GATE CS 2025 Set 2 — Question 16

MCQ+1 / -0.33EasyARP & RARPNetwork Layer: AddressingComputer NetworksTCP Segment FormatTransport Layer

Computer Networks → Network Layer: Addressing → ARP & RARP

Last updated 5 September 2026

Question

Consider the following statements: (i) Address Resolution Protocol (ARP) provides a mapping from an IP address to the corresponding hardware (link-layer) address. (ii) A single TCP segment from a sender S to a receiver R cannot carry both data from S to R and acknowledgement for a segment from R to S. Which ONE of the following is CORRECT?

Correct answer (B) (i) is TRUE and (ii) is FALSE Solution Statement (i) is TRUE. The Address Resolution Protocol (ARP) is used to map a network layer address (like an IPv4 address) to a link layer address (like a MAC address). Statement (ii) is FALSE. TCP supports piggybacking, where an acknowledgment for a received packet can be included in the header of an outgoing data packet. Therefore, a single TCP segment can carry both data (payload) and an acknowledgment (in the ACK field of the header). Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (B) (i) is TRUE and (ii) is FALSE Solution Statement (i) is TRUE. The Address Resolution Protocol (ARP) is used to map a network layer address (like an IPv4 address) to a link layer address (like a MAC address). Statement (ii) is FALSE. TCP supports piggybacking, where an acknowledgment for a received packet can be included in the header of an outgoing data packet. Therefore, a single TCP segment can carry both data (payload) and an acknowledgment (in the ACK field of the header).

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