Computer Networks · Data Link Layer
Official IIT answer key · IIT Roorkee · Audited Aug 2026
GATE CSE 2017 Set 2 Q34 · MCQ · 2 marks
Key concept
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Topic notes
Medium Access Control (MAC) in GATE CS is predominantly tested through quantitative numerical problems and conceptual protocol comparisons. The focus is split between random access protocols (CSMA/CD collision detection constraints and slotted ALOHA transmission probabilities), controlled access (Token Ring round-trip delays and token holding limits), and wireless MAC protocols (IEEE 802.11 CSMA/CA features, channels, and ACK mechanisms). Most questions carry 2 marks and appear in NAT format requiring unit conversions.
Full Data Link Layer guide →Consider a binary code that consists of only four valid codewords as given below: 00000, 01011, 10101, 11110 Let the minimum Hamming distance of the code be p and the maximum number of erroneous bits that can be corrected by the code be q. Then the values of p and q are
Topic-wise GATE CS PYQs with verified steps
Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.
