Computer Networks

Track: Computer Awareness for Banking and Recruitment Examinations
Level: Beginner
Coverage: Eight lessons (CA-07-01 to CA-07-08)
Practice: 96 original exam-style MCQs with individually explained answers

Imagine a banking office where several employees use a shared printer, a branch sends information to the head office, and a customer opens an online service on a smartphone. The devices and services communicate through different kinds of networks. Understanding these basic connections is more useful than memorizing the names of cables without knowing their purpose.

How to study: Learn what each term does, compare similar terms, and then memorize the objective-exam facts. Attempt each set of 12 questions before reading its answers. These are original practice questions and are not claimed previous-year questions. Textbook networking classifications are simplified learning models, and real deployments often combine several technologies.

Module learning outcomes

By the end of the module, you should be able to:

1. Explain a computer network, its devices, benefits, and basic transmission vocabulary.
2. Distinguish PAN, LAN, MAN and WAN by typical coverage and use.
3. Recognize bus, star, ring, mesh, tree and hybrid topologies.
4. Explain the basic roles of a hub, switch, router, repeater, modem, gateway and wireless access point.
5. Compare copper, optical-fibre and common wireless media.
6. Identify IPv4, IPv6, private/public IP addresses and MAC addresses at awareness level.
7. Match common Internet and email protocols to their functions.
8. Tell apart Wi-Fi, Bluetooth, NFC and cellular/mobile networks without confusing connectivity with Internet access.