AR468 seems to have wrong distractors.

[yardbyrd]

The correct answer it not available to choose.  The correct answer should be "120 on R3 E0/1".  Explanation of configuring delay values can be found here: 

https://www.cisco.com/c/en/us/support/do...-893029462

[help_desk]

Can you please clarify why you think the answer should be "120 on R3 E0/1".

[yardbyrd]

Can you please clarify why you think the answer should be "120 on R3 E0/1".

Delay is cumulative from the  starting ip, in this case from 10.1.2.2 to 10.1.2.3 and 10.1.2.4, then from 10.1.3.3 and 10.1.3.4 ending at 10.1.3.X. In our question you're viewing the "total" delay from r2 to server 10.1.3.X.  When you configure delay, it is configured int 10s(tens) or microseconds and is done on an individual interface on a specific router.  Based upon the information given, we can assume that the delayon R2, E0/0 is set to 100, or 100 tens of microseconds, which would be a delay of 1000 microseconds from R2 to R3 or R4.  

The delay from R3, e0/1 to Server 10.1.3.X is set to 100, or 100 tens of microseconds. which is a delay of 1000 microseconds from r3 to server 10.1.3.X.  This gives us a total of 2000 microseconds delay from R2, E0/0 to Server 10.1.3.X via R3.

The delay from R4, e0/1 to Server 10.1.3.X is set to 120, or 120 tens of microseconds. which is a delay of 1200 microseconds from r4 to server 10.1.3.X.  This gives us a total of 2200 microseconds delay from R2, E0/0 to Server 10.1.3.X via R4.

To make the total delay match for both paths, we'll need to set the delay to "120 on R3 E0/!".  This will give us a delay of 1200  microseconds from R3 to server 10.1.3.X.  This in turn will give us a total delay of 2200 microseconds from R2 to server 10.1.3.X via R3.

Please refer to the link in my above post for further clarification.  You can also google the text of the question to see a more accurate list of the distractors(possible answers) for the question.

Thank You.
YardByrd

[help_desk]

The question has been corrected. Thank you for the detailed explanation. We appreciate it.