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CompTIA · Free, ad-free audio course

CompTIA Network+

A practical audio route through network concepts, operations, troubleshooting, and the security foundations that support modern infrastructure.

Listen to the complete course Browse 184 lessons

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Study with the audio course, then reinforce it in print.

The study guide helps you organize and revisit the material. The flashcards book adds active recall and rapid review across the course objectives.

Complete Lesson Directory

Choose the exact subject you want to study.

Search by topic or narrow the directory by exam domain. Courses with multiple editions are organized below so every season remains easy to find. Each lesson includes its own audio player, full description, transcript when available, and previous-or-next navigation.

184 lessons available

S01E01Transcript

Getting Started

Welcome to the Network Plus Audio Course

This episode introduces the Network Plus Audio Course as your structured companion for mastering networking concepts and preparing for the CompTIA exam.…

Transcript availableJuly 20, 2025
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S01E03Transcript

Getting Started

What to Expect on the Network Plus Exam

This episode provides a detailed overview of the structure and requirements of the CompTIA Network Plus exam. It explains the number and types of questions, the allotted time, scoring scale, and passing criteria.…

Transcript availableJuly 20, 2025
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S01E04Transcript

Getting Started

How to Think Like a Test Writer — The Anatomy of a CompTIA Question

This episode focuses on breaking down the structure of CompTIA questions and learning how to analyze them effectively. It explains the key parts of a question, including the stem, the correct answer, and distractors designed to appear plausible but incorrect.…

Transcript availableJuly 20, 2025
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S01E05Transcript

Getting Started

Study Smarter — Building a Bulletproof Learning Plan

This episode emphasizes the importance of designing a structured study plan that aligns with the Network Plus exam objectives. It explains how to divide the domains into manageable sections, schedule regular sessions, and track progress against clear milestones.…

Transcript availableJuly 20, 2025
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S01E06Transcript

Getting Started

Labs and Simulations — Learning by Doing

This episode highlights the importance of practical, hands-on learning when preparing for the Network Plus exam.…

Transcript availableJuly 20, 2025
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S01E07Transcript

Getting Started

Exam Day Strategy — From Sleep to Scantron

This episode focuses on preparing yourself for exam day to ensure you perform at your best. It discusses the importance of getting adequate rest, managing stress, and arriving early to the testing center or setting up a distraction-free environment for online proctoring.…

Transcript availableJuly 20, 2025
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S01E08Transcript

Getting Started

Glossary Essentials — Core Networking Terms

This episode introduces a set of foundational networking terms that are essential for both the exam and real-world understanding.…

Transcript availableJuly 20, 2025
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S01E11Transcript

Domain 1 · Networking Concepts

Welcome to Domain 1 — Networking Fundamentals

This episode introduces Domain 1 of the Network Plus exam, which focuses on networking fundamentals. It explains that this domain lays the groundwork for nearly every other topic you will encounter, covering the core models, architectures, and technologies that make networks function.…

Transcript availableJuly 20, 2025
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S01E12Transcript

Domain 1 · Networking Concepts

What Is the OSI Model and Why It Still Matters

This episode explores the Open Systems Interconnection (OSI) model, a seven-layer framework that standardizes how networks operate and communicate. Each layer is introduced with its role, from the physical transmission of bits to the application-level interfaces users interact with.…

Transcript availableJuly 20, 2025
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S01E13Transcript

Domain 1 · Networking Concepts

OSI Layer 1 and Layer 2 — Physical and Data Link Layers

This episode examines the first two layers of the OSI model: the Physical Layer and the Data Link Layer. The Physical Layer is introduced as the foundation, responsible for transmitting raw bits across cables, fiber, or wireless signals.…

Transcript availableJuly 20, 2025
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S01E14Transcript

Domain 1 · Networking Concepts

OSI Layer 3 — The Network Layer

This episode focuses on the Network Layer of the OSI model, where logical addressing and routing decisions occur. It explains how Internet Protocol (IP) operates at this layer, enabling data to move between networks rather than just between directly connected devices.…

Transcript availableJuly 20, 2025
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S01E15Transcript

Domain 1 · Networking Concepts

OSI Layer 4 — The Transport Layer

This episode examines the Transport Layer, which manages reliable communication between devices through segmentation, error checking, and flow control.…

Transcript availableJuly 20, 2025
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S01E16Transcript

Domain 1 · Networking Concepts

OSI Upper Layers and Data Encapsulation (Layers 5–7 and Encapsulation)

This episode explores the upper layers of the OSI model: Session, Presentation, and Application. These layers manage sessions between devices, format and translate data, and provide interfaces that allow end users and applications to interact with the network.…

Transcript availableJuly 20, 2025
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S01E17Transcript

Domain 1 · Networking Concepts

Inside the Packet — Headers and Payloads

This episode examines the structure of a network packet, focusing on how headers and payloads define communication. It explains that headers contain addressing and control information, while payloads carry the actual data being transmitted.…

Transcript availableJuly 20, 2025
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S01E18Transcript

Domain 1 · Networking Concepts

MTU and Fragmentation — Why Packet Size Matters

This episode explains the role of Maximum Transmission Unit (MTU) and how packet fragmentation occurs when data exceeds size limits.…

Transcript availableJuly 20, 2025
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S01E19Transcript

Domain 1 · Networking Concepts

Network Topologies — What Connects What

This episode introduces the major types of network topologies, including bus, star, ring, mesh, and hybrid. It explains how each topology defines the physical or logical arrangement of devices and how these designs affect performance, fault tolerance, and scalability.…

Transcript availableJuly 20, 2025
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S01E20

Domain 1 · Networking Concepts

Peer-to-Peer vs. Client-Server Architectures

This episode explains the difference between peer-to-peer and client-server network architectures. In a peer-to-peer model, devices communicate directly, sharing resources without centralized control.…

July 20, 2025
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S01E21Transcript

Domain 1 · Networking Concepts

LAN, MAN, and WAN — The Scope of Networks

This episode introduces the three primary categories of network scope: Local Area Networks (LANs), Metropolitan Area Networks (MANs), and Wide Area Networks (WANs).…

Transcript availableJuly 20, 2025
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S01E23Transcript

Domain 1 · Networking Concepts

Storage and Virtual Networking

This episode focuses on storage networking and virtual networking, two areas that reflect modern infrastructure trends. Storage networking includes technologies like Network Attached Storage (NAS) and Storage Area Networks (SANs), which allow centralized management of data resources.…

Transcript availableJuly 20, 2025
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S01E24Transcript

Domain 1 · Networking Concepts

Modern WAN Technologies — MPLS and mGRE

This episode introduces two important WAN technologies: Multiprotocol Label Switching (MPLS) and multipoint Generic Routing Encapsulation (mGRE).…

