CompTIA Network+ (N10-007) — Question 492

A network technician is troubleshooting a PC that cannot access the Internet. However, the PC responds to ICMP echo requests from the same subset. Which of the following is the MOST likely reason the PC cannot communicate externally?

Answer options

• A. The loopback address is being used.
• B. The default gateway is incorrect.
• C. The PC does not have an IP reservation.
• D. The virtual IP has not been configured.

Correct answer: B

Explanation

The most likely reason the PC cannot communicate externally is that the default gateway is set incorrectly, preventing it from reaching outside its local network. The loopback address would not allow for any external communication, but it would not impact local responses to ICMP requests. IP reservations and virtual IP configurations are not relevant to basic Internet connectivity issues.