The question involves troubleshooting an issue where the command output is initially unknown, but subsequent executions show diagnostic information for an interface (1/1/X). The task is to identify appropriate diagnostic commands to troubleshoot the issue.

Analysis of Options:

Option A (diag interface transceiver al):Incorrect syntax; “al” is not a valid parameter.

Option B (diag interface 1/VX transceiver all):Incorrect syntax; “1/VX” is not a valid interface format.

Option C (diag cable-diagnostic 1/1/X):Correct. This command runs a cable diagnostic test (TDR) on interface 1/1/X to check for cable faults, such as opens or shorts.

Option D (diag cable 1/1/X):Incorrect; “diag cable” is not a valid AOS-CX command.

Option E (diag 1/1/X transceiver all):Correct. This command displays detailed transceiver information, including status, errors, and signal quality, useful for diagnosing interface issues.

Why C and E are Correct:The diag cable-diagnostic 1/1/X command is used to perform TDR tests to identify cable faults, which could cause connectivity issues. The diag 1/1/X transceiver all command provides detailed transceiver diagnostics, such as power levels, errors, or hardware issues, helping pinpoint problems with the interface or connected device. These commands align with AOS-CX troubleshooting workflows for physical layer issues.

Relevance to Certification Objectives:

Troubleshooting (10%):Involves using diagnostic commands to troubleshoot campus network issues.

Connectivity (9%):Includes identifying problem areas in device deployment, such as cabling or transceiver issues.