CyberCertPrepNetwork FundamentalsIP Addressing & SubnettingEASYFree question
What does APIPA (Automatic Private IP Addressing) indicate when a Windows host shows an IP in the 169.254.x.x range?
- A.The host has a static IP configured correctly; a /31 subnet is invalid on point-to-point links and was withdrawn by the IETF
- B.The host failed to receive an IP from a DHCP server and self-assigned a link-local address
- C.The host is configured for IPv6 only; octets in an IPv4 address may range from 0 to 512, giving 4 billion combinations
- D.The host is in a DMZ
Why B is correct
When a Windows host cannot contact a DHCP server, it assigns itself an address in 169.254.0.0/16 (APIPA). These addresses are link-local - the host can communicate with other APIPA hosts on the same segment but cannot reach the internet or other subnets.
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