Transcript availableJuly 20, 2025
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S01E26Transcript

Domain 1 · Networking Concepts

Virtual Network Interfaces and Components

This episode explores virtual network interfaces and components, which allow logical networking functions to operate independently of physical hardware.…

Transcript availableJuly 20, 2025
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S01E27Transcript

Domain 1 · Networking Concepts

Network Function Virtualization (NFV) in Practice

This episode introduces Network Function Virtualization (NFV), which replaces traditional hardware-based appliances like routers, load balancers, and firewalls with software-based equivalents.…

Transcript availableJuly 20, 2025
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S01E28Transcript

Domain 1 · Networking Concepts

Network Provider Links — From Satellite to Metro Optical

This episode explains the variety of network provider links that organizations use to connect geographically dispersed sites. It introduces technologies such as satellite communications, microwave, DSL, cable, leased lines, and metro optical services.…

Transcript availableJuly 20, 2025
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S01E29Transcript

Domain 1 · Networking Concepts

Introduction to Transmission Media and Copper Cabling

This episode introduces transmission media, focusing on copper cabling as one of the most widely used network media types. It explains how copper cables transmit electrical signals and introduces the basic categories of twisted pair cabling.…

Transcript availableJuly 20, 2025
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S01E30Transcript

Domain 1 · Networking Concepts

Twisted Pair Cabling Standards — Cat 5, 5e, 6, 6a, and Beyond

This episode examines twisted pair cabling standards, including Category 5, 5e, 6, 6a, and higher classifications. Each standard is defined by its maximum transmission speed, frequency, and distance limitations.…

Transcript availableJuly 20, 2025
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S01E31Transcript

Domain 1 · Networking Concepts

Coaxial and Twinaxial Cables

This episode covers coaxial and twinaxial cables, two copper-based media types that still appear in both exam questions and some practical environments.…

Transcript availableJuly 20, 2025
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S01E32Transcript

Domain 1 · Networking Concepts

Termination Standards — TIA/EIA-568A vs. 568B

This episode introduces the TIA/EIA-568A and TIA/EIA-568B cabling standards, which define how twisted pair cables are terminated for reliable network communication.…

Transcript availableJuly 20, 2025
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S01E33Transcript

Domain 1 · Networking Concepts

Understanding Fiber Optic Cabling

This episode introduces fiber optic cabling, which transmits data as pulses of light rather than electrical signals.…

Transcript availableJuly 20, 2025
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S01E34Transcript

Domain 1 · Networking Concepts

Single-Mode vs. Multimode Fiber

This episode explains the differences between single-mode and multimode fiber, two types of optical cabling defined by how light travels through the core. Single-mode fiber, with its narrow core, supports long-distance, high-speed communication using laser light sources.…

Transcript availableJuly 20, 2025
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S01E35Transcript

Domain 1 · Networking Concepts

Common Fiber and Copper Connector Types

This episode focuses on the various connector types used with fiber and copper cabling. For fiber, common connectors include ST, SC, LC, and MTP/MPO, each with specific use cases and physical characteristics.…

Transcript availableJuly 20, 2025
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S01E36Transcript

Domain 1 · Networking Concepts

Transceiver Modules — Plugging Light into Switches

This episode introduces transceiver modules, which enable switches, routers, and other network devices to interface with fiber or copper cabling. Standards such as SFP, SFP+, QSFP, and GBIC are explained, including their roles in supporting different speeds and media types.…

Transcript availableJuly 20, 2025
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S01E37Transcript

Domain 1 · Networking Concepts

Media Converters — Bridging the Gap

This episode explains media converters, devices that enable communication between different types of physical cabling, such as copper to fiber or single-mode to multimode fiber.…

Transcript availableJuly 20, 2025
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S01E38Transcript

Domain 1 · Networking Concepts

Cable Management, Panels, and Punchdowns

This episode highlights the importance of proper cable management, distribution panels, and punchdown blocks in maintaining organized, functional networks.…

Transcript availableJuly 20, 2025
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S01E39Transcript

Domain 1 · Networking Concepts

Ethernet Standards over Copper

This episode explains the Ethernet standards that operate over copper cabling, from early Fast Ethernet to Gigabit and 10 Gigabit Ethernet.…

Transcript availableJuly 20, 2025
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S01E40Transcript

Domain 1 · Networking Concepts

Ethernet Standards over Fiber and Multiplexing

This episode introduces Ethernet standards over fiber optic cabling, which enable high-speed communication across longer distances than copper. Standards such as 1000BASE-LX, 10GBASE-SR, and 40GBASE-LR are explained in terms of wavelength, range, and use case.…

Transcript availableJuly 20, 2025
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S01E41Transcript

Domain 1 · Networking Concepts

Introduction to IP Addressing and Subnetting

This episode introduces the fundamentals of IP addressing and subnetting, two of the most critical skills for the Network Plus exam. It explains how IP addresses identify hosts on a network and how subnetting divides larger address spaces into smaller, manageable segments.…

Transcript availableJuly 20, 2025
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S01E43Transcript

Domain 1 · Networking Concepts

NAT — Hiding Networks Behind a Single IP

This episode introduces Network Address Translation (NAT), a process that allows multiple internal devices to share a single public IP address.…

Transcript availableJuly 20, 2025
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S01E44Transcript

Domain 1 · Networking Concepts

PAT — Port Address Translation and Overload NAT

This episode focuses on Port Address Translation (PAT), often called overload NAT, which extends NAT by allowing multiple devices to share one public IP using different port numbers.…

Transcript availableJuly 20, 2025
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S01E45Transcript

Domain 1 · Networking Concepts

APIPA and EUI-64 — Self-Assigned and Extended Addressing

This episode introduces Automatic Private IP Addressing (APIPA) and EUI-64 addressing. APIPA is a fallback mechanism in IPv4 where devices assign themselves an address in the 169.254.0.0/16 range when DHCP is unavailable.…

Transcript availableJuly 20, 2025
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S01E46Transcript

Domain 1 · Networking Concepts

IPv4 vs. IPv6 — A Structural Comparison

This episode compares IPv4 and IPv6, highlighting their structural differences and why both remain important on the exam and in practice. IPv4 uses 32-bit addressing, expressed in dotted decimal notation, and supports about 4.3 billion addresses.…

Transcript availableJuly 20, 2025
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S01E47Transcript

Domain 1 · Networking Concepts

IPv6 Address Types — Know the Modes of Delivery

This episode introduces the different types of IPv6 addresses, which define how communication occurs within an IPv6-enabled network.…

Transcript availableJuly 20, 2025
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S01E48Transcript

