What is the loopback IP address?
A.
127.0.0.1
B.
loopback
C.
255.255.255.1
D.
0.0.0.0
Explanation:
Difficulty: Easy
Section Reference: Categorizing IPv4 Addresses
The range for Class A is 0127. However, the 127 network number isnt used by hosts as a logical IP address.
Instead, this network is used for loopback IP addresses, which allow for testing.