Identify the correct order in which a server process must invoke the function calls accept , bind , listen , and recv according to UNIX socket API. A) listen, accept, bind, recv B) bind, listen, accept, recv C) bind, accept, listen, recv D) accept, listen, bind, recv

Official answer: B) bind, listen, accept, recv. Explanation: In a standard TCP connection using the UNIX socket API, the server process follows these steps: 1. `socket()` creates an endpoint for communication. 2. `bind()` assigns a local protocol address (IP address and port) to the socket. 3. `listen()` marks the socket as passive, indicating that it will be used to accept incoming connection requests, and specifies a backlog queue. 4. `accept()` extracts the first connection request on the queue of pending connections and creates a new connected socket. 5. `recv()` reads data received from the client over the established connection. Therefore, the correct invocation sequence is bind, listen, accept, recv, which corresponds to option (B).

Computer Networks · TCP Flow and Congestion Control

Official IIT answer key · IIT Kanpur · Audited Aug 2026

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GATE CSE 2015 Set 2 Q20 · MCQ · 1 mark

Identify the correct order in which a server process must invoke the function calls `accept`, `bind`, `listen`, and `recv` according to UNIX socket API.

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Key concept

TCP Flow and Congestion Control

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How GATE tests TCP Flow and Congestion Control

GATE CS tests TCP across three primary areas: congestion control dynamics (window growth phases, timeout recovery, and round-by-round segment tracking), sequence number wrap-around time and bit-budget calculations against MSL, and connection lifecycle mechanics (3-way handshake flags, state transitions during active/passive close, and crash recovery with RST segments). Questions are balanced between computational NATs involving RTTs and discrete bit math, and conceptual MSQ/MCQs focusing on byte-stream mechanics, piggybacking, and RFC 793 protocol invariants.

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Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.

Computer Networks · TCP Flow and Congestion Control

Official IIT answer key · IIT Kanpur · Audited Aug 2026

Take topic test

GATE CSE 2015 Set 2 Q20 · MCQ · 1 mark

Identify the correct order in which a server process must invoke the function calls `accept`, `bind`, `listen`, and `recv` according to UNIX socket API.

Select an option to check

Key concept

TCP Flow and Congestion Control

Step-by-step verified solution

Examiner trap & misconception

Topic notes

How GATE tests TCP Flow and Congestion Control

Full TCP Flow and Congestion Control guide →

More on TCP Flow and Congestion Control

All 23 questions on TCP Flow and Congestion Control →

Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.

Identify the correct order in which a server process must invoke the function calls `accept`, `bind`, `listen`, and `recv` according to UNIX socket API.

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Identify the correct order in which a server process must invoke the function calls `accept`, `bind`, `listen`, and `recv` according to UNIX socket API.

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Check you can still solve TCP Flow and Congestion Control under a clock

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Identify the correct order in which a server process must invoke the function calls accept, bind, listen, and recv according to UNIX socket API.

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Check you can still solve TCP Flow and Congestion Control under a clock

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Identify the correct order in which a server process must invoke the function calls accept, bind, listen, and recv according to UNIX socket API.

Step-by-step verified solution

Check you can still solve TCP Flow and Congestion Control under a clock

More from GATE CSE 2015 Set 2

More on TCP Flow and Congestion Control

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Identify the correct order in which a server process must invoke the function calls `accept`, `bind`, `listen`, and `recv` according to UNIX socket API.

Identify the correct order in which a server process must invoke the function calls `accept`, `bind`, `listen`, and `recv` according to UNIX socket API.