CompTIA Network+ N10-006 Q114

A technician recently ran a 20-meter section of CAT6 to relocate a control station to a more central area on the production floor. Since the relocation, the helpdesk has received complaints about intermittent operation. During the troubleshooting process, the technician noticed that collisions are only observed on the switch port during production. Given this information, which of the following is the cause of the problem?

A. Distance limitation
B. Electromagnetic interference
C. Cross talk
D. Speed and duplex mismatch

Correct Answer: B
Section: Troubleshooting

Explanation:
When cables are installed near electrical devices the signal within the cable might become corrupt. The cable connecting the control station to the switch port is now surrounded by the production machinery. Electromagnetic interference could occur when the machinery is running, causing the intermittent operation.