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?

• A.L2 Unknown Unicast: Hardware Proxy
  L3 Unknown Multicast Flooding: Flood
  Multi Destination Flooding: Flood in BD
  ARP Flooding: Enable
• B.L2 Unknown Unicast: Flood
  L3 Unknown Multicast Flooding: Flood
  Multi Destination Flooding: Flood in BD
  ARP Flooding: Enable
• C.L2 Unknown Unicast: Flood
  L3 Unknown Multicast Flooding: Optimize Flood
  Multi Destination Flooding: Flood in BD
  ARP Flooding: Disable
• D.L2 Unknown Unicast: Hardware Proxy
  L3 Unknown Multicast Flooding: Optimize Flood
  Multi Destination Flooding: Flood in BD
  ARP Flooding: Disable

Correct Answer: B

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/migration_guides/migrating_existing_networks_to_aci.html

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What does a bridge domain represent?

• A.Layer 3 cloud
• B.Layer 2 forwarding construct
• C.tenant
• D.physical domain

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A bridge domain for an EPC called "Web Servers" must be created in the Cisco APIC. The configuration must meet these requirements:
Only traffic to known Mac addresses must be allowed to reduce noice.
The multicast traffic must be limited to the ports that are participating in multicast routing.
The endpoints within the bridge domain must be kept in the endpoint table for 20 minultes without any updates.
Which set of steps configures the bridge domain that satisfies the requirements?

• A.Multicast Destination Flooding should be set to Flood in BD.
  Set L3 Unknown Multicast Flooding to Flood.
  Select the default Endpoint Retention Policy with a Local Endpoint Aging Interval of 1200 seconds.
• B.Select the ARP Flooding checkbox.
  Create an Endpoint Retention Policy with a Remote Endpoint Aging Interval of 20 minutes.
  Set L3 Unknown Multicast Flooding to Optimized Flooding
• C.Set L2 Unknown Unicast to Hardware Proxy.
  Configure L3 Unknown Multicast Flooding to Optimized Flood.
  Create an Endpoint Retention Policy with a Local Endpoint Aging interval of 1200 seconds.
• D.Switch L2 Unknown Unicast to Flood.
  Select the default Endpoint Retention Policy and set the Local Endpoint Aging to 20 minutes.
  Set Multicast Destination Flooding to Flood in Encapsulation.

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An engineer must perform a Cisco ACI fabric upgrade that minimizes the impact on user traffic and allows only permitted users to perform an upgrade. Which two configuration steps should be taken to meet these requirements?

• A.Divide switches into two or more maintenance groups.
• B.Grant tenant-ext-admin access to a user who performs an upgrade
• C.Grant the fabric administrator role to a user who performs an upgrade.
• D.Divide Cisco APIC controllers into two or more maintenance groups.
• E.Combine all switches into an upgrade group.

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New ESXi hosts are procured in a data center compute expansion project. An engineer must update the configuration on the Cisco APIC controllers to support the addition of the new servers to the existing VMM domain. Which action should be taken to support this change?

• A.Map the leaf interface selector to the AEP that is associated with the VMM domain.
• B.Create a range of internal VLANs in the associated VLAN pool.
• C.Enable infrastructure VLAN in the associated AEP.
• D.Set the encapsulation mode as VXLAN.

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