CompTIA A+ Core 2 (220-1002) — Question 472

A technician is working on a computer that has the following symptoms:
* Unable to access the Internet
* Unable to send email
* Network connection (limited or no connectivity)
The technician runs hardware diagnostics on the computer and verifies the computer's NIC is functioning correctly. The technician attempts to access the Internet and receives the message: page cannot be displayed. The technician runs a command to verify the computer network settings and sees the following information:

IP address: 192.168.0.100 -

Subnet mask: 255.255.255.0 -

Gateway: 192.168.0.1 -

DNS: 192.168.0.1 -
The technician confirms other computers on the network can access the Internet.
Which of the following is MOST likely causing the issues?

Answer options

Correct answer: D

Explanation

The most likely cause of the issues is the proxy settings (D), as incorrect proxy configurations can prevent Internet access while other devices operate normally. Rogue antivirus (A), firewall rule (B), and ransomware (C) are less likely because they typically would affect more than one device or manifest with different symptoms.