N10-009 - Network Troubleshooting - Section 5.2
Troubleshoot common cable connectivity issues and explain the use of the appropriate diagnostic tools and physical-layer indicators.
Diagnose physical-layer faults: attenuation, crosstalk, EMI, incorrect pinout (straight-through versus crossover), open/short pairs, and transceiver or duplex/speed mismatches. Select the right physical tool - cable tester, toner probe, OTDR, or loopback adapter - and read interface counters such as CRC errors and runts to localise the failing segment.
Cable faultsCrosstalk and attenuationDuplex/speed mismatchCable tester and toner
More in this domain
Back to all Network Troubleshooting objectives, or the N10-009 cert hub.
Examworthy is not affiliated with or endorsed by CompTIA. Original, blueprint-aligned practice material only.