GATE CS 2026 Set 2 — Question 33
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Computer Networks → Network Layer: Addressing → Subnetting & CIDR
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Question
If an IP network uses a subnet mask of 255.255.240.0, the maximum number of IP addresses that can be assigned to network interfaces is __________.
Correct answer
4094 to 4094
Solution
The subnet mask is given as 255.255.240.0.Converting to binary:
The number of host bits (0s) is .The total number of IP addresses in the subnet is .However, two addresses are reserved:
- 255 = 11111111
- 255 = 11111111
- 240 = 11110000
- 0 = 00000000
The number of host bits (0s) is .The total number of IP addresses in the subnet is .However, two addresses are reserved:
1.The Network Address (all host bits 0).
2.The Broadcast Address (all host bits 1).
Therefore, the maximum number of IP addresses that can be assigned to network interfaces (hosts) is:Continue learning with Success Tracker
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