QUESTION: 21

What are two capabilities of the Cisco Network Assurance Engine? (Choose two.)

It validates that devices comply with network security policies.
It predicts the impact of changes to the network.
It predicts the network load on a data center.
It ensures that network performance meets an SLA.
It verifies the speed of network packet flows by using telemetry.

Answer(s): A,B

Explanation:

With Cisco Network Assurance Engine operators can:
ג— Predict the impact of network changes: Proactively verify changes made to the network for correctness to drive increased change agility while significantly reducing the risk of network failures induced by human error.
ג— Verify network-wide behavior: Continuously analyze and verify the dynamic state of the network against intent and policy to ensure connectivity and eliminate potential network outages and vulnerabilities before any business impact occurs.
ג— Ensure network security policy and compliance: Ensure network security policies and check for compliance against business rules to reduce security risk and achieve provable continuous compliance by policy and state.

Reference:

https://www.cisco.com/c/en/us/products/collateral/data-center-analytics/network-assurance-engine/at-a-glance-c45-740230.html

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QUESTION: 22

What is an advantage of streaming telemetry over SNMP?

on-change traps sent to a receiver
periodic push-based subscription messages
periodic polling of the device status
MD5-based authentication on polling

Answer(s): B

Explanation:

A key difference between SNMP and streaming telemetry is the method of data collection.
SNMP polls network devices to collect information or set configuration properties. The approach, while generally reliable, can also lead to delays as long as five to
10 minutes before information is received from a device-veritable eons in today's networks. Streaming telemetry flips and streamlines the process. Instead of the pull model used by SNMP, streaming telemetry uses a push model to continuously stream data from network devices to one or more network monitoring systems.

Reference:

https://www.networkworld.com/article/3575837/streaming-telemetry-gains-interest-as-snmp-reliance-fades.html

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QUESTION: 23

APIC EPG Resolution Immediacy is set to "Immediate".
Which statement is true about the Deployment Immediacy for VMM domains associated to EPGs?

If "On demand" is selected, the policy is programmed in the hardware only when the first packet is received through the data path.
If "Immediate" is selected, the policy is programmed in the hardware as soon as the leaf is booted.
The "Immediate" and "On demand" options require a port group to be created on the VDS.
If "On demand" is selected, the policy is programmed in the hardware only when the APIC detects a VM created in the EPG.

Answer(s): A

Explanation:

It is important to understand what those options are and how are they going to impact during deployment. Following table lists these options, their description and recommendation for Cisco AVS.

* Immediate - Specifies that the policy is programmed in the hardware policy CAM as soon as the policy is downloaded in the leaf software.
* On Demand - Specifies that the policy is programmed in the hardware policy CAM only when the first packet is received through the data path. This process helps to optimize the hardware space.

Reference:

https://community.cisco.com/t5/data-center-and-cloud-knowledge/apic-policy-deployment-and-resolution-immediacy-for-avs-vmm/ta-p/3134812

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QUESTION: 24

Refer to the exhibit. All switches are configured with the default OSPF priority. Which configuration should be applied to ensure that the SW2 Cisco Nexus switch controls the LSA floods and advertises the network to the remaining nodes in the OSPFv2 area?

SW2# configure terminal SW2 (config)# interface ethernet 1/1 SW2 (config-if)# ip ospf priority 255
SW2# configure terminal SW2 (config)# interface ethernet 1/1 SW2 (config-if)# ip ospf priority 1
SW2# configure terminal SW2 (config)# router ospf 1 SW2 (config-router)# router-id 10.10.10.22
SW2# configure terminal SW2 (config)# interface ethernet 1/1 SW2 (config-if)# ip ospf priority 0

Answer(s): A

Explanation:

Reference:

https://www.cisco.com/c/m/en_us/techdoc/dc/reference/cli/nxos/commands/ospf/ip-ospf-priority.html

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