GATE CS 2018 Set 1 — Question 23

MCQ+1 / -0.33EasyEthernet & MACMedium Access & LANsComputer NetworksIPv6 AddressingNetwork Layer: AddressingUDPTransport LayerTCP Segment Format

Computer Networks → Medium Access & LANs → Ethernet & MAC

Last updated 5 September 2026

Question

Match the following: Field Length in bits P. UDP Header’s Port Number I. 48 Q. Ethernet MAC Address II. 8 R. IPv6 Next Header III. 32 S. TCP Header’s Sequence Number IV. 16

Field	Length in bits
P. UDP Header’s Port Number	I. 48
Q. Ethernet MAC Address	II. 8
R. IPv6 Next Header	III. 32
S. TCP Header’s Sequence Number	IV. 16

Correct answer (C) P-IV, Q-I, R-II, S-III Solution The correct lengths for the given network fields are: P. UDP Header’s Port Number : 16 bits (IV) Q. Ethernet MAC Address : 48 bits (I) R. IPv6 Next Header : 8 bits (II) S. TCP Header’s Sequence Number : 32 bits (III) Matching these gives: P-IV, Q-I, R-II, S-III, which corresponds to option (C). Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (C) P-IV, Q-I, R-II, S-III Solution The correct lengths for the given network fields are: P. UDP Header’s Port Number : 16 bits (IV) Q. Ethernet MAC Address : 48 bits (I) R. IPv6 Next Header : 8 bits (II) S. TCP Header’s Sequence Number : 32 bits (III) Matching these gives: P-IV, Q-I, R-II, S-III, which corresponds to option (C).

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