SNMP traps in Cisco NFVIS (and in SNMP generally):
Areunsolicited notifications
Sent from the NFVIS deviceto the SNMP manager
Indicate alarms, changes, or significant operational events
Donotrequire polling
Examples:
Disk failures
VM crashes
Host status changes
Resource alarms
Why the others are wrong:
Adescribes SNMP monitoring (done by the manager with GET requests)
BSNMP cannotcontrolhost activities
DSNMP GET retrieves a variable, but traps sendunsolicitednotifications
Thus, the correct answer isC.
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