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 A
B. Class B
C. Class C
D. Class D
Answer: Option A
Solution (By JKExamLibrary)
Class A addresses have the first bit as 0, ranging from 0.0.0.0 to 127.255.255.255.

This question belongs to: Computer Computer Networking

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Practice More Computer Networking Questions

Question #1 Report Error
What is the default subnet mask assigned to standard Class C IP addresses under traditional classful addressing configurations?
A. 255.255.0.0
B. 255.255.255.0
C. 255.255.255.255
D. 255.0.0.0

Correct Answer: Option B


Explanation:
Class C networks allocate 24 bits to the network ID, which corresponds to a default subnet mask of 255.255.255.0.

This question belongs to: Computer Computer Networking
Question #2 Report Error
What is the main function of a router's routing protocol?
A. To filter traffic
B. To assign IP addresses
C. To exchange routing information with other routers
D. To resolve MAC addresses

Correct Answer: Option C


Explanation:
Routing protocols (e.g., OSPF, BGP) allow routers to share information about network paths.

This question belongs to: Computer Computer Networking
Question #3 Report Error
What is the primary function of a Router in a computer network ecosystem?
A. To act as a physical patch panel for structural wiring.
B. To regenerate weak signals across long cable lengths.
C. To connect distinct networks and route data packets based on logical IP addresses.
D. To convert analog signals directly into serial bitstreams.

Correct Answer: Option C


Explanation:
Routers operate at the Network Layer (Layer 3) and use IP addresses to determine the optimal path for forwarding data packets across different networks.

This question belongs to: Computer Computer Networking