N10-005 · Question #430
N10-005 Question #430: Real Exam Question with Answer & Explanation
The correct answer is B: TX/RX cables reversed. Since cabling was physically moved during maintenance, the most likely cause is that the transmit (TX) and receive (RX) cables were accidentally swapped when reconnected - this is called a crossover error on a straight-through connection, and it would immediately break the link.
Question
Options
- ABroadcast storm
- BTX/RX cables reversed
- CMismatched MTU
- DIncorrect routing table
Explanation
Since cabling was physically moved during maintenance, the most likely cause is that the transmit (TX) and receive (RX) cables were accidentally swapped when reconnected - this is called a crossover error on a straight-through connection, and it would immediately break the link. Broadcast storms (A) are caused by switching loop issues, not cable moves. Mismatched MTU (C) typically causes intermittent performance issues, not total loss. An incorrect routing table (D) is a software/configuration issue unrelated to physically moving cables.
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