SK0-005 Question #198: Real Exam Question with Answer & Explanation

The correct answer is A: Rollover. To wire a Cat 5 cable into a serial cable, the administrator should use a rollover wiring type.

Server administration

Question

An administrator is wiring some Cat 5 cable into a serial cable. Which of the following wiring types should the administrator use?

To wire a Cat 5 cable into a serial cable, the administrator should use a rollover wiring type.

Common mistakes.

B. Crossover cables are used to connect two devices of the same type directly (e.g., PC-to-PC, switch-to-switch) by crossing transmit and receive pairs, which is not suitable for a serial console connection.
C. EIA 568A on both ends describes a straight-through cable, which is used for connecting dissimilar network devices but not for serial console connections where pin reversal is required.
D. Straight-through cables connect dissimilar devices (e.g., computer to switch) without crossing internal wire pairs, which is incorrect for the pin-reversal required in a serial console connection.

Concept tested. Network cable types - Rollover vs. Crossover

Reference. https://www.cisco.com/c/en/us/td/docs/routers/access/cisco_2600_series/hardware/installation/guide/2600hig/26cab.html

#Networking cables#Console cables#Rollover wiring#Serial communication

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