The range 127.0.0.0 - 127.255.255.255 represents the local host.

• A. Multicast
• B. Public networks
• C. Local host
• D. Loopback

Answer: (D)

Traffic sent to 127.0.0.0/8 is meant to stay on the same host; these are loopback addresses. They are reserved by the networking standards so that software on the machine can communicate with itself, testing the network stack or interprocess communication without sending packets onto any network. The most familiar loopback address is 127.0.0.1, but the entire 127.0.0.0/8 range serves this purpose, all of which loop back to the local host. This is different from multicast addresses (which are used to deliver packets to multiple hosts on a network) or public network addresses (which are routable on the internet). So the correct concept is loopback, not an external or multicast address.