Which protocol is used to resolve an IP address to a MAC address? MCQ with Answer and Explanation

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Which protocol is used to resolve an IP address to a MAC address?

A. RARP

B. ARP

C. DHCP

D. DNS

Answer: Option B

Solution (By JKSSB Mock Tests)

ARP (Address Resolution Protocol) maps IP addresses to MAC addresses.

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Question #1

What is the main difference between a hub and a switch?

A. Hub is intelligent; switch is not

B. Hub broadcasts to all ports; switch forwards to specific port based on MAC

C. Hub forwards data based on IP, switch based on MAC

D. Hub works at layer 3; switch at layer 2

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Correct Answer: Option B

Explanation:
A hub sends data to all ports, while a switch learns MAC addresses and sends only to the destination port.

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Question #2

Which type of device converts digital binary signals from a computer interface into analog patterns to transmit them over older public telephone lines?

A. Switch

B. Bridge

C. Router

D. Modem

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Correct Answer: Option D

Explanation:
A modem modulates digital data into analog waves for transmission over telephone copper lines, and demodulates them back upon reception.

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Question #3

How many total octets are used to construct a standard 32-bit IPv4 network address configuration?

A. 8 octets

B. 2 octets

C. 6 octets

D. 4 octets

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Correct Answer: Option D

Explanation:
An IPv4 address contains 32 bits divided into 4 octets (8 bits each), separated by dots in decimal format.

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