What is a MAC address? MCQ with Answer and Explanation

Question

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What is a MAC address?

A. A 32-bit logical address

B. A 16-bit port number

C. A 48-bit physical address burned into the NIC

D. A 64-bit address used for IPv6

Answer: Option C

Solution (By JKSSB Mock Tests)

MAC (Media Access Control) address is a 48-bit unique identifier assigned to network interfaces.

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Question #1

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Which type of network spans an entire city or metropolitan municipal district, linking multiple business offices and schools together?

A. LAN

B. MAN

C. WAN

D. PAN

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Correct Answer: Option B

Explanation:
A Metropolitan Area Network (MAN) is optimized to connect resources across city-wide or regional municipal scopes.

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Question #2

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Which device is used to convert digital signals to analog for transmission over a cable network?

A. DSL modem

B. Cable modem

C. Router

D. Switch

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Correct Answer: Option B

Explanation:
A cable modem is used for cable internet, converting digital data for transmission over coaxial cable.

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Question #3

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What does a modem do?

A. Filters network traffic

B. Connects a LAN to a WAN by converting digital signals to analog and vice versa

C. Assigns IP addresses

D. Amplifies signals

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Correct Answer: Option B

Explanation:
A modem (modulator-demodulator) converts digital data from a computer to analog for transmission over telephone lines and vice versa.

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