NM CID ES-3 Practice Questions - New Mexico CID ES-3 Low Voltage Special Systems (Under 50 Volts) Examination Exam

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A copper certification tester reports a wiremap failure with pairs 2 and 3 reversed on one end. The usual field cause is:

An OTDR ghost from a dirty fiber connector Excessive NEXT from a nearby 70-volt speaker One end terminated T568A and the other T568B A missing communications primary protector

Correct Answer:

One end terminated T568A and the other T568B

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