GateQA — Free GATE CS Preparation Platform

GateQA is a free GATE CS preparation platform featuring 3,500+ previous-year questions (1987–2026), 36,000+ aptitude questions, subject-wise and year-wise mock tests, performance analytics, and full offline support. Practice Operating Systems, Algorithms, DBMS, Computer Networks, Theory of Computation, Discrete Mathematics, Compiler Design, Digital Logic, and more.

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GATE CS Subject

Computer Networks GATE CS Questions

Overview & Analysis

Computer Networks (CN) is a major subject in GATE CS, contributing around 7 to 9 marks. It covers the theoretical OSI model, TCP/IP stack layers, and practical networking protocols.

Questions often require calculating subnet masks, network addresses, TCP window sizes, routing table entries, and protocol delays (like transmission and propagation delay in sliding window protocols).

Frequently Asked Questions (FAQ)

Q: What are the most important sections in GATE Computer Networks?

A: IP addressing and subnetting, sliding window protocols (Go-Back-N, Selective Repeat), TCP congestion control mechanisms, routing protocols (distance vector, link state), and application layer protocols (DNS, HTTP, SMTP) are the most highly-weighted topics.

Q: How can I solve subnetting questions in GATE CN?

A: Master binary-to-decimal conversions, understand classless inter-domain routing (CIDR) notation, and practice calculating network IDs, broadcast IDs, and the range of usable host IPs for arbitrary subnets.

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