What is the loopback IP address?

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

Categorizing IPv4 Addresses

The range for Class A is 0–127. However, the 127 network number isn’t used by hosts as a logical IP address. Instead, this network is used for
loopback IP addresses, which allow for testing.