Troubleshooting Cisco Data Center Infrastructure (DCIT) — Question 22

A Cisco Nexus Series interface is errdisabled with the error message "DCX-No ACK in 100 PDUs". What is the cause of this error?

Answer options

• A. The host has not responded to the Control Sub-TLV DCBX exchanges of the switch.
• B. The acknowledgement number in the server response has not incremented for 100 exchanges.
• C. Cisco Discovery Protocol is disabled on the switch.
• D. LLDP is disabled on the switch.

Correct answer: B

Explanation

The correct answer is B because the error indicates that the acknowledgement number has not incremented, signaling a lack of response after 100 PDUs. Option A is incorrect as it refers to the host's lack of response to DCBX, which is not the specific cause of this error. Options C and D are also incorrect as they pertain to the status of Cisco Discovery Protocol and LLDP, which are unrelated to the stated error message.