Question 26
For 10.20.30.40/16, what is the broadcast address of the subnet?
Detailed Solution
A /16 leaves 16 host bits, so the broadcast address is 10.20.255.255.
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GATE CSE Network Layer – Computer Networks Practice Test | Set 1
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Question 27
How many usable host addresses are available in a conventional IPv4 /27 subnet?
Detailed Solution
A /27 has 5 host bits, giving 32 addresses; excluding network and broadcast leaves 30 usable addresses.
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Question 28
Which CIDR prefix corresponds to the subnet mask 255.255.255.192?
Solution & Detailed Explanation
Step-by-Step Solution
1
255.255.192 contains 26 one-bits.
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Question 29
An IPv4 /24 network is divided into /26 subnets. How many equal-sized subnets are created?
Detailed Solution
The prefix increases by 2 bits, so $2^2$ = 4 subnets.
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Question 30
A /28 IPv4 subnet contains how many total addresses?
Detailed Solution
A /28 leaves 4 host bits, giving $2^4$ = 16 total addresses.
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