What is the primary role of a subnet mask when paired with an active IPv4 address value?
A. To resolve hardware MAC pointers to domain paths.
B. To provide physical encryption layers over frame headers.
C. To toggle networks between half and full-duplex transmission modes.
D. To explicitly delineate the network routing segment from the unique host identifier segment.
Answer: Option D
Solution (By JKSSB Mock Tests)
The subnet mask uses binary bit masking to indicate which part of an IP address refers to the network identity and which part refers to the host device.
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.
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