Cisco 300-620 Online Practice Questions and Exam Preparation

Cisco 300-620 Online Questions & Answers

• Question 101:

  Which class of ACI object is presented in this output?

  A. Contract
  B. Bridge Domain
  C. Tenant
  D. Endpoint
  A. Contract

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  Explanation/Reference:

  https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/4-x/openstack/ACI-Installation-Guide-for-Red-Hat-Using-OSP13-Director/m-configuringironic-for-openstack.html

• Question 102:

  An engineer must configure an L3Out to advertise a single summarized address for all Cisco ACI host routes. The summarized address must be advertised to the core switches that are physically attached to the ACI fabric. An external EPG is created with the required subnet.

  Which configuration set advertises the subnet to the remote peer?

  A. Set the external EPG subnet scope to Export Route Control Subnet. Associate a route control profile.
  B. Set the external EPG subnet scope to Export Route Control Subnet. Associate a route summarization policy.
  C. Set the external EPG subnet scope to Import Route Control Subnet. Associate a route summarization policy.
  D. Set the external EPG subnet scope to Import Route Control Subnet. Associate a route control profile.
  B. Set the external EPG subnet scope to Export Route Control Subnet. Associate a route summarization policy.

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  Explanation/Reference:

  https://www.cisco.com/c/en/us/td/docs/dcn/aci/apic/5x/l3-configuration/cisco-apic-layer-3-networking-configuration-guide-52x/route-summarization-layer3-config-52x.html

• Question 103:

  Refer to the exhibit.

  

  VM1 and VM2 are in Cisco ACI POD1 and communication takes place. Which event is triggered when VM2 is live migrated from POD1 to POD2?

  A. Leaf 102 installs a bounce entry for VM2 pointing to the PTEP address of leaf 201.
  B. Leaf 201 creates a tunnel with leaf 102 because of the bounced traffic that is destined to VM2.
  C. Spines from POD2 send an MP-BGP EVPN update to the leaves in POD1 about the new location of VM2.
  D. An MP-BGP EVPN update is received by spines in POD1 announcing the reachability of VM2 via the proxy VTEP address of the spines in POD2.
  C. Spines from POD2 send an MP-BGP EVPN update to the leaves in POD1 about the new location of VM2.

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  Explanation/Reference:

  1.

  The VM migrates between Pod1 and Pod2.

  2.

  Once the migration is completed, the leaf node in Pod2 discovers EP2 as locally connected and sends a COOP update message to the local spines.

  3.

  The spine node that receive the COOP message updates EP2's info in the COOP database, replicates the information to the other local spines and sends a MP-BGP EVPN update to the spines in remote Pods.

  4.

  The spines in the remote Pods receive the EVPN update and add the information to the local COOP database that EP2 is now reachable via the Proxy VTEP address identifying the spines in Pod2 (“Proxy B”).

  5.

  The spine sends a control plane message to Leaf 4 as it was the old known location for EP2. Leaf 4 as a consequence installs a bounce entry for EP2 pointing to the local spines Proxy VTEP address.

  https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-737855.html

• Question 104:

  An administrator wants to verify whether a recent policy modification in Cisco ACI was caused by a user action. Which source should be inspected first?

  A. health score details
  B. audit logs
  C. endpoint retention policy
  D. COOP database
  B. audit logs

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  Explanation

  The correct answer is B because audit logs record user-initiated configuration changes and are the primary source for determining whether a human action introduced a change. Option A is incorrect because health scores indicate operational condition, not authorship of changes. Option C is incorrect because endpoint retention policies affect endpoint aging behavior only. Option D is incorrect because the COOP database tracks endpoint location information, not administrator actions.

• Question 105:

  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?

  A. BPDU Guard
  B. per-VLAN MCP
  C. Storm Control
  D. BPDU Filter
  B. per-VLAN MCP

• Question 106:

  Refer to the exhibit.

  

  A syslog service was configured to capture different faults and events from a Cisco ACI tenant. The Cisco ACI fabric is missing any OOB capability. After some time, the administrator noticed that the syslog messages were not present on the

  APIC. Which two actions complete the configuration? (Choose two.)

  A. Change forwarding facility to local1.
  B. Ping the syslog server from the APIC.
  C. Reconfigure the UDP port settings.
  D. Change the minimum severity levels.
  E. Set the management EPG to default.
  C. Reconfigure the UDP port settings.
  D. Change the minimum severity levels.

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  Explanation/Reference:

  UDP Port 514

  When using Inband management for your ACI Fabric, the Inband management EPG DOES require the specific UDP Port 514 (Syslog) to be enabled.

  The severity level is set to Alert which is level 1. This would exclude levels 2-7.

• Question 107:

  Refer to the exhibit.

  

  An engineer configured this node control policy and these ACI objects:

  1. leaf policy group named ACI_Leaf_PolGrp.

  2. leaf switches profile named ACI_Leaf_NodeProf.

  3. node control policy named ACI_Pal_Node_Ctrl.

  Which association set must be used to apply ACI_Pal_Node_Ctrl on Node-2001?

  A. SWNFV1ACIPAL to ACI_Leaf_PolGrp ACI_Leaf_PolGrp to ACI_Leaf_NodeProf SWNFV1ACIPAL to Node-2001
  B. ACI_Pal_Node_Ctrl to SWNFV1ACIPAL ACI_Leaf_PolGrp to Node-2001 ACI_Pal_Node_Ctrl to ACI_Leaf_NodeProf
  C. ACI_Pal_Node_Ctrl to ACI_Leaf_PolGrp ACI_Leaf_PolGrp to Node-2001 SWNFV1ACIPAL to ACI_Leaf_NodeProf
  D. ACI_Pal_Node_Ctrl to ACI_Leaf_PolGrp ACI_Pal_Node_Ctrl to Node-2001 SWNFV1ACIPAL to ACI Leaf PolGrp
  C. ACI_Pal_Node_Ctrl to ACI_Leaf_PolGrp ACI_Leaf_PolGrp to Node-2001 SWNFV1ACIPAL to ACI_Leaf_NodeProf

• Question 108:

  How does Cisco ACI detect the IP address of a silent host that moved from one location to another without notifying a Cisco ACI leaf?

  A. Silent hosts are detected by the ACI fabric.
  B. Endpoint announce messages are sent to COOP.
  C. ARP requests are flooded in the bridge domain.
  D. Bounce entries are installed on the leaf switch.
  C. ARP requests are flooded in the bridge domain.

• Question 109:

  What must be enabled in the bridge domain to have the endpoint table learn the IP addresses of endpoints?

  A. L2 unknown unicast: flood
  B. GARP based detection
  C. unicast routing
  D. subnet scope
  C. unicast routing

• Question 110:

  Refer to the exhibit.

  

  Which Adjacency Type value should be set when the client endpoint and the service node interface are in a different subnet?

  A. Routed
  B. Unicast
  C. L3Out
  D. L3
  D. L3

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  Explanation/Reference: