CompTIA Network+ (N10-007) — Question 65

A technician is investigating an issue related to a single host that is unable to access the Internet. The technician records the following information: Host IP
169.254.1.10. The network IP address range on the DHCP server is 10.10.5.2-10.10.5.250 with a default gateway 10.10.5.1 and a DNS of 8.8.8.8. Which of the following should the technician perform to troubleshoot the issue?

Answer options

• A. Change the IP scope on the DHCP server to a public IP address range.
• B. Perform a traceroute command to identify the router that is not functioning.
• C. Verify the host has physical connectivity and is on the correct VLAN.
• D. Configure the DNS address in the DHCP scope to a 10.10.5.0/24 address.

Correct answer: C

Explanation

The correct answer is C because the host's IP address of 169.254.1.10 indicates that it is using an Automatic Private IP Addressing (APIPA) address, which suggests it cannot communicate with the DHCP server. Verifying physical connectivity and VLAN assignment is essential to ensure the host is correctly connected to the network. The other options do not address the underlying issue of the host not obtaining an IP address from the DHCP server.