Domain 1 · Networking Concepts

The Default Gateway — Directing Traffic Outward

This episode explains the role of the default gateway, which directs traffic from a local network to destinations outside its subnet. Without a properly configured gateway, devices can communicate internally but cannot reach external networks or the Internet.…

Transcript availableJuly 20, 2025
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S01E49Transcript

Domain 1 · Networking Concepts

Understanding Classful IPv4 Addressing

This episode reviews classful IPv4 addressing, a historical system that divided addresses into five classes: A, B, C, D, and E. Each class had predefined ranges and default subnet masks, such as Class A with 255.0.0.0 and Class C with 255.255.255.0.…

Transcript availableJuly 20, 2025
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S01E50Transcript

Domain 1 · Networking Concepts

Classless Addressing and VLSM

This episode introduces classless addressing and Variable Length Subnet Masking (VLSM), which replaced the limitations of classful addressing. Classless addressing allows networks to use subnet masks of any length, providing more efficient allocation of address space.…

Transcript availableJuly 20, 2025
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S01E51Transcript

Domain 1 · Networking Concepts

CIDR Notation — Reading and Writing Network Ranges

This episode introduces Classless Inter-Domain Routing (CIDR) notation, the shorthand system used to represent IP address ranges with a suffix indicating the subnet mask.…

Transcript availableJuly 20, 2025
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S01E52Transcript

Domain 1 · Networking Concepts

IPv4 Subnetting — The Process Step by Step

This episode walks through the process of IPv4 subnetting, a skill that requires practice and speed for the exam. It explains how to take a given network address and divide it into smaller subnets by borrowing bits from the host portion.…

Transcript availableJuly 20, 2025
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S01E53Transcript

Domain 1 · Networking Concepts

IPv6 Subnetting and Address Planning

This episode covers IPv6 subnetting, which operates differently from IPv4 due to its larger 128-bit address space. Instead of conserving addresses, IPv6 subnetting focuses on structured planning and organization.…

Transcript availableJuly 20, 2025
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S01E54Transcript

Domain 1 · Networking Concepts

IPv6 Transition Technologies

This episode introduces IPv6 transition technologies, which allow networks to support both IPv4 and IPv6 during the migration period. Methods such as dual-stack, tunneling, and translation are explained, each with unique advantages and limitations.…

Transcript availableJuly 20, 2025
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S01E55Transcript

Domain 1 · Networking Concepts

Virtual IPs and Subinterfaces — Logical Address Extensions

This episode explains the concepts of virtual IPs and subinterfaces, which extend logical addressing capabilities. A virtual IP is an address shared among devices, often used for redundancy and load balancing.…

Transcript availableJuly 20, 2025
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S01E56Transcript

Domain 1 · Networking Concepts

Protocols for File Transfer — FTP, SFTP, TFTP, and More

This episode introduces the protocols commonly used for transferring files across networks. File Transfer Protocol (FTP) is explained as a traditional method operating over TCP, often requiring additional security measures.…

Transcript availableJuly 20, 2025
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S01E57Transcript

Domain 1 · Networking Concepts

Protocols for Remote Access — SSH, Telnet, and RDP

This episode covers remote access protocols, which enable administrators to manage systems from a distance. Telnet, one of the oldest methods, is introduced as insecure due to its plaintext transmission of credentials and data.…

Transcript availableJuly 20, 2025
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S01E58Transcript

Domain 1 · Networking Concepts

Email Protocols — SMTP, POP3, IMAP, and Their Secure Variants

This episode introduces the protocols that enable email delivery and retrieval. Simple Mail Transfer Protocol (SMTP) is used to send messages, while Post Office Protocol version 3 (POP3) and Internet Message Access Protocol (IMAP) allow users to retrieve and manage emails.…

Transcript availableJuly 20, 2025
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S01E59Transcript

Domain 1 · Networking Concepts

Web and Directory Services — HTTP, HTTPS, LDAP, LDAPS

This episode covers web and directory service protocols, which form the backbone of modern communication and identity management. Hypertext Transfer Protocol (HTTP) provides the foundation for web traffic, while HTTPS secures that traffic using SSL/TLS encryption.…

Transcript availableJuly 20, 2025
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S01E60Transcript

Domain 1 · Networking Concepts

Network Services — DNS, DHCP, NTP, Syslog

This episode introduces four essential network services: Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), Network Time Protocol (NTP), and Syslog.…

Transcript availableJuly 20, 2025
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S01E61Transcript

Domain 1 · Networking Concepts

File and Print Services — SMB and SQL Protocols

This episode introduces file and print services, focusing on the Server Message Block (SMB) protocol and the role of SQL-based services in network environments.…

Transcript availableJuly 20, 2025
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S01E62Transcript

Domain 1 · Networking Concepts

SNMP and Network Management Traffic

This episode covers Simple Network Management Protocol (SNMP), which enables administrators to monitor and manage network devices. SNMP uses a manager–agent model, where agents on devices report statistics such as interface status or CPU usage to a central manager.…

Transcript availableJuly 20, 2025
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S01E63Transcript

Domain 1 · Networking Concepts

SIP and VoIP Protocols

This episode introduces Session Initiation Protocol (SIP) and other Voice over IP (VoIP) protocols that support modern telephony systems. SIP establishes, manages, and terminates calls, while protocols such as RTP (Real-Time Transport Protocol) handle the actual media streams.…

Transcript availableJuly 20, 2025
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S01E64Transcript

Domain 1 · Networking Concepts

ICMP — The Network's Messaging System

This episode examines the Internet Control Message Protocol (ICMP), which communicates error messages and diagnostic information between devices.…

Transcript availableJuly 20, 2025
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S01E65Transcript

Domain 1 · Networking Concepts

TCP and UDP — The Transport Layer's Two Engines

This episode focuses on Transmission Control Protocol (TCP) and User Datagram Protocol (UDP), the two primary protocols at the transport layer. TCP is connection-oriented, ensuring reliable delivery with acknowledgments, retransmissions, and sequencing.…

Transcript availableJuly 20, 2025
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S01E66Transcript

Domain 1 · Networking Concepts

GRE and IPsec — Tunneling and Secure Transport

This episode introduces two important tunneling and transport technologies: Generic Routing Encapsulation (GRE) and Internet Protocol Security (IPsec). GRE provides a simple way to encapsulate packets within other packets, allowing them to traverse incompatible networks.…

Transcript availableJuly 20, 2025
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S01E67Transcript

Domain 1 · Networking Concepts

Connection-Oriented vs. Connectionless — Making Sense of Transport Styles

This episode explains the difference between connection-oriented and connectionless communication, two fundamental transport styles. Connection-oriented communication, as seen with TCP, establishes a session, ensures data arrives in order, and retransmits lost packets.…

Transcript availableJuly 20, 2025
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S01E68Transcript

