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Cisco 300-620 Practice Test - Questions Answers, Page 8
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Question 71
What happens to the traffic flow when the Cisco ACI fabric has a stale endpoint entry for the destination endpoint?
The leaf switch does not learn the source endpoint through data plane learning.
The leaf switch drops the traffic that is destined to the endpoint.
The leaf switch floods the traffic to the endpoint throughout the fabric.
The leaf switch sends the traffic to the wrong destination leaf.
Reference:
https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2019/pdf/BRKACI-2641.pdf
Question 72
A network engineer demonstrates Cisco ACI to a customer. One of the test cases is to validate a disaster recovery event by resetting the ACI fabric to factory and then restoring the fabric to the state it was in before the event. Which setting must be enabled on ACI to export all configuration parameters that are necessary to meet these requirements?
enabled AES encryption
generated a tech-support file
encrypted export destination
enabled JSON format export
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/kb/b_KB_Using_Import_Export_to_Recover_Config_States.html
Question 73
Which Cisco APIC configuration prevents a remote network that is not configured on the bridge domain from being learned by the fabric?
enable Limit IP Learning to Subnet
enable Unicast Routing
enable IP Data-plane Learning
enable ARP Flooding to BD
Reference:
https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centricinfrastructure/white-paper-c11-739989.html
Question 74
An engineer must advertise a selection of external networks learned from a BGP neighbor into the ACI fabric. Which L3Out subnet configuration option creates an inbound route map for route filtering?
External Subnets for the External EPG
Shared Route Control Subnet
Import Route Control Subnet
Shared Security Import Subnet
Question 75
An engineer must set up a Cisco ACI fabric to send Syslog messages related to hardware events, such as chassis line card failures. The messages should be sent to a dedicated Syslog server. Where in the Cisco APIC should the policy be configured to meet this requirement?
uni/tn-common/monepg-default
uni/infra/monifra-default
uni/fabric/monfab-default
uni/fabric/moncommon
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/acifundamentals/Cisco-ACI-Fundamentals-401/Cisco-ACI-Fundamentals-401_chapter_01100.html
Question 76
The existing network and ACI fabric have been connected to support workload migration. Servers will physically terminate at the Cisco ACI, but their gateway must stay in the existing network. The solution needs to adhere to Cisco’s best practices. The engineer started configuring the relevant Bridge Domain and needs to complete the configuration. Which group of settings are required to meet these requirements?
L2 Unknown Unicast: Hardware Proxy
L3 Unknown Multicast Flooding: Flood
Multi Destination Flooding: Flood in BD
ARP Flooding: Enable
L2 Unknown Unicast: Flood
L3 Unknown Multicast Flooding: Flood
Multi Destination Flooding: Flood in BD
ARP Flooding: Enable
L2 Unknown Unicast: Flood
L3 Unknown Multicast Flooding: Optimize Flood
Multi Destination Flooding: Flood in BD
ARP Flooding: Disable
L2 Unknown Unicast: Hardware Proxy
L3 Unknown Multicast Flooding: Optimize Flood
Multi Destination Flooding: Flood in BD
ARP Flooding: Disable
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/migration_guides/migrating_existing_networks_to_aci.html
Question 77
An engineer must implement management policy and data plane separation in the Cisco ACI fabric.
Which ACI object must be created in Cisco APIC to accomplish this goal?
Application profile
Tenant
Contract
Bridge domain
Question 78
An engineer is implementing a Cisco ACI environment that consists of more than 20 servers. Two of the servers support only Cisco Discovery Protocol with no order link discovery protocol. The engineer wants the servers to be discovered automatically by the Cisco ACI fabric when connected. Which action must be taken to meet this requirement?
Create an override policy that enables Cisco Discovery Protocol after LLDP is enabled in the default policy group.
Configure a higher order interface policy that enables Cisco Discovery Protocol for the interface on the desired leaf switch.
Configure a lower order policy group that enables Cisco Discovery Protocol for the interface on the desired leaf switch.
Create an interface profile for the interface that disables LLDP on the desired switch that is referenced by the interface policy group.
Question 79
An engineer wants to monitor all configuration changes, threshold crossing, and link-state transitions in a Cisco ACI fabric. Which action must be taken to receive the required messages?
Add Faults and Events to the monitor policy.
Add Session Logs and Audit Logs to the monitor policy.
Include Audit Logs and Events in the Syslog source policy.
Include Events and Session Logs in the Syslog source policy.
After searching, there is nothing called “syslog source policy” in ACI. Syslog source policy exists in UCS Central. The choices now are on “Monitoring Policy” that exits on A and C.
https://community.cisco.com/legacyfs/online/attachments/blog/technote-aci-syslog_externallatest.pdf
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/all/faults/guide/b_APIC_Faults_Errors/b_IFC_Faults_Errors_chapter_010.html
Question 80
An organization has encountered many STP-related issues in the past due to failed hardware components. They are in the process of long-term migration to a newly deployed ACI fabric. Senior engineers are worried that spanning-tree loops in the existing network may be extended to the ACI fabric. Which feature must be enabled on the ACI leaf ports to protect the fabric from spanning-tree loops?
BPDU Guard
per-VLANMCP
Storm Control
BPDU Filter
Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/acifundamentals/Cisco-ACI-Fundamentals-401/Cisco-ACI-Fundamentals-401_chapter_0101.html
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