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Computer Networks · DNS and HTTP
Official IIT answer key · IIT Roorkee · Audited Aug 2026
GATE CSE 2026 Set 2 Q22 · MCQ · 1 mark
Key concept
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Topic notes
In GATE CS, the 'DNS and HTTP' topic is tested predominantly through conceptual protocol interaction, chronological packet sequencing, connection lifecycle mechanics, and timing calculations. Early exams focused on basic protocol roles (SMTP, POP3, HTTP), statefulness, and HTML/XML properties, whereas recent exams (2020–2026) strongly emphasize quantitative analysis of iterative DNS hierarchies, persistent vs. non-persistent HTTP, pipelining, and total round-trip time (RTT) latency.
Full DNS and HTTP guide →Which one of the following protocols may need to broadcast some of its messages?
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Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.