A user reports sporadic network outages. The user tells the administrator it happens after approximately 20 minutes of work on an application. The administrator should begin troubleshooting by…

The correct answer is D. The patch cable. The bottom-up troubleshooting approach starts at the physical layer (Layer 1). A faulty or damaged patch cable is a common cause of intermittent connectivity - heat buildup, a loose connector, or a bent pin can cause a cable to fail under sustained use. Checking the patch cable…

Network troubleshooting

Question

A user reports sporadic network outages. The user tells the administrator it happens after approximately 20 minutes of work on an application. The administrator should begin troubleshooting by checking which of the following?

Options

AThe IDS server logs
BThe DNS resolution time
CThe firewall's blocked logs
DThe patch cable

How the community answered

(69 responses)

A
3% (2)
B
13% (9)
C
7% (5)
D
77% (53)

Explanation

The bottom-up troubleshooting approach starts at the physical layer (Layer 1). A faulty or damaged patch cable is a common cause of intermittent connectivity - heat buildup, a loose connector, or a bent pin can cause a cable to fail under sustained use. Checking the patch cable is the simplest, fastest, and cheapest first step. IDS logs, DNS resolution times, and firewall block logs are higher-layer diagnostics and would not explain a pattern of outages tied to sustained physical use.

Topics

#sporadic outages#patch cable#physical layer troubleshooting#intermittent connectivity

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