CompTIA Network+ (N10-008) — Question 23

A network is experiencing a number of CRC errors during normal network communication. At which of the following layers of the OSI model will the administrator
MOST likely start to troubleshoot?

Answer options

• A. Layer 1
• B. Layer 2
• C. Layer 3
• D. Layer 4
• E. Layer 5
• F. Layer 6
• G. Layer 7

Correct answer: B

Explanation

The correct answer is Layer 2 because CRC errors are typically associated with issues in the data link layer where frame integrity is maintained. Other layers, while important, do not directly deal with the detection and correction of such errors, which are specific to the data link layer's operation.