What is the purpose of a packet header? MCQ with Answer and Explanation

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What is the purpose of a packet header?

A. Contains error correction codes

B. Contains routing tables

C. Contains the actual data payload

D. Contains source and destination addresses and control information

Answer: Option D

Solution (By JKSSB Mock Tests)

Packet headers include addressing, protocol, and other metadata for routing and reassembly.

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Question #1

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Which network protocol automatically assigns IP address leases and gateway configuration paths to client devices when they boot up?

A. ARP

B. NAT

C. DHCP

D. ICMP

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Correct Answer: Option C

Explanation:
DHCP dynamically manages network configuration parameters, automatically assigning IP leases to devices when they connect to the network.

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Question #2

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Which network topology is most resistant to cable failure?

A. Ring

B. Mesh

C. Star

D. Bus

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Correct Answer: Option B

Explanation:
Mesh provides multiple redundant paths, so a single cable failure does not disconnect the network.

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Question #3

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What is the range of port numbers for well-known (system) ports in TCP/IP?

A. 1024 to 49151

B. 1 to 255

C. 0 to 1023

D. 49152 to 65535

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Correct Answer: Option C

Explanation:
Well-known ports are 0-1023, registered ports 1024-49151, and dynamic/private ports 49152-65535.

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