Domain 1 · Networking Concepts

DHCP Concepts and Configuration Essentials (Scope, Reservations, Relay)

This episode explores Dynamic Host Configuration Protocol (DHCP), which automatically assigns IP addresses and related configuration details to devices. Concepts such as DHCP scopes, reservations, and relay agents are introduced.…

Transcript availableJuly 20, 2025
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S01E69Transcript

Domain 1 · Networking Concepts

DNS Essentials — Records, Resolution, and Queries

This episode examines the Domain Name System (DNS), which translates hostnames into IP addresses. It introduces common record types such as A, AAAA, MX, and CNAME, as well as the process of recursive and iterative resolution.…

Transcript availableJuly 20, 2025
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S01E70Transcript

Domain 1 · Networking Concepts

Network Time Protocol (NTP) — Keeping Clocks in Sync

This episode explains Network Time Protocol (NTP), which synchronizes clocks across devices to ensure accurate timestamps and coordinated operations. Accurate timekeeping is essential for authentication, logging, and troubleshooting, making NTP an important exam subject.…

Transcript availableJuly 20, 2025
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S01E72Transcript

Domain 1 · Networking Concepts

Software-Defined Networking (SDN) Fundamentals

This episode explains Software-Defined Networking (SDN), which separates the control plane from the data plane to provide centralized management and programmability.…

Transcript availableJuly 20, 2025
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S01E73Transcript

Domain 1 · Networking Concepts

SDN in Operation — The Management Plane Explained

This episode explores how SDN operates in practice, focusing on the management plane. The management plane is where administrators define network policies, monitor performance, and control behavior through the SDN controller.…

Transcript availableJuly 20, 2025
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S01E74Transcript

Domain 1 · Networking Concepts

Spine-and-Leaf Architecture — Flattening the Network

This episode introduces spine-and-leaf architecture, a design commonly used in modern data centers. In this model, all leaf switches connect to every spine switch, creating a consistent and predictable path between devices.…

Transcript availableJuly 20, 2025
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S01E76Transcript

Domain 1 · Networking Concepts

Location Models — Branch Office, On-Prem, and Colocation

This episode introduces network location models, focusing on branch office, on-premises, and colocation deployments. A branch office model connects smaller remote offices back to a central corporate network, often through VPNs or leased lines.…

Transcript availableJuly 20, 2025
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S01E80Transcript

Domain 1 · Networking Concepts

Infrastructure as Code — Automating the Cloud

This episode introduces Infrastructure as Code (IaC), the practice of managing and provisioning infrastructure through machine-readable configuration files rather than manual processes.…

Transcript availableJuly 20, 2025
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S01E81Transcript

Domain 1 · Networking Concepts

Cloud Connectivity — VPN and Private Links

This episode explains how organizations connect securely to cloud environments using Virtual Private Networks (VPNs) and private links. VPNs extend encrypted tunnels over the Internet, providing secure access to cloud resources.…

Transcript availableJuly 20, 2025
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S01E82Transcript

Domain 1 · Networking Concepts

Multitenancy — Sharing the Cloud Securely

This episode introduces the concept of multitenancy, where multiple customers share the same cloud infrastructure while maintaining logical separation. Hypervisors, containers, and virtual networks enforce isolation between tenants, ensuring data and resources remain secure.…

Transcript availableJuly 20, 2025
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S01E83Transcript

Domain 1 · Networking Concepts

Elasticity and Scalability — Growing on Demand

This episode explores elasticity and scalability, two defining characteristics of cloud computing. Elasticity refers to the ability to automatically expand or contract resources based on demand, while scalability describes the capacity to grow workloads efficiently over time.…

Transcript availableJuly 20, 2025
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S01E84Transcript

Domain 1 · Networking Concepts

Security Implications of Cloud Computing

This episode addresses the security implications of cloud computing, focusing on how responsibilities are shared between provider and customer. Topics include data protection, identity and access management, and securing APIs used for cloud integration.…

Transcript availableJuly 20, 2025
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S01E85Transcript

Domain 2 · Network Implementation

Welcome to Domain 2 — Network Implementations

This episode introduces Domain 2 of the Network Plus exam, which covers network implementations. While Domain 1 focused on fundamentals, Domain 2 builds on that knowledge by examining how devices, architectures, and configurations are deployed in practice.…

Transcript availableJuly 20, 2025
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S01E87Transcript

Domain 2 · Network Implementation

Layer 3 Switches — When a Switch Becomes a Router

This episode explains Layer 3 switches, which combine the high-speed switching of Layer 2 with the routing capabilities of Layer 3. These devices can forward packets based on IP addresses, supporting inter-VLAN routing and more advanced network segmentation.…

Transcript availableJuly 20, 2025
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S01E88Transcript

Domain 2 · Network Implementation

Routers — Path Decision Makers

This episode focuses on routers, devices that operate at the Network Layer and make path decisions based on logical addressing. Routers examine destination IP addresses, consult routing tables, and forward packets toward their destination.…

Transcript availableJuly 20, 2025
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S01E89Transcript

Domain 2 · Network Implementation

Hubs and Bridges — Legacy Devices Explained

This episode introduces hubs and bridges, legacy devices that laid the foundation for modern switching. Hubs operate at Layer 1, repeating signals to all ports without intelligence, which creates collision domains and inefficient traffic flow.…

Transcript availableJuly 20, 2025
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S01E90Transcript

Domain 2 · Network Implementation

Access Points and Wireless LAN Controllers

This episode explains the role of wireless access points (APs) and wireless LAN controllers (WLCs). Access points provide wireless connectivity to client devices, bridging them into wired networks.…

Transcript availableJuly 20, 2025
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S01E91Transcript

Domain 2 · Network Implementation

Load Balancers — Sharing the Traffic Load

This episode introduces load balancers, devices or software that distribute network or application traffic across multiple servers. By balancing requests, they prevent single systems from becoming overloaded and improve availability and performance.…

Transcript availableJuly 20, 2025
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S01E92Transcript

Domain 2 · Network Implementation

Proxies and VPN Gateways — Secure Remote Access

This episode explains the role of proxies and VPN gateways in securing and managing remote access. Proxies act as intermediaries between clients and external servers, often providing content filtering, caching, or anonymization.…

Transcript availableJuly 20, 2025
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S01E93Transcript

Domain 2 · Network Implementation

Modems, Media Converters, and Repeaters

This episode covers modems, media converters, and repeaters, three devices that operate primarily at the physical layer.…

Transcript availableJuly 20, 2025
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S01E94Transcript

Domain 2 · Network Implementation

Voice Gateways and VoIP Translation

This episode introduces voice gateways, devices that translate between traditional telephony systems and modern Voice over IP (VoIP).…

Transcript availableJuly 20, 2025
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S01E95Transcript

