100-140 · Question #25
What does a 169.x.x.x IP address indicate on a Windows device?
The correct answer is C. The device has failed to obtain an IP address from a DHCP server. A 169.254.x.x address is an APIPA address that Windows self-assigns when it cannot reach a DHCP server. This address range is non-routable and indicates a DHCP failure.
Question
Options
- AThe device has a static IP address
- BThe device is in sleep mode
- CThe device has failed to obtain an IP address from a DHCP server
- DThe device is connected to a VPN
How the community answered
(27 responses)- A7% (2)
- B4% (1)
- C70% (19)
- D19% (5)
Why each option
A 169.254.x.x address is an APIPA address that Windows self-assigns when it cannot reach a DHCP server. This address range is non-routable and indicates a DHCP failure.
Static IP addresses are manually configured and can be any valid address in the assigned subnet, not the reserved 169.254.x.x APIPA range.
Sleep mode does not affect IP address assignment; the network adapter retains or renegotiates its address upon wake, and sleep mode has no association with the 169.254.x.x range.
Windows uses Automatic Private IP Addressing (APIPA) to self-assign an address in the 169.254.0.0/16 range when a DHCP server is unreachable or no response is received. This allows limited local network communication but no internet access. The 169.254.x.x address is the diagnostic signal that DHCP negotiation failed.
VPN connections assign a virtual IP address from the VPN server's address pool, which is entirely unrelated to the APIPA 169.254.x.x range.
Concept tested: APIPA address assignment on DHCP failure
Source: https://learn.microsoft.com/en-us/troubleshoot/windows-client/networking/169-ip-address-apipa
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