Which of the following is the IPv4 link-local address range?

Which of the following is the IPv4 link-local address range?

• A. FE80::/10
• B. 169.254.0.0/16
• C. 127.0.0.0/8
• D. 10.0.0.0/8

Answer: (B)

IPv4 link-local addresses are used for automatic address configuration on a local network segment when a device can’t obtain an address from a DHCP server. They’re scoped to the local link and aren’t routable beyond it. The range 169.254.0.0/16 is reserved for this purpose, often referred to as APIPA, allowing devices on the same network to communicate without a DHCP server. The other options correspond to different concepts: FE80::/10 is an IPv6 link-local prefix, not IPv4; 127.0.0.0/8 is the loopback range for the local host; 10.0.0.0/8 is private IPv4 space used inside organizations, not link-local.

IPv4 link-local addresses are used for automatic address configuration on a local network segment when a device can’t obtain an address from a DHCP server. They’re scoped to the local link and aren’t routable beyond it. The range 169.254.0.0/16 is reserved for this purpose, often referred to as APIPA, allowing devices on the same network to communicate without a DHCP server. The other options correspond to different concepts: FE80::/10 is an IPv6 link-local prefix, not IPv4; 127.0.0.0/8 is the loopback range for the local host; 10.0.0.0/8 is private IPv4 space used inside organizations, not link-local.