How many host computers can be assigned a valid IPv4 address when using a CIDR /24 prefix?
A) 254
B) 512
C) 65,000
D) 16 million

Question

Quizplus · Accepted Answer

When using a CIDR /24 prefix, the subnet mask is 255.255.255.0. This means there are 8 bits available for host addresses. With 8 bits, there are 2^8 possible combinations, minus 2 for the network address and broadcast address, leaving 254 usable host addresses.

How Many Host Computers Can Be Assigned a Valid IPv4