Cisco CCNA mock exam questions sample test – Question 403

.Which of the following commands configures an SNMP host to authenticate a user by username and send clear text notifications, the receipt of which will be acknowledged by the
receiver?

A. Router(config)# snmp-server host 192.168.5.5 informs version 3 noauth public
B. Router(config)# snmp-server host 192.168.5.5 traps version 3 auth public
C. Router(config)# snmp-server host 192.168.5.5 informs version 2c public
D. Router(config)# snmp-server host 192.168.5.5 informs version 3 authpriv public


Correct Answer: A

Explanation:
The command snmp-server host 192.168.5.5 informs version 3 noauth CISCO will configure the host to authenticate a user by username and send clear text notifications. The
receiver will then acknowledge receipt of the notification. The keyword informs indicates that an inform message type will be used. Unlike a trap, an inform message is acknowledged
by the receiver.
The version 3 keyword indicates that version 3 is in use, which is the ONLY version that supports authentication and encryption. Finally, the noauth keyword specifies authentication by
username only and no encryption.
The command snmp-server host 192.168.5.5 traps version 3 auth public configures the host to send traps rather than informs.
The command snmp-server host 192.168.5.5 informs version 2c public specifies version 2c, which only support community string-based authentication.
The command snmp-server host 192.168.5.5 informs version 3 authpriv public specifies the keyword authpriv, which indicates encryption will be used and authentication based on
HMAC-MD5 or HMAC-SHA algorithms.
Objective:
Infrastructure Management
Sub-Objective:
Configure and verify device-monitoring protocols
References:
Configuring SNMP Support > Understanding SNMP > SNMP Versions
Cisco IOS Network Management Command Reference > snmp-server engineID local through snmp trap link-status > snmp-server host