100-140 Question 195
Single answerA user reports that their computer cannot access the network. Upon investigation, you find the computer has an IP address starting with 169.254.x.x. What is the most likely reason for this, and how can it be resolved?
- A
The computer has received a self-assigned IP address because it could not reach a DHCP server. Restarting the DHCP service or reconnecting to the network could resolve the issue.
- B
The computer has a static IP address set manually. Changing it to DHCP mode will resolve the issue.
- C
The computer is configured with the wrong DNS server settings. Correcting the DNS settings will resolve the issue.
- D
The computer's network adapter is physically damaged. Replacing the adapter will resolve the issue.
Show answer and explanation
Correct answer: A
Explanation
When a computer cannot obtain an IP address from a DHCP server, it assigns itself an Automatic Private IP Address (APIPA) in the range of 169.254.x.x. This typically indicates an issue with the DHCP server, network configuration, or connectivity. Resolving the issue often involves ensuring the DHCP server is operational and the computer is correctly connected to the network.
- A. Correct.
This is correct. A 169.254.x.x address is a self-assigned IP (APIPA) that occurs when a device cannot contact a DHCP server. Restarting the DHCP service or reconnecting to the network can help resolve the issue.
- B. Incorrect.
This is incorrect. A static IP address would not fall into the 169.254.x.x range. This issue is not related to static IP configuration.
- C. Incorrect.
This is incorrect. DNS settings are unrelated to the computer obtaining a 169.254.x.x address, which is a result of DHCP failure.
- D. Incorrect.
This is incorrect. A damaged network adapter would prevent connectivity entirely, but it would not specifically cause a 169.254.x.x IP address.