100-140 Question 196
Single answerA user reports that their workstation cannot connect to the company network. Upon inspection, you notice the device has an IP address of 169.254.10.25. What is the most likely reason for this issue, and how can it be resolved?
- A
The device could not contact a DHCP server and assigned itself an Automatic Private IP Address (APIPA). Restarting the DHCP service or checking the network connection can resolve the issue.
- B
The device has been configured with a static IP address that does not match the network. Reconfiguring the IP settings manually will resolve the issue.
- C
The device is experiencing a hardware failure with its network adapter. Replacing or repairing the adapter will fix the problem.
- D
The DHCP server assigned the 169.254.10.25 address as part of the network's valid IP range. No action is needed.
Show answer and explanation
Correct answer: A
Explanation
A 169.254.x.x address indicates that the device has failed to obtain an IP address from a DHCP server and has assigned itself an Automatic Private IP Address (APIPA). This usually happens when there is no communication with the DHCP server. Checking the network connection, cables, or restarting the DHCP service can often resolve the problem.
- A. Correct.
This is the correct answer. A 169.254.x.x address is an Automatic Private IP Address (APIPA), which a device assigns itself when it cannot contact a DHCP server. To resolve this, the DHCP service or the network connection should be checked and restarted if necessary.
- B. Incorrect.
This is incorrect. A static IP misconfiguration would not result in a 169.254.x.x address. A static IP address must be manually set by a user or administrator, and this address range is reserved for APIPA.
- C. Incorrect.
This is incorrect. A hardware failure with the network adapter could cause connectivity issues, but it would not result in the automatic assignment of a 169.254.x.x address.
- D. Incorrect.
This is incorrect. The 169.254.x.x address range is not assigned by DHCP servers. It is reserved for APIPA and is used only when devices cannot reach a DHCP server.