What is the purpose of a network Subnet Mask configuration parameter? MCQ with Answer and Explanation

What is the purpose of a network Subnet Mask configuration parameter?
A. To provide hardware encryption layers over frame headers.
B. To resolve hardware MAC addresses to web domain paths.
C. To switch data links between half and full-duplex transmission modes.
D. To separate an IP address into its network identification segment and host identification segment.
Answer: Option D
Solution (By JKSSB Mock Tests)
A subnet mask uses binary bit masking to define which part of an IP address indicates the network identity and which part indicates the specific host device.

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Practice More Computer Networking Questions

Question #1
What is the size of an IPv6 address in bits?
A. 256
B. 128
C. 32
D. 64

Correct Answer: Option B


Explanation:
IPv6 addresses are 128 bits long, providing a huge address space.

This question belongs to: Computer Computer Networking
Question #2
What is the default subnet mask for a standard Class A IP address under classic classful routing rules?
A. 255.255.255.0
B. 255.255.0.0
C. 255.0.0.0
D. 255.255.255.255

Correct Answer: Option C


Explanation:
Class A networks allocate the first octet to the network identity, mapping to a default subnet mask of 255.0.0.0 (or /8).

This question belongs to: Computer Computer Networking
Question #3
Which of the following is a private IP address belonging strictly to the Class B network registry block?
A. 10.150.1.1
B. 192.168.10.5
C. 224.0.0.1
D. 172.16.50.4

Correct Answer: Option D


Explanation:
The private Class B IP range spans from 172.16.0.0 to 172.31.255.255, as defined by RFC 1918.

This question belongs to: Computer Computer Networking