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CompTIA A+ Core 1 - Performance Based Question

Scenario

You are terminating a Cat6 Ethernet patch cable for a workstation installation. Follow the T568B wiring standard and verify signal quality using the provided cable tester results.

Task 1 — Wire Order

Arrange the wires in the correct order for T568B standard (pins 1-8, left to right).

Available Wires:

White/Orange
Orange
White/Green
Blue
White/Blue
Green
White/Brown
Brown

T568B Pin Assignment:

Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8

Task 2 — Crosstalk Analysis

Review the cable tester results below and identify which wire pair shows excessive crosstalk.

Cable Tester Results - Near-End Crosstalk (NEXT):

Pair TestedMeasured NEXT (dB)
Pair 1–272.0
Pair 3–668.5
Pair 4–532.4
Pair 7–869.8

Which wire pair indicates excessive crosstalk requiring re-termination?