Cisco Wireless LAN Certification Exam 646-588

Which of the following is used to check for a break in a Cat5 cable?

A. A multimeter
B. A wire crimper
C. An optical tester
D. A punch down tool
Answer: A
Explanation: A multimeter is a device that is used to measure voltages and
resistances in electronic components.70-291 It can also be used to test for continuity in a
wire. A continuity test will indicate if there is a break in the wire.

Incorrect Answers:
A: A wire crimper is used to attach RJ-45 connectors to a cable by using pressure to
press some kind of metal teeth into the inner conductors of the cable.70-296 It is not used to test
for faults in the cable.
C: An optical tester is a device that measures the quality of strength of light signals
passing through an optical cable.646-588
D: A punch down tool is used to insert the wire in the IDC (insulation displacement
connector).

References:
David Groth and Dan Newland, A+ Complete Study Guide (2nd Edition), Sybex,
Alameda CA, 2001, pp. 30-34.
David Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda
CA, 2005, pp. 270, 271-272.
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