What is the purpose of a VLAN tag in Ethernet frames? MCQ with Answer and Explanation

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What is the purpose of a VLAN tag in Ethernet frames?

A. To identify which VLAN the frame belongs to

B. To encrypt the frame

C. To prioritize traffic

D. To indicate frame length

Answer: Option A

Solution (By JKSSB Mock Tests)

VLAN tags (802.1Q) are added to Ethernet frames to specify the VLAN membership.

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Which networking utility uses ICMP packets to verify if a remote destination host is online and record round-trip latency metrics?

A. NSLOOKUP

B. PING

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Correct Answer: Option B

Explanation:
The ping command uses ICMP Echo Request and Echo Reply packets to test basic network connectivity and measure latency.

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What is the full form of MAN?

A. Multiple Area Network

B. Metropolitan Area Network

C. Medium Area Network

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Correct Answer: Option B

Explanation:
MAN stands for Metropolitan Area Network, covering a city or large campus.

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Question #3

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Which of the following is a protocol used for secure communication over the internet?

A. Telnet

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Correct Answer: Option B

Explanation:
HTTPS (HTTP Secure) uses SSL/TLS to encrypt data for secure communication.

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