Exam 300-620 topic 1 question 96 discussion

Actual exam question from Cisco's 300-620

Question #: 96
Topic #: 1

A bridge domain for an EPG 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 noise.
• 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 minutes without any updates.

Which set of steps configures the bridge domain that satisfies the requirements?

A. 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.
B. 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.
C. 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.
D. 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.

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Suggested Answer: B 🗳️

by Mr_Certifiable at July 28, 2023, 11:51 a.m.

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Mr_Certifiable

10 months ago

B endpoint retention policy defined in seconds ndpoint Retention Policy The Endpoint Retention Policy configuration is located at Tenant > Policies > Protocol > End Point Retention (Figure 35) and is referred from a Bridge Domain (BD) or a VRF (Figure 36). By default, a BD or a VRF refers to the default policy defined in the common tenant is used Local End Point Aging Interval: The amount of time in seconds that a leaf node can keep each local endpoint in its endpoint table without further updates. The default interval is 900 seconds. If 75 percent of the interval is reached, the leaf node sends three ARP requests to verify the presence of the endpoint. If no response is received, the endpoint is deleted. ● Remote End Point Aging Interval: The amount of time in seconds that a leaf node can keep each remote endpoint in its endpoint table without further updates. The default interval is 300 seconds. https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-739989.html

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