What is the function of a router's ARP table? MCQ with Answer and Explanation

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What is the function of a router's ARP table?

A. Stores routing information

B. Stores DHCP leases

C. Stores mappings between IP addresses and MAC addresses

D. Stores DNS records

Answer: Option C

Solution (By JKSSB Mock Tests)

The ARP table on a router caches IP-to-MAC mappings for local devices.

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Question #1

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What new address standard was designed to replace IPv4, utilizing 128-bit addresses to eliminate global address exhaustion issues completely?

A. IPX/SPX

B. IPv6

C. IPv5

D. IPv8

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Correct Answer: Option B

Explanation:
IPv6 addresses are 128 bits long, written as hexadecimal strings separated by colons, offering a vast array of unique addresses.

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Question #2

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What is a default gateway in a network?

A. The device that routes traffic to other networks

B. The network switch

C. The DHCP server

D. The primary DNS server

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Correct Answer: Option A

Explanation:
The default gateway is a router that connects the local network to external networks.

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Question #3

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Which topology is most commonly used in small office/home office (SOHO) networks?

A. Star

B. Bus

C. Ring

D. Mesh

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Correct Answer: Option A

Explanation:
Star topology with a central router/switch is typical for SOHO networks.

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