Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 922

A network monitoring system uses SNMP polling to record the statistics of router interfaces. The SNMP queries work as expected until an engineer installs a new interface and reloads the router. After this action, all SNMP queries for the router fail. What is the cause of this issue?

Answer options

• A. The SNMP interface index changed after reboot.
• B. The SNMP server traps are disabled for the link state.
• C. The SNMP server traps are disabled for the interface index.
• D. The SNMP community is configured incorrectly.

Correct answer: A

Explanation

The correct answer is A because rebooting the router can cause the SNMP interface index to change, resulting in the monitoring system being unable to query the new index. Options B and C discuss SNMP traps, which are not the issue here, while option D addresses a community string configuration which is unrelated to the interface index problem after a reboot.