Which of the following represents a valid IPv6 address string format? MCQ with Answer and Explanation

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Which of the following represents a valid IPv6 address string format?

A. 00-14-22-01-23-45

B. 2001:0db8:85a3:0000:0000:8a2e:0370:7334

C. [http://www.google.com/ipv6](https://www.google.com/search?q=http://www.google.com/ipv6)

D. 192.168.1.256

Answer: Option B

Solution (By JKSSB Mock Tests)

IPv6 addresses are written as groups of four hexadecimal digits separated by colons, encompassing eight separate structural blocks.

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Question #1

Which of the following is a Class B private IP address range?

A. 192.168.0.0 to 192.168.255.255

B. 10.0.0.0 to 10.255.255.255

C. 172.16.0.0 to 172.31.255.255

D. 169.254.0.0 to 169.254.255.255

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Correct Answer: Option C

Explanation:
172.16.0.0/12 is a Class B private range.

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Question #2

What is the maximum data rate of a standard Ethernet (10BASE-T) network?

A. 10 Mbps

B. 1 Gbps

C. 10 Gbps

D. 100 Mbps

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Correct Answer: Option A

Explanation:
10BASE-T offers 10 Mbps; it is the original Ethernet standard over twisted pair.

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Question #3

What is the purpose of a router's routing table?

A. Stores security policies

B. Stores MAC addresses

C. Stores IP addresses and next-hop information for forwarding packets

D. Stores domain name mappings

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Correct Answer: Option C

Explanation:
A routing table contains destination networks and the next hop to forward packets.

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