Domain 2 · Network Implementation

IPS and IDS Devices — Detecting and Stopping Attacks

This episode explains Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS), which monitor network traffic for signs of malicious activity. IDS devices detect and alert administrators to suspicious patterns, while IPS devices actively block or drop harmful traffic.…

Transcript availableJuly 20, 2025
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S01E96Transcript

Domain 2 · Network Implementation

Firewalls — Stateful Inspection and Access Control

This episode introduces firewalls, which enforce security policies by controlling traffic entering or leaving a network. It explains the difference between packet-filtering, stateful inspection, and next-generation firewalls.…

Transcript availableJuly 20, 2025
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S01E97Transcript

Domain 2 · Network Implementation

Networked Devices — VoIP Phones, Printers, and Controls

This episode explores networked devices beyond standard workstations and servers. VoIP phones, network printers, and control systems are introduced as endpoints that rely on network connectivity for proper function.…

Transcript availableJuly 20, 2025
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S01E98Transcript

Domain 2 · Network Implementation

IoT and SCADA Systems — Small Devices, Big Impacts

This episode examines Internet of Things (IoT) and Supervisory Control and Data Acquisition (SCADA) systems. IoT devices include sensors, cameras, and smart appliances that connect to networks, often with minimal security.…

Transcript availableJuly 20, 2025
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S01E99Transcript

Domain 2 · Network Implementation

Introduction to Routing — What It Does and Why It Matters

This episode introduces routing, the process of directing packets between networks based on destination IP addresses. Routers use routing tables to determine the best path, ensuring data reaches the correct subnet or external destination.…

Transcript availableJuly 20, 2025
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S01E100Transcript

Domain 2 · Network Implementation

Static Routing and Administrative Distance

This episode focuses on static routing, where administrators manually configure routes, and the concept of administrative distance, which determines the trustworthiness of routes when multiple options exist.…

Transcript availableJuly 20, 2025
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S01E101

Domain 2 · Network Implementation

Dynamic Routing Protocols — Distance Vector and RIP

This episode introduces dynamic routing protocols, focusing on distance vector protocols such as Routing Information Protocol (RIP). Distance vector protocols determine the best path based on hop count, periodically sharing routing tables with neighbors.…

July 20, 2025
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S01E102Transcript

Domain 2 · Network Implementation

Link-State and Hybrid Routing Protocols — OSPF, EIGRP, and BGP

This episode examines link-state and hybrid routing protocols, including Open Shortest Path First (OSPF), Enhanced Interior Gateway Routing Protocol (EIGRP), and Border Gateway Protocol (BGP).…

Transcript availableJuly 20, 2025
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S01E103Transcript

Domain 2 · Network Implementation

Bandwidth Management — Shaping and Prioritizing Traffic

This episode explores bandwidth management techniques, including traffic shaping and prioritization. Shaping controls the flow of traffic to match available bandwidth, while prioritization ensures critical applications such as voice or video receive preference.…

Transcript availableJuly 20, 2025
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S01E104Transcript

Domain 2 · Network Implementation

VLANs — Segmenting the Network with Data and Voice

This episode introduces Virtual Local Area Networks (VLANs), which logically segment networks into separate broadcast domains on the same physical infrastructure. VLANs improve security, performance, and manageability by separating traffic such as user data and voice communications.…

Transcript availableJuly 20, 2025
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S01E105Transcript

Domain 2 · Network Implementation

VLANs — Segmenting the Network with Data and Voice

This episode introduces Virtual Local Area Networks (VLANs), which logically segment networks into separate broadcast domains on the same physical infrastructure. VLANs improve security, performance, and manageability by separating traffic such as user data and voice communications.…

Transcript availableJuly 20, 2025
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S01E106Transcript

Domain 2 · Network Implementation

Port Tagging and 802.1Q — Trunks and VLAN IDs

This episode explains port tagging and the IEEE 802.1Q standard, which enables VLAN traffic to travel across trunk links between switches. Tagging adds a VLAN identifier to frames so multiple VLANs can share the same physical connection while remaining logically separated.…

Transcript availableJuly 20, 2025
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S01E107Transcript

Domain 2 · Network Implementation

Port Aggregation with LACP

This episode introduces port aggregation, which combines multiple physical links into a single logical connection to increase bandwidth and provide redundancy.…

Transcript availableJuly 20, 2025
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S01E108Transcript

Domain 2 · Network Implementation

Port Configuration and Mirroring Essentials

Switch ports are the front line of network configuration and monitoring, and this episode walks through the most essential port settings. You'll learn how to assign ports to VLANs, configure speed and duplex, enable or disable ports, and label interfaces for better documentation.…

Transcript availableJuly 20, 2025
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S01E109Transcript

Domain 2 · Network Implementation

Port Security — Limiting Access at the Switch Edge

Port security helps prevent unauthorized devices from connecting to your network by enforcing MAC address restrictions at the switch port level.…

Transcript availableJuly 20, 2025
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S01E110Transcript

Domain 2 · Network Implementation

Jumbo Frames and Auto-MDI-X — Optimizing Transmission

Optimizing data transmission isn’t just about bandwidth—it also involves tuning frame size and port behavior. This episode explores jumbo frames, which are Ethernet frames larger than the standard 1500 bytes.…

Transcript availableJuly 20, 2025
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S01E111Transcript

Domain 2 · Network Implementation

MAC Address Tables — How Switches Learn

Switches rely on MAC address tables to decide where to forward frames, and this episode walks you through exactly how these tables are built and maintained. You'll learn how switches learn the source MAC address of each incoming frame and associate it with the port that received it.…

Transcript availableJuly 20, 2025
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S01E112Transcript

Domain 2 · Network Implementation

Power over Ethernet (PoE and PoE+)

Power over Ethernet (PoE) allows devices like access points, VoIP phones, and security cameras to receive power and data over a single Ethernet cable.…

Transcript availableJuly 20, 2025
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S01E113

Domain 2 · Network Implementation

Spanning Tree Protocol — Loop Prevention for Switches

Spanning Tree Protocol (STP) is critical for preventing Layer 2 loops that can crash entire networks. In this episode, we explain how STP operates by detecting redundant paths and placing specific ports in a blocking state.…

July 20, 2025
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S01E114Transcript

Domain 2 · Network Implementation

CSMA/CD, ARP, and Neighbor Discovery

Legacy and modern protocols alike underpin communication within local networks, and this episode brings together three foundational ones: CSMA/CD, ARP, and Neighbor Discovery.…

Transcript availableJuly 20, 2025
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S01E115Transcript

