Which IP address class has the first bit as 0? MCQ with Answer and Explanation

Which IP address class has the first bit as 0?
A. Class B
B. Class C
C. Class D
D. Class A
Answer: Option D
Solution (By JKSSB Mock Tests)
Class A addresses have the first bit as 0, ranging from 0.0.0.0 to 127.255.255.255.

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Practice More Computer Networking Questions

Question #1
Which of the following is a private IP address?
A. 172.32.1.1
B. 10.0.0.1
C. 192.169.1.1
D. 203.0.113.1

Correct Answer: Option B


Explanation:
10.0.0.1 is within the 10.0.0.0/8 private range.

This question belongs to: Computer Computer Networking
Question #2
What type of network architecture designates a high-capacity central machine to host resources, validate logins, and manage security parameters for all connected client systems?
A. Linear Bus Pattern
B. Client-Server Model
C. Decentralized Mesh Mesh
D. Peer-to-Peer Model

Correct Answer: Option B


Explanation:
A client-server model uses a centralized server to manage security, databases, and network administration, responding to requests from client workstations.

This question belongs to: Computer Computer Networking
Question #3
What notation standard is used to write and display modern 128-bit IPv6 address configurations readably?
A. Binary bitstream flags
B. Eight groups of four hexadecimal digits separated by colons
C. Dotted decimal fields
D. Base-64 character strings

Correct Answer: Option B


Explanation:
IPv6 addresses are formatted as eight groups of four hexadecimal digits separated by colons (e.g., 2001:0db8:0000:0000:0000:ff00:0042:8329).

This question belongs to: Computer Computer Networking