Cisco Specialist Certification Exam 650-059

Which of the following is used to test for continuity in a copper cable? (Choose all
that apply)

A. A multimeter
B. A wire crimper
C. An optical tester
D. Time-Domain Reflectometer
Answer: A, D
Explanation: A multimeter is a device that is used to measure voltages and
resistances in electronic components.HP0-W02 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. A Time-Domain
Reflectometer (TDR), which is also called a cable tester, is a device that sends out a
signal and measures the time it takes for the signal to return.jn0-521 A break in the cable
will cause the signal to return prematurely and will indicate the presence of, and the
distance to, a break in the cable.

Incorrect Answers:
B: 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.650-059 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.

References:
David Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda
CA, 2005, pp. 12, 439