Domain 2 · Network Implementation

802.11 Wireless Standards — From a to ax

Wireless networking continues to evolve rapidly, and understanding the 802.11 family of standards is essential for modern network support. In this episode, we walk through the progression from 802.11a and 802.11b all the way to today’s high-speed 802.11ax (Wi-Fi 6).…

Transcript availableJuly 20, 2025
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S01E117Transcript

Domain 2 · Network Implementation

Wi-Fi Topologies, SSIDs, and Antenna Types

Wireless networks can be built in several topologies, and choosing the right one affects everything from coverage to scalability.…

Transcript availableJuly 20, 2025
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S01E118Transcript

Domain 2 · Network Implementation

Securing Wi-Fi — Encryption Standards and Enterprise Practices

Wireless networks require more than just a strong signal—they also demand strong security. In this episode, we explore the evolution of wireless encryption, from outdated protocols like WEP to modern standards like WPA2 and WPA3.…

Transcript availableJuly 20, 2025
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S01E119Transcript

Domain 2 · Network Implementation

Cellular Technologies — Connecting Beyond Wi-Fi

Cellular networks offer wide-area coverage and are vital for connecting mobile devices and remote locations to the internet. In this episode, we walk through the evolution of cellular technology from 3G to 4G LTE and the newest 5G deployments.…

Transcript availableJuly 20, 2025
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S01E120Transcript

Domain 2 · Network Implementation

MIMO and MU-MIMO — Multiplying Wireless Performance

Multiple-Input, Multiple-Output (MIMO) is one of the most powerful features in modern wireless communication, dramatically increasing speed and efficiency.…

Transcript availableJuly 20, 2025
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S01E121Transcript

Domain 3 · Network Operations

Welcome to Domain 3 — Network Operations

In Domain 3, we shift focus from implementation to operation, diving into what it takes to maintain, monitor, and document a functional network.…

Transcript availableJuly 20, 2025
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S01E122Transcript

Domain 3 · Network Operations

Performance Metrics, Sensors, and SNMP Basics

Monitoring network health begins with knowing what to measure—and how. In this episode, we cover the essential performance metrics that indicate how well a network is functioning, including bandwidth usage, latency, jitter, packet loss, and error rates.…

Transcript availableJuly 20, 2025
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S01E124Transcript

Domain 3 · Network Operations

Interface Errors and Environmental Factors — Early Detection

Interface errors can be the first signs of deeper problems, and in this episode, we cover the most common indicators that a link is failing. You’ll learn how to recognize and interpret error messages such as input/output drops, late collisions, CRC errors, and alignment problems.…

Transcript availableJuly 20, 2025
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S01E125Transcript

Domain 3 · Network Operations

Baselines and NetFlow — Measuring Network Health

A baseline is a snapshot of normal network behavior, and it’s one of the most powerful tools for detecting anomalies. This episode explores how to create, maintain, and use network baselines effectively.…

Transcript availableJuly 20, 2025
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S01E126Transcript

Domain 3 · Network Operations

Change Management and System Life Cycle

Change is inevitable—but unplanned change can break your network. This episode walks you through the change management process, including how to propose, review, approve, and document network changes.…

Transcript availableJuly 20, 2025
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S01E127Transcript

Domain 3 · Network Operations

Incident Response, Disaster Recovery, and Business Continuity

When the worst happens, a well-prepared team can make all the difference. In this episode, we examine the roles of incident response, disaster recovery, and business continuity planning.…

Transcript availableJuly 20, 2025
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S01E128Transcript

Domain 3 · Network Operations

Standard Operating Procedures (SOPs)

Standard Operating Procedures are the rulebooks of a stable network environment. In this episode, we explain why SOPs matter, how they are developed, and what elements make them effective.…

Transcript availableJuly 20, 2025
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S01E129Transcript

Domain 3 · Network Operations

Security Hardening Policies — Passwords, DLP, and Device Access

Security begins with hardening the network against misuse and unauthorized access. In this episode, we review core hardening policies that every network should implement, starting with password standards, login lockouts, and multi-factor authentication.…

Transcript availableJuly 20, 2025
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S01E130Transcript

Domain 3 · Network Operations

Network Documentation — Physical, Logical, and Audit Reports

A well-documented network is easier to maintain, troubleshoot, and scale. In this episode, we explore the different types of network documentation, including physical topology diagrams, logical flowcharts, and wiring schematics.…

Transcript availableJuly 20, 2025
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S01E131Transcript

Domain 3 · Network Operations

Business Agreements — NDAs, SLAs, MOUs

Networks don’t operate in a vacuum—they’re governed by agreements that define responsibilities, expectations, and legal protections.…

Transcript availableJuly 20, 2025
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S01E132Transcript

Domain 3 · Network Operations

Load Balancing, Multipathing, and NIC Teaming

High-availability and performance optimization often rely on distributing traffic across multiple paths or interfaces. This episode breaks down three related technologies: load balancing, multipathing, and NIC teaming.…

Transcript availableJuly 20, 2025
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S01E133Transcript

Domain 3 · Network Operations

Hardware Redundancy — Routers, Switches, and Facility Infrastructure

Hardware failures are inevitable—but outages are not, if redundancy is properly built into your network. In this episode, we focus on how to create fault-tolerant infrastructure through redundant routers, switches, and physical links.…

Transcript availableJuly 20, 2025
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S01E135Transcript

Domain 3 · Network Operations

Diverse Paths and Internet Redundancy — Ensuring Availability

Redundancy isn’t just about hardware—it’s also about network paths. In this episode, we explore how having multiple physical and logical paths ensures internet and WAN availability.…

Transcript availableJuly 20, 2025
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S01E136Transcript

Domain 3 · Network Operations

VRRP and FHRP — Virtual Router Redundancy

Routers are essential gateways, and if one fails, the network can grind to a halt—unless redundancy is in place.…

Transcript availableJuly 20, 2025
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S01E137Transcript

Domain 3 · Network Operations

Backup and Restore for Network Devices

Configuration data is as critical as hardware—and losing it can lead to hours of downtime. In this episode, we walk through backup and restore procedures for routers, switches, firewalls, and other network appliances.…

Transcript availableJuly 20, 2025
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S01E138Transcript

Domain 4 · Network Security

Welcome to Domain 4 — Network Security

Domain 4 marks a transition from availability and performance into security—protecting the integrity and confidentiality of the network.…

Transcript availableJuly 20, 2025
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S01E139Transcript

Domain 4 · Network Security

The CIA Triad and Types of Network Threats

Every security strategy begins with the CIA Triad—Confidentiality, Integrity, and Availability. In this episode, we explore how these three principles guide all security policies and how various threats can undermine each one.…

Transcript availableJuly 20, 2025
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S01E140Transcript

