You have configured an SNMPv3 user on a Cisco router to allow network monitoring. However, your NMS (Network Management System) cannot collect statistics from the router. A "timeout" error appears when trying to poll SNMP data.
Correct Answer: D
Detailed Explanation: SNMP (Simple Network Management Protocol) is used for network monitoring. In SNMPv3, security enhancements prevent unauthorized access, but if the NMS cannot poll data, the issue is likely port blocking. Why not A (Incorrect SNMP community string)? SNMPv3 uses user-based authentication instead of a community string. Why not B (SNMP agent disabled)? If the SNMP agent was disabled, there would be no response, not a timeout. Why not C (authPriv missing)? SNMPv3 supports different security levels, but even authNoPriv allows data collection. Most firewalls block UDP port 161 to prevent unauthorized SNMP access. The best fix is to allow SNMP traffic only from trusted NMS sources.
This CCNA practice question helps students prepare for Cisco networking certification exams by testing knowledge of network fundamentals, routing, switching, and network security concepts.