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. 192.168.1.256

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

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

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

Answer: Option D

Solution (By JKExamLibrary)

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

This question belongs to: Computer Computer Networking

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Question #1 Report Error

What is the binary equivalent of the subnet mask 255.255.255.0?

A. 00000000.00000000.00000000.11111111

B. 11111111.00000000.00000000.00000000

C. 11111111.11111111.00000000.00000000

D. 11111111.11111111.11111111.00000000

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Correct Answer: Option D

Explanation:
255.255.255.0 in binary is 24 ones followed by 8 zeros.

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Question #2 Report Error

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

A. Stores DHCP leases

B. Stores mappings between IP addresses and MAC addresses

C. Stores DNS records

D. Stores routing information

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Correct Answer: Option B

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

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Question #3 Report Error

Which network topology is used in early Ethernet networks with coaxial cable?

A. Mesh

B. Bus

C. Ring

D. Star

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Correct Answer: Option B

Explanation:
Early Ethernet used a bus topology with coaxial cable (thicknet/thinnet).

This question belongs to: Computer Computer Networking

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