FAQs on Introduction to Computer Networks

Question 1

1. What exactly is a computer network and how does it work?

Accepted Answer

Ans. A computer network is a group of interconnected devices that communicate and share resources using established protocols and transmission media. Networks enable data exchange between computers, printers, and servers across local or global distances, forming the backbone of modern digital communication and information sharing.

Question 2

2. Why do we need different types of network topologies like star, mesh, and bus?

Accepted Answer

Ans. Different network topologies serve distinct purposes based on scalability, cost, and reliability needs. Star topology centralises control, mesh topology ensures redundancy, and bus topology minimises cabling costs. Choosing the right topology depends on your network's size, budget, and fault-tolerance requirements for optimal performance and resource management.

Question 3

3. What's the difference between LAN, MAN, and WAN in computer networks?

Accepted Answer

Ans. LANs cover limited areas like offices, MANs span cities, and WANs connect geographically distant locations globally. LAN offers high speeds but limited range; WAN enables worldwide connectivity but with lower bandwidth. Understanding these distinctions helps in designing networks appropriate for an organisation's geographical and operational scope.

Question 4

4. How do network protocols like TCP/IP actually help computers communicate with each other?

Accepted Answer

Ans. Network protocols establish standardised rules for data transmission, error detection, and packet delivery between devices. TCP/IP protocol suite manages how data is broken into packets, routed across networks, and reassembled at destinations. These communication standards ensure reliable, ordered, and secure information exchange regardless of underlying hardware differences.

Question 5

5. What are the main advantages and disadvantages of networking computers together?

Accepted Answer

Ans. Network advantages include resource sharing, improved communication, centralised data management, and cost efficiency through shared hardware. Disadvantages involve security vulnerabilities, dependency on network infrastructure, initial setup costs, and potential network congestion. Balancing these factors is essential when implementing network solutions for any educational or organisational environment.

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