Basic Computer Networking Course

Lesson 1 • Key Networking Terminology

Introduces essential vocabulary used throughout the course. Precise terminology enables accurate communication in professional settings.

Lesson 2 • Network Topologies

Covers physical and logical arrangements of devices in a network. Students identify topology trade-offs relevant to real deployments.

Lesson 3 • What Is a Computer Network

Defines networks, their purpose, and real-world applications. Establishes the conceptual baseline for all subsequent networking topics.

Lesson 1 • The Seven OSI Layers

Details each OSI layer's function, protocols, and devices. Students can classify any networking component by its OSI layer.

Lesson 2 • The TCP/IP Model

Maps the four-layer TCP/IP model to OSI equivalents and real protocols. Bridges theoretical OSI knowledge to practical internet communication.

Lesson 3 • Purpose of Layered Models

Explains why abstraction layers simplify network design and troubleshooting. Frames the OSI model as a universal reference tool.

Lesson 1 • Subnet Masks and CIDR

Explains how subnet masks divide networks and introduces CIDR notation. Students calculate network and host portions of any address.

Lesson 2 • Address Resolution Protocols

Covers ARP for IPv4 and NDP for IPv6 address-to-MAC resolution. Links Layer 3 addressing to Layer 2 delivery mechanisms.

Lesson 3 • Subnetting Techniques

Teaches manual subnetting using binary maths and shortcut methods. Students design efficient address plans for given host requirements.

Lesson 4 • IPv4 Addressing Fundamentals

Covers binary and dotted-decimal notation, address classes, and ranges. Provides the arithmetic foundation needed for subnetting.

Lesson 1 • Wireless Access Points and Controllers

Covers AP operation modes, SSID configuration, and controller-based management. Students distinguish standalone from enterprise wireless deployments.

Lesson 2 • Network Device Selection Criteria

Guides device selection based on scale, performance, and budget constraints. Students apply decision frameworks to realistic design problems.

Lesson 3 • Hubs, Switches, and Bridges

Compares Layer 1 and Layer 2 devices by function, collision domains, and performance. Students explain why switches replaced hubs.

Lesson 4 • Firewalls and Security Appliances

Introduces stateful firewalls, DMZ design, and next-generation firewall features. Establishes the security device role in network architecture.

Lesson 1 • Spanning Tree Protocol

Covers STP, RSTP, and loop prevention in redundant switched networks. Students trace port states and understand convergence behaviour.

Lesson 2 • VLANs and Trunking

Explains VLAN segmentation, trunk links, and 802.1Q tagging. Students design VLANs to separate traffic and improve security.

Lesson 3 • Ethernet Standards and Cabling

Reviews IEEE Ethernet standards, cable categories, and connector types. Students match cabling to speed and distance requirements.

Lesson 4 • Switch Operation and MAC Tables

Details how switches learn, store, and use MAC addresses for forwarding. Builds on Layer 2 device knowledge from the previous chapter.

Lesson 1 • Dynamic Routing Fundamentals

Introduces routing protocol categories, metrics, and administrative distance. Prepares students to evaluate and choose dynamic protocols.

Lesson 2 • Static Routing Configuration

Covers manual route entry, default routes, and floating static routes. Students configure static routing for small, stable topologies.

Lesson 3 • EIGRP and Distance Vector Protocols

Covers EIGRP's hybrid behaviour, DUAL algorithm, and RIP basics. Students compare protocol efficiency for different network sizes.

Lesson 4 • OSPF Configuration and Operation

Details OSPF areas, LSA types, and neighbour relationships. Students configure single-area OSPF and verify adjacency formation.

Lesson 1 • NTP and Network Time Management

Covers NTP hierarchy, stratum levels, and time synchronisation importance. Accurate time underpins logging, security, and protocol operation.

Lesson 2 • SNMP and Network Monitoring Basics

Introduces SNMP versions, MIBs, and trap-based alerting. Students set up basic monitoring to detect device and link failures.

Lesson 3 • DHCP Operation and Configuration

Explains the DORA process, scope configuration, and DHCP relay. Students deploy DHCP for automatic IP address assignment.

Lesson 4 • DNS Resolution and Hierarchy

Covers DNS record types, recursive resolution, and zone management. Students configure DNS clients and interpret resolution failures.

Lesson 1 • Switch Security Techniques

Addresses port security, DHCP snooping, and dynamic ARP inspection. Students harden Layer 2 infrastructure against common LAN attacks.

Lesson 2 • Access Control Lists

Covers standard and extended ACLs for traffic filtering on routers. Students write, apply, and verify ACLs to enforce security policies.

Lesson 3 • Security Principles and Threat Landscape

Introduces CIA triad, common attack types, and attacker motivations. Frames security as a continuous process rather than a one-time fix.

Lesson 4 • VPN and Encrypted Tunnels

Explains site-to-site and remote-access VPN types using IPsec and SSL/TLS. Students understand how VPNs protect data in transit.