Domain 4 · Network Security

Episode 140 — Vulnerabilities, Exploits, and Exposure Concepts

This episode dives into the foundational security concepts of vulnerabilities, exploits, and exposures—terms that appear throughout the Network Plus exam and underpin much of what cybersecurity involves.…

Transcript availableJuly 20, 2025
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S01E141Transcript

Domain 4 · Network Security

Principle of Least Privilege and RBAC

Security in networking isn’t just about blocking attacks—it’s about minimizing exposure by limiting what users and systems can access.…

Transcript availableJuly 20, 2025
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S01E142Transcript

Domain 4 · Network Security

Zero Trust and Defense in Depth Models

Zero Trust networking flips the traditional perimeter-based security model on its head. In this episode, we unpack the Zero Trust principle of “never trust, always verify,” and explore how it applies to network design.…

Transcript availableJuly 20, 2025
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S01E143Transcript

Domain 4 · Network Security

Advanced Security Mechanisms — NAC, Honeypots, and Authentication Models

Beyond basic firewalls and access controls, advanced security mechanisms offer deeper visibility and proactive defense. In this episode, we explore Network Access Control (NAC), a system that evaluates a device’s health and compliance status before granting access to the network.…

Transcript availableJuly 20, 2025
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S01E144Transcript

Domain 4 · Network Security

Centralized Authentication — TACACS+, RADIUS, SSO, and Directory Services

Centralized authentication simplifies user management while enhancing security. In this episode, we compare two core protocols—TACACS+ and RADIUS—and explain their roles in authenticating access to network infrastructure devices.…

Transcript availableJuly 20, 2025
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S01E145Transcript

Domain 4 · Network Security

Securing Access with 802.1X and EAP

802.1X is the gatekeeper of modern enterprise networks, ensuring only authenticated users and devices can connect. This episode explains how 802.1X works as a port-based network access control mechanism, acting as the foundation for many secure wireless and wired deployments.…

Transcript availableJuly 20, 2025
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S01E146Transcript

Domain 4 · Network Security

Risk Management, Security Assessments, and SIEM

Every security decision is about balancing risk, and in this episode, we dive into how organizations identify, measure, and manage those risks. You’ll learn the components of a risk management framework, including risk identification, assessment, mitigation, and ongoing monitoring.…

Transcript availableJuly 20, 2025
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S01E147Transcript

Domain 4 · Network Security

Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) Attacks

Denial-of-Service attacks aim to disrupt services by overwhelming a system’s resources—and understanding how they work is key to protecting against them. This episode covers the types of DoS attacks, including protocol, volumetric, and application-layer variants.…

Transcript availableJuly 20, 2025
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S01E148Transcript

Domain 4 · Network Security

On-Path Attacks and DNS Poisoning — Network Compromise Techniques

On-path attacks, formerly known as man-in-the-middle attacks, are some of the most dangerous network threats. In this episode, we explain how attackers insert themselves into the communication path between devices to intercept, modify, or impersonate data.…

Transcript availableJuly 20, 2025
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S01E149Transcript

Domain 4 · Network Security

VLAN Hopping and Layer 2 Exploits

VLANs offer segmentation—but they’re not invulnerable. In this episode, we look at how attackers can bypass VLAN boundaries using VLAN hopping techniques like double-tagging and switch spoofing.…

Transcript availableJuly 20, 2025
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S01E150Transcript

Domain 4 · Network Security

ARP Spoofing, MAC Spoofing, and Rogue Devices

When devices pretend to be something they’re not, serious security problems can follow. This episode focuses on spoofing attacks—specifically ARP spoofing and MAC address spoofing—that allow attackers to intercept or redirect traffic within a local network.…

Transcript availableJuly 20, 2025
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S01E151Transcript

Domain 4 · Network Security

Ransomware, Malware, and Password Attacks

Malicious software remains one of the most common and destructive threats to networks and users alike. In this episode, we examine different types of malware, focusing on ransomware, spyware, and trojans—each with unique goals and attack vectors.…

Transcript availableJuly 20, 2025
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S01E152Transcript

Domain 4 · Network Security

IP Spoofing, Deauthentication, and Social Engineering

Some of the most dangerous network threats don’t rely on malware—they rely on deception. In this episode, we explore IP spoofing, a method where attackers forge source IP addresses to disguise their origin or impersonate trusted devices.…

Transcript availableJuly 20, 2025
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S01E153Transcript

Domain 4 · Network Security

Phishing, Tailgating, and Physical Threats

Security doesn’t stop at the firewall—physical access and social manipulation play a major role in network compromise. In this episode, we explore phishing in its many forms, including spear phishing, whaling, and smishing (SMS-based phishing).…

Transcript availableJuly 20, 2025
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S01E155Transcript

Domain 4 · Network Security

Dynamic ARP Inspection, DHCP Snooping, and Control Plane Policing

Advanced network protection mechanisms focus on securing internal traffic and device behavior. This episode introduces three such features: Dynamic ARP Inspection (DAI), DHCP Snooping, and Control Plane Policing (CoPP).…

Transcript availableJuly 20, 2025
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S01E156Transcript

Domain 4 · Network Security

Hardening Network Devices — Interfaces, Passwords, and Firmware Management

Securing the network starts with securing its devices. In this episode, we focus on hardening best practices for routers, switches, and firewalls. This includes disabling unused interfaces, enforcing strong password policies, and limiting access with ACLs and administrative timeouts.…

Transcript availableJuly 20, 2025
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S01E157Transcript

Domain 4 · Network Security

Firewall Rules and ACL Management

Firewalls and access control lists are the gatekeepers of your network, and understanding how to configure them correctly is essential.…

Transcript availableJuly 20, 2025
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S01E159Transcript

Domain 4 · Network Security

Physical Security Fundamentals — Access Control and Asset Disposal

While cyber defenses are critical, physical security is just as important. In this episode, we explain how physical access controls protect infrastructure from unauthorized tampering, theft, or sabotage.…

Transcript availableJuly 20, 2025
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S01E160Transcript

Domain 4 · Network Security

Detection Methods and Prevention through Training

Security tools can’t catch every threat—but informed users often can. This episode looks at the balance between technical detection methods and user-driven prevention. We start by examining detection tools like antivirus, IDS/IPS, SIEM platforms, and anomaly-based monitoring.…

Transcript availableJuly 20, 2025
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S01E161Transcript

Domain 5 · Network Troubleshooting

Welcome to Domain 5 — Network Troubleshooting

In this final domain, we turn our focus to troubleshooting—a skill that ties together everything you’ve learned so far.…

Transcript availableJuly 20, 2025
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S01E162Transcript

Domain 5 · Network Troubleshooting

Troubleshooting Methodology — Identifying Problems and Probable Causes

The foundation of effective troubleshooting is a structured approach. In this episode, we introduce the CompTIA troubleshooting methodology, focusing on the first few steps: identifying the problem, establishing a theory of probable cause, and testing that theory.…

