Cisco Certified Internetwork Expert (CCIE) Practice Test

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What SNMPv3 command disables descriptive error messages?

snmp-server usm cisco
snmp-server inform
snmp-server infindex persist
snmp-server trap link switchover

The correct answer is: snmp-server usm cisco

Disabling descriptive error messages in SNMPv3 can be achieved through specific configurations in the SNMP engine's User-based Security Model (USM). The command relevant to this action is the one that modifies the behavior of error message reporting. The choice that correctly addresses the requirement to disable descriptive error messages is the command that utilizes USM features. When the command is executed in this context, it can limit the information that is disclosed in error messages. This is important for security reasons, as detailed error messages could potentially expose sensitive information about the network or devices. Alternatives like the command related to informing or trapping do not focus on the descriptive aspects of error messages or managing how error conditions are reported, which is the primary goal of the inquiry. These commands typically involve the handling of notifications and traps rather than adjusting the verbosity or detail of error messages presented by the SNMP agent. Therefore, focusing on the USM-related command aligns best with the requirement to control error messaging behavior effectively.