300-630 practice test

1. Question 1 · 1

   Refer to the exhibit. How is the ARP request from VM1 forwarded when VM2 is not learned in the Cisco ACI fabric?

   Choose one answer.

   

   • Leaf 101 forwards the ARP request to one of the proxy VTEP spines.
   • POD1 spine responds to the ARP request after the POD1 COOP is updated with the VM2 location.
   • Leaf 101 encapsulates the ARP request into a multicast packet that is destined to 225.0.37.192.
   • Leaf 101 switch consumes the ARP reply of VM2 to update the local endpoint table.

2. Question 2 · 1

   An engineer deployed a Cisco ACI fabric and noticed that the fabric learns endpoints from subnets that are not configured on a bridge domain. To meet strict security requirements, the engineer must prevent this behavior. Which action must be taken to prevent this behavior?

   Choose one answer.

   • Activate Enable Data Plane Endpoint Learning
   • Implement Pervasive Gateway
   • Configure Static Binding
   • Enable Enforce Subnet Check

3. Question 3 · 1

   Which protocol is used to exchange the MAC/IP address information for endpoints between spine switches in different pods in a Cisco Multi-Pod solution?

   Choose one answer.

   • BGP VPNv4
   • MP-BGP EVPN
   • IS-IS
   • GRE

4. Question 4 · 1

   Which mechanism is used by ACI spine switches to maintain a consistent copy of the endpoint address and location information?

   Choose one answer.

   • COOP
   • ISIS
   • BD
   • OSPF

5. Question 5 · 1

   An engineer is configuring ACI Multi-Pod between two data centers and must plan the physical cabling in the primary data center. How must the Cisco ACI Multi-Pod topology be connected?

   Choose one answer.

   • Connect spine switch 201 and 202 in pod 1 directly to spine switch 201 and 202 in pod 2.
   • Connect leaf switch 101 and 102 in pod 1 directly to leaf switch 101 and 102 in pod 2.
   • Connect spine switch 201 and 202 in pod 1 to ports on a device that is providing IP connectivity between pods.
   • Connect leaf switch 101 and 102 in pod 1 to ports on a device that is providing IP connectivity between pods.

6. Question 6 · 1

   What is a characteristic of application-centric design in Cisco ACI?

   Choose one answer.

   • One-to-one mapping between EPGs and bridge domains is enforced.
   • A bridge domain has only one subnet.
   • EPGs represent different application tiers.
   • It simplifies gradual migration from a traditional network.

7. Question 7 · 1

   An engineer configures Cisco ACI Multi-Site and must specify the control plane TEP IP for spines. Which statement describes control plane TEP IP in this situation?

   Choose one answer.

   • The unique IP address is defined on each spine node that belongs to a fabric and is used to establish MP-BGP EVPN and VPNv4 adjacencies with the spine nodes in remote sites.
   • The unique IP address is defined on each spine node that belongs to a fabric and is used to establish VXLAN adjacencies with the spine nodes in remote sites.
   • The common anycast address is shared by all the spine nodes in the same site and is used to perform headend replication for BUM traffic.
   • The common anycast address is shared by all the spine nodes at the same site and is used to source and receive unicast VXLAN data plane traffic.

8. Question 8 · 1

   Refer to the exhibit. Server S1 is connected to Cisco ACI using two NIC interfaces. NIC1 is an active interface and NIC2 is a standby interface. NIC2 uses its MAC address to send traffic to the Cisco ACI fabric when NIC1 is offline. The requirement is to update the IP address to use the MAC address of NIC2. Which action accomplishes this goal?

   Choose one answer.

   

   • Clear remote MAC entries.
   • Set L2 Unknown Unicast to Proxy.
   • Activate IP Data Plane Learning,
   • Enable GARP EP Move Detection.

9. Question 9 · 1

   Which requirement applies to migration from Cisco NX-OS mode to Cisco ACI mode with Cisco Nexus 9000 Series Switches?

   Choose one answer.

   • Pre-existing vPC topology must be removed before the migration is started
   • A permit-all contract must be used for traffic that flows inside the data center.
   • Pre-existing FCoE must be removed from the Nexus devices.
   • A minimum of five Cisco APIC appliances must be used in the data center network.

10. Question 10 · 1

    Refer to the exhibit. An engineer is configuring a vSwitch policy in the existing Cisco ACI fabric. The requirement is for the Cisco ACI leaf to learn individual MAC addresses from the same physical port. Which vSwitch policy configuration mode must be enabled to meet this requirement?

    Choose one answer.

    

    • MAC pinning
    • MAC binding
    • LACP passive
    • LACP active

11. Question 11 · 1

    A Cisco ACI fabric is connected to a switched network that runs Spanning Tree Protocol on VLAN 101. VLANs 101, 102, and 103 are mapped to bridge domain BD10123. The leaf node that is attached to this switched network receives a spanning-tree topology change notification. Which endpoints does ACI flush?

    Choose one answer.

    • all endpoints associated with VLAN 102 or 103 in BD10123 on the spine node
    • all endpoints associated with VLAN 101 in BD10123 on the leaf node
    • all endpoints associated with VLAN 101, 102, and 103 in BD10123
    • all endpoints associated with VLAN 101 in BD10123

12. Question 12 · 1

    What is a characteristic of a stretched bridge domain solution between Cisco ACI sites with Layer 2 flood enabled?

    Choose one answer.

    • BUM traffic between sites leverages ISN multicast replication.
    • The solution reduces control plane overhead.
    • Spine head-end replication is used to forward BUM traffic between sites.
    • Contracts are local to the provided site.

13. Question 13 · 1

    What is the purpose of enabling ARP flooding when VMs are migrated from a pre-existing network to Cisco ACI and their gateways remain configured in the legacy setup?

    Choose one answer.

    • to avoid endpoint flapping between the legacy network and the ACI fabric
    • to prevent VMs from communicating with physical servers within the ACI fabric
    • to allow communication between VMs and silent hosts
    • to allow VMs to communicate with devices outside of their subnet

14. Question 14 · 1

    Refer to the exhibit. A company decided to decrease its routing footprint and remove RT-2 and RT-3 devices from its data center. Because of that, the exit point must be created from all the tenants by using the common tenant. Which two configuration tasks must be completed to meet these requirements? (Choose two.)

    Choose all answers that apply.

    

    • Move subnets from all the bridge domains to the EPG level and mark them with flag Shared between VRFs.
    • Change contract Ctr-3 scope to Global, consume it by all EPGs, and flag all subnets with flag Shared between VRFs.
    • Update the L3Out ExtEPG subnet in the common tenant with flag Shared Route Control Subnet and Aggregate Shared Routes.
    • Mark all subnets with flag Shared between VRFs and attach contract Ctr-3 as a provider to all the EPGs.
    • Export contract Ctr-2 into the tenant TN-1 and attach it as a consumer to all the EPGs in the tenant TN-1.

15. Question 15 · 1

    The engineer notices frequent MAC and IP address moves between different leaf switch ports. Which action prevents this problem from occurring?

    Choose one answer.

    • Disable enforce subnet check.
    • Disable IP bridge domain enforcement.
    • Enable endpoint loop protection.
    • Enable rogue endpoint control.

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