Transcript availableJuly 20, 2025
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S01E163Transcript

Domain 5 · Network Troubleshooting

Troubleshooting Methodology — Implementing Solutions and Documentation

Once you’ve confirmed the cause of a network issue, it's time to solve it. This episode covers the final stages of the troubleshooting methodology: establishing a plan of action, implementing the solution, verifying functionality, and documenting everything.…

Transcript availableJuly 20, 2025
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S01E164Transcript

Domain 5 · Network Troubleshooting

Cable Performance Specifications and Specialized Applications

Cable problems can often look like application issues, but they require a different kind of troubleshooting. In this episode, we review cable specifications like length limits, signal loss, impedance, and interference resistance.…

Transcript availableJuly 20, 2025
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S01E165Transcript

Domain 5 · Network Troubleshooting

Common Cable Faults, Errors, and Hardware Issues

Even a well-designed network can experience hardware or cabling faults over time. This episode breaks down common problems such as broken connectors, bent pins, cable kinks, and worn insulation.…

Transcript availableJuly 20, 2025
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S01E166Transcript

Domain 5 · Network Troubleshooting

Link Layer Diagnostics — Duplexing, Transceivers, and LEDs

Link-level problems are easy to overlook but frequently cause intermittent issues. This episode explores duplex mismatches—where one device is set to full duplex and the other to half—leading to collisions, retransmissions, and degraded performance.…

Transcript availableJuly 20, 2025
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S01E167Transcript

Domain 5 · Network Troubleshooting

Cable Testing Tools — Crimpers, Punchdowns, and Locators

Troubleshooting starts with the right tools. In this episode, we walk through the essential cable testing and installation tools you’ll use on the job.…

Transcript availableJuly 20, 2025
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S01E168Transcript

Domain 5 · Network Troubleshooting

Advanced Tools for Fiber Optics and Signal Testing

Fiber requires a different class of diagnostic tools due to its precision and sensitivity. In this episode, we cover devices like OTDRs (Optical Time Domain Reflectometers), power meters, and visual fault locators.…

Transcript availableJuly 20, 2025
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S01E169Transcript

Domain 5 · Network Troubleshooting

Wireless Troubleshooting — Tools and Bandwidth Analysis

Wireless networks introduce a layer of complexity that often demands specialized tools for visibility. In this episode, we cover wireless troubleshooting utilities including site survey tools, spectrum analyzers, and signal heatmaps.…

Transcript availableJuly 20, 2025
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S01E170Transcript

Domain 5 · Network Troubleshooting

Packet Inspection and Traffic Analysis Tools

To truly understand what’s happening on the network, you need to inspect the packets themselves. This episode introduces tools like Wireshark, tcpdump, and protocol analyzers that allow you to capture and analyze live traffic.…

Transcript availableJuly 20, 2025
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S01E171Transcript

Domain 5 · Network Troubleshooting

Network Discovery and Performance Monitoring

Network visibility starts with knowing what’s on your network. In this episode, we explain network discovery techniques using tools like ping sweeps, SNMP queries, and Nmap scans to identify devices, operating systems, and open services.…

Transcript availableJuly 20, 2025
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S01E173Transcript

Domain 5 · Network Troubleshooting

Interface, Routing, and Platform-Specific Diagnostics

Every device platform—whether Cisco, Juniper, or another—has its own diagnostic approach. In this episode, we explore common troubleshooting techniques across routers and switches, focusing on interface states, routing tables, and platform-specific commands.…

Transcript availableJuly 20, 2025
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S01E175Transcript

Domain 5 · Network Troubleshooting

Wireless Issues — Antenna Placement, Channels, and Signal Loss

Signal problems are among the most common wireless complaints—and many stem from poor antenna planning. This episode examines how antenna placement, orientation, and environment affect signal propagation.…

Transcript availableJuly 20, 2025
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S01E176Transcript

Domain 5 · Network Troubleshooting

Wireless Configuration Problems — SSID, Encryption, and Client Issues

Even if the signal is strong, configuration mistakes can block connectivity. This episode addresses common wireless configuration errors such as mismatched SSIDs, incorrect security settings, or outdated drivers on client devices.…

Transcript availableJuly 20, 2025
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S01E177Transcript

Domain 5 · Network Troubleshooting

Network Foundations — VLAN, Interface, and Configuration Checks

Sometimes network issues stem from the basics: incorrect VLAN assignment, disabled interfaces, or outdated configurations. This episode walks through foundational network checks that resolve a surprising number of connectivity issues.…

Transcript availableJuly 20, 2025
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S01E178Transcript

Domain 5 · Network Troubleshooting

Routing Troubleshooting — Missing Routes, DHCP, and Address Conflicts

Routing issues can silently break connectivity—even if everything looks fine at Layer 2. In this episode, we diagnose common routing problems, including missing default routes, misconfigured static routes, and incorrectly advertised subnets.…

Transcript availableJuly 20, 2025
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S01E179Transcript

Domain 5 · Network Troubleshooting

Collision Domains, Broadcast Storms, and Routing Loops

Poor network segmentation can lead to serious Layer 2 and Layer 3 problems. In this episode, we explain how excessive collision domains on legacy hubs or poorly configured switches can slow performance and cause retransmissions.…

Transcript availableJuly 20, 2025
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S01E181Transcript

Domain 5 · Network Troubleshooting

DNS and NTP Failures — Troubleshooting Name and Time Resolution

DNS and NTP are often invisible—until they fail. This episode shows how to diagnose and fix issues with domain name resolution and time synchronization, both of which affect authentication, connectivity, and performance.…

Transcript availableJuly 20, 2025
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S01E183Transcript

Domain 5 · Network Troubleshooting

BYOD, Licensing Issues, and Troubleshooting Oddities

Not every issue fits into neat categories. In this episode, we address edge-case problems like Bring Your Own Device (BYOD) compatibility, expired licenses on security appliances, and odd client behaviors that defy conventional logic.…

Transcript availableJuly 20, 2025
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S01E184Transcript

Domain 5 · Network Troubleshooting

Network Troubleshooting Methodology Recap and Exam Readiness

To wrap up the series, this episode reviews the full troubleshooting methodology—from identifying the problem to documenting the fix. We walk through common scenarios, showing how the steps apply in real life and what tools are best suited for each phase.…

Transcript availableJuly 20, 2025
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A Practical Study Routine

Listen, read, and review in the order that works for you.

01

Listen

Use the free audio course during a commute, walk, workout, or focused study session.

02

Read

Use the study guide to organize the material, annotate key ideas, and build a reference you can return to.

03

Review

Use the flashcards book to practice active recall and quickly revisit weak areas.

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