What is the network address for the host with IP address 192.168.23.61/28?

What is the network address for the host with IP address 192.168.23.61/28?
A . 192.168.23.0
B . 192.168.23.32
C . 192.168.23.48
D . 192.168.23.56
E . 192.168.23.60

Answer: C

Explanation:

convert bit-length prefix to quad-dotted decimal representation, then from it find the number of bits used for subnetting you can find previously calculated number of subnets by separating subnets each having value of last bit used for subnet masking Find that your IP address is in which subnet, that subnet’s first address is network address and last address is broadcast address. Based on above steps the answer is option C.