How many usable host addresses are in a network with prefix /25?
Answer and explanation
Correct answer: D. 126
- Step 1: There are 32 - 25 = 7 host bits, giving 128 addresses.
- Step 2: Subtract the network and broadcast addresses: 126.
Answer
126.
Why not the others: 128, 127 and 2 do not fit.
Practise more Networks, security and data.
Free questions with an explanation for every one, and full timed Saudi Secondary School Certificate mock tests.
More Networks, security and data questions
- How many usable host addresses are in a network with prefix /30?
- How many usable host addresses are in a network with prefix /29?
- How many usable host addresses are in a network with prefix /24?
- How many usable host addresses are in a network with prefix /26?
- How many usable host addresses are in a network with prefix /27?
- How many different values can be stored using 9 bits?