CompTIA Network+ (N10-008) — Question 850

A network technician is performing tests on a potentially faulty network card that is installed in a server. Which of the following addresses will MOST likely be used during traffic diagnostic tests?

Answer options

• A. 10.10.10.10
• B. 127.0.0.1
• C. 192.168.0.1
• D. 255.255.255.0

Correct answer: B

Explanation

The correct answer is B, 127.0.0.1, which is the loopback address used for testing network interfaces. This address allows the technician to verify if the network card can communicate with itself. The other options represent external or broadcast addresses that would not be suitable for internal diagnostics.