CISSP Practice question #253

If you see any IPv4 address in the 127.0.0.0/8 range, what type of IPv4 address is that?
A: Loopback.
B: Link-local.
C: Private.
D: Public.

CBK 4: Communication and Network Security
Source: ThorTeaches.com practice tests – https://www.udemy.com/user/thorpedersen/

Answer


A: IPv4 network standards reserve the entire 127.0.0.0/8 address block for loopback purposes. That means any packet sent to one of those 16,777,214 addresses (127.0.0.1 through 127.255.255.254) is looped back. IPv6 has just a single address, ::1.

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