Take this as you will, but this is how I see it. The correct answer  is "Modify the source through the 'ip flow-export source loopback 1' command", as indicated for the reasons below.

A. Wrong, Loopback 2 already has an address as shown in the output, 172.16.1.1
B. Wrong, Does not need to be public address unless leaving your AS.
C. Correct, Loopback 2 is shutdown as indicated the (Unknown) next to the source ip under “show ip flow export”.  Assuming that Loopback 1 is not shutdown and has an IP address then C is the correct answer.
D. Exports happen even without the ip flow egress command on the loopback

We're using DNA Center so obviously we're managing more than just the device "WLC-5520".  If ntp was wrong on the DNA Center then we'd be receiving errors from more than just the one WLC.  The question states "NTP is configured across the network infrastructure and Cisco DNA Center" so "Check and configure NTP on the WLC..." isn't the answer.  Observe the first suggested action in the exhibit:

 "1 If NTP is enabled, check whether the NTP server are reachable from the DNA Center and the WLC."

Thus, the foregone conclusion is that the correct answer is "check and resolve reachability between the WLC and the NTP server".

Thanks again for your consideration.

BTW, I tried to post a clearer image of the exhibit but I don't have a site to host the image.

The correct answer should be "IPv6 Prefix Guard".

IPv6 Prefix Guard is used on ingress interfaces to deny access to traffic that has a correct address but that is not topologically correct. The feature discovers ranges of addresses that have been assigned to a link and blocks any traffic sourced with an address outside that range, ensuring that traffic is sourced from its assigned location.

https://www.cisco.com/c/en/us/td/docs/sw...%20command.

https://www.cisco.com/c/en/us/td/docs/io...20gleaning.

This question is testing our knowledge of regular expressions. 

The correct list of distractors are:

- Replace as-path access-list 1 with the ip as-path access-list 1 permit ^300$ command  <---correct answer
- Replace as-path access-list 1 with the ip as-path access-list 1 permit _300_ command
- Replace as-path access-list 1 with the ip as-path access-list 1 permit ^300_ command
- Replace as-path access-list 1 with the ip as-path access-list 1 permit ^300_ command

The ^300$ regular expression ensures that the route’s AS-PATH begins and ends with 300, meaning the route originated from AS300.

I finally passed the Encore exam Friday. Most of the questions was spot on, although about 10 of the questions I had never seen. All of the labs were spot on. There should be no issue passing if you hone in and the questions and build all of the labs. I would suggest using Cisco Modeling Labs since it is free now. Good Luck!

The ip tacacs source-interface should be Gi0/0 and not Gi0/1 because as indicated in the diagram, the tacacs server is hanging off of Gi0/0.  And of course we should have "ip vrf forwarding CompanyA".

In the initial configuration both class-maps are calling the same access-list.  Thus with first in/first out rule all traffic matching acl 100 is policed by CM_ROUTING  at 1Mbps and traffic matching acl 100 never gets to see Class-map CM-MGMT.  We need to delete acl 100 and recreate with just the BGP and OSPF lines. We also need to create acl 101 to permit Telnet and SSH

Afterwards, we need to remove the "match access-group 100" from class-map CM-MGMT and add "match access-group 101" 

Now class-map CM-MGMT is policing telnet and ssh at 500 kbps while CM-ROUTING is only policing BGP and OSPF at 1Mbps.

You also need to change the service policy from "output" to "input".

Thank you for your consideration,

yardbyrd

We will be adding many new questions to the ENCOR product in the coming days. Explanations will be added later. Thank you for your patience.

Reference: https://www.oreilly.com/library/view/mpls-configuration-on/1587051990/1587051990_ch01lev1sec6.html

Special Outgoing Label Types
LSRs perform the operation of label swapping, imposition, or disposition depending on their location in the MPLS domain. In certain cases, the incoming label maps to special outgoing labels that define the operation to be performed at the upstream LSR or router. These labels are propagated by the downstream LSR during label distribution to the upstream LSR. The following outlines the types of outgoing labels that can be associated with a packet:

• Untagged— The incoming MPLS packet is converted to an IP packet and forwarded to the destination (MPLS to IP Domain transition). This is used in the implementation of MPLS VPN (discussed in Chapter 3).
  
• Implicit-null or POP label— This label is assigned when the top label of ...
  

Question: What is the function of the endpoint of a network? 

Answer should be: Allows a user to record data and transmit to a file server