CompTIA Network+ (N10-009) — Question 236

A network administrator performed upgrades on a server and installed a new NIC to improve performance. Following the upgrades, users are unable to reach the server. Which of the following is the most likely reason?

Answer options

• A. The PoE power budget was exceeded.
• B. TX/RX was transposed.
• C. A port security violation occurred.
• D. An incorrect cable type was installed.

Correct answer: C

Explanation

The correct answer is C because a port security violation can prevent access to the network after changes are made, such as installing a new NIC. The other options are less likely; for instance, exceeding the PoE power budget typically affects powered devices, TX/RX transposition would likely lead to connectivity issues rather than complete inaccessibility, and using an incorrect cable type would usually produce a different kind of connectivity problem.