What default subnet mask is associated with Class B IP networks under traditional classful network addressing parameters? MCQ with Answer and Explanation

Question
What default subnet mask is associated with Class B IP networks under traditional classful network addressing parameters?
A. 255.0.0.0
B. 255.255.255.255
C. 255.255.0.0
D. 255.255.255.0
Answer: Option C
Solution (By JKSSB Mock Tests)
Class B networks default to a 16-bit prefix length, which maps to a default subnet mask of 255.255.0.0.
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Question #1
Which of the following is a private IP address designated for exclusive use within local area networks?
A. 10.0.0.1
B. 168.192.1.1
C. 200.100.50.1
D. 8.8.8.8
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Correct Answer: Option A

Explanation:
The 10.0.0.0 to 10.255.255.255 range is defined by RFC 1918 as a private Class A IP block reserved for internal networks.
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Question #2
What structural advantage does a full Mesh Topology layout offer compared to alternative network configurations?
A. It removes the requirement for hardware MAC profiles.
B. It can operate without network interface cards.
C. It provides maximum fault tolerance and reliability by establishing direct redundant connections between all nodes.
D. It minimizes physical cabling costs.
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Correct Answer: Option C

Explanation:
Because a full mesh topology links every device directly to every other device, a failed line can be easily bypassed using alternative redundant paths.
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Question #3
What is the default protocol for secure web browsing?
A. FTP
B. HTTPS
C. HTTP
D. SSH
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Correct Answer: Option B

Explanation:
HTTPS is the secure version of HTTP, using SSL/TLS encryption.
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