As per this doc here, it is D. (For C to be correct, it should be like "configure syslog destination" , not "central syslog system") https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/2-1-2/user_guide/b_cisco_dna_center_ug_2_1_2/b_cisco_dna_center_ug_2_1_1_chapter_01010.pdf

What a horrid question, Cisco should be ashamed of themselves for having such a question! I can't find any articles or anything on this.

Selected Answer: C C - let me explain: feature meaning in IT: to include something as part of a product, machine, or system, especially something that makes it better than others of a similar type: The latest software features built-in access to online messaging services. so the QUSTION IS: WHICH PART of the PRODUCT requires network telemetry to be enable: - then Central Syslog makes sense, cause without telemetry there is no need to have Central Syslog ... let me know if you agree

Selected Answer: B What an interesting question indeed lol.... Would have to vote B for this one though. The reason is that per-interface stats usually requires network telemetry to be enabled so that detailed information about traffic flows, interface utilization, errors, and other performance metrics can be gathered from network devices. Also, from the link pasted by jienBoq: https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/2-2-2/user_guide/b_cisco_dna_center_ug_2_2_2/b_cisco_dna_center_ug_2_2_2_chapter_01010.pdf " The NetFlow configuration on the device INTERFACES is completed ONLY when you enable application telemetry on the device."

Selected Answer: C sounds like C is correct https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/2-2-2/user_guide/b_cisco_dna_center_ug_2_2_2/b_cisco_dna_center_ug_2_2_2_chapter_01010.pdf

Selected Answer: B This is a very ambiguous question. I prefer B over the others.

Selected Answer: B B sounds like the right one.

Initially I would go for B, but after checking the documentation and all the other options, I have to agree. SNMP trap notification doesn't need telemetry to be enabled, neither does neighbor discovery, but a central syslog system won't work without telemetry. Interface stats are there, they are always working, it's just that they won't be sent anywhere without telemetry, but that's not the question.

Selected Answer: A https://device.report/manual/9961645 Configure a Span of L2 Traffic On the organization's network, configure a Layer 2 (L2) aggregation switch, or similar, to span a stream of the L2 traffic to the Cisco DNA Traffic Telemetry Appliance. This must be a distribution layer switch (based on a three-layer networking model of access layer, distribution layer, core layer) in order to include traffic and devices from all segments of the access layer. The Cisco DNA Traffic Telemetry Appliance uses the span for traffic analysis and device discovery.

Selected Answer: B B. per-interface stats

Hello, do you have a link or any additional information?

Selected Answer: B B for me...

"central syslog system" - this sounds really dumb, so it can't be a good answer

Selected Answer: B B. per-interface stats

Tricky. I have no docs here. But I am going with per int stats. B. Telemetry isn't based on logs. It's real time statistics from what's happening on the network. This is gathered by the statistics on the networking device.

Selected Answer: D The only feature in this selection that needs a working telemetry infrastructure is "SNMP trap notification". https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/2-2-2/user_guide/b_cisco_dna_center_ug_2_2_2/b_cisco_dna_center_ug_2_2_2_chapter_01010.pdf

what is central syslog system ? remote syslog server collects syslog messages, what does it have to do with telemetry...

Selected Answer: B I did not find any relevant information on this. As I understand what telemetry does (it automatically collects, transmits and measures data from remote sources, using sensors and other devices, and it transmits the data back to a central location) per-interfaces stats could be a good candidate.

Selected Answer: B Eliminate all the ones that are not a "feature" and B looks like the last one standing

Selected Answer: D I am surprised that most of the people associate network telemetry with the interface statistics, which can be viewed in CLI. This is why, IMHO, B is not the best answer (though this information can be forwarded to a centralized system). A is related to CDP/LLDP and does not require network telemetry, so we are left with C and D. C is not a feature, in my opinion, though a central syslog system will require defining it on the network devices, making D the more appropriate answer here. SNMP traps and informs are unsolicited messages coming from the device to a SNMP server (informs require ack while traps do not). There is no way you can process traps without having the network telemetry enabled. It is basically a SNMP message from the agent running on the device to the Central NMS