Question

Assume that NJIT has a CIDR address space 155.202.96.0/21. Which of the following addresses could be used as host addresses within that space? Of the ones that are not within the space explain why.

a. 155.202.126.133
b. 155.202 .119 .124
c. 155.202 .101 .255
d. 155.204.98.170
e. 155.202 .103 .85

Answer 1

Only 155.202.103.85 can be used as a host address within the given CIDR address space.

Step-by-step explanation:

The CIDR address space of 155.202.96.0/21 specifies that the network address is 155.202.96.0 and the range of usable host addresses is from 155.202.96.1 to 155.202.103.254.

Therefore, among the given options, only 155.202.103.85 falls within the usable host addresses range. The other options - 155.202.126.133, 155.202.119.124, 155.202.101.255, and 155.204.98.170 - are not within the specified address space and cannot be used as host addresses.