Hello ITPro.TV... Was wondering if you could help me wrap my head around this practice exam question I ran across while using the transcender test provided with the service. I've done some research on the differences between auth/noauth/& priv, but this question seems to contradict itself.
*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*
So this wasn't really covered in the course. The three commands that were covered in the course were as follows:
snmp-server view CustomViewName 126.96.36.199.188.8.131.52.184.108.40.206.2.7 included <-- Create view
snmp-server group CustomGroupName v3 auth read CustomViewName <--Create group and associate with view
snmp-server user CustomUserName CustomGroupName v3 auth md5 cisco123 <--Create user and associate with group
I'm not really sure what the command "snmp-server host x.x.x.x" even does, but I do know that you have to use the word "informs" in order to adhere to the requirement "the reciept of which will be acknowledged by the receiver". So B is out right away. Then I start to focus on the only real difference which is noauth, 2c, or authpriv..
Well, I see also in the question that it is a requirement to authenticate by user, so version 2c is out. Now we are left considering only option A and option D. or noauth vs authpriv.
My understanding of noauth is that it doesn't require authentication or privacy (encryption), so that can't be it... My understanding of authpriv is that it requires not only authentication, but also privacy. So option D can't be correct because no clear text notifications would be sent if the entire exchange is encrypted....
Where did I go wrong in my logic here? What is the snmp-server host x.x.x.x command for compared to what was covered in the class?