CompTIA Server+ (SK0-005)TroubleshootingEasy
A technician is troubleshooting a server that is experiencing intermittent network connectivity issues. The server is connected via two Ethernet cables to separate switch ports. Upon inspection, one of the cable's latching clips is broken, and the cable feels loose in its port. The network interface card (NIC) link lights are sometimes off for that port. Which of the following is the MOST likely cause of the intermittent connectivity?
- AA faulty network cable.
- BIncorrect IP address configuration on the server.
- COutdated NIC drivers.
- DOverheating CPU on the server.
Show answer & explanationAnswer & explanation
Correct answer: A. A faulty network cable.
A broken latching clip and a loose cable, combined with intermittent link lights, strongly indicate a physical layer issue with the network cable itself. This would directly lead to intermittent connectivity.
Why the other options are wrong
- B. Incorrect IP configuration would likely cause consistent connectivity failure, not intermittent, and wouldn't explain physical cable issues.
- C. Outdated drivers might cause performance issues or complete failure, but not usually intermittent problems directly linked to a physical cable's loose connection.
- D. CPU overheating typically leads to system instability, slowdowns, or shutdowns, not specifically intermittent network issues tied to a loose cable.
Physical Layer Network Troubleshooting
Troubleshooting network connectivity often starts with checking physical components like cables, connectors, and link lights, as these are common points of failure.
- Loose or damaged cables can cause intermittent connectivity.
- Link lights provide immediate visual feedback on physical connection status.
- Physical layer issues must be resolved before moving to higher-layer troubleshooting.
Memory trick: Always check the physical connection first; a loose cable can't be ignored.