Exam 300-620 topic 1 question 149 discussion

A should be correct but, is not completely right, because the policy is programmed in the hardware policy CAM only when an endpoint or traffic requires it. B is wrong because the policy is not immediately programmed in the CAM when downloaded to the leaf software. In general in pre-provision mode he policy is downloaded to the leaf immediately when the change is implemented on the Cisco APIC, but it is programmed in the hardware policy CAM only when an endpoint or traffic requires it. This is the correct answer to this question.

Resolution immediacy - Determines when VLAN, VXLAN binding, contracts, or filters should be Downloaded to the Leafs: Pre-Provision, Immediate, On-Demand Pre-Provision - The VLAN is deployed on all leaf interfaces related to the AAEP associated to the VMM domain regardless of VM controller of hypervisor status.

Resolution Immediacy Pre-provision—Specifies that a policy (for example, VLAN, VXLAN binding, contracts, or filters) is downloaded to a leaf switch even before a VM controller is attached to the virtual switch (for example, VMware VDS). This pre-provisions the configuration on the switch.

Setting the Resolution Immediacy option to Immediate causes policy to be pushed to leaf switches as soon as an LLDP connection is made between the vDS and the Nexus 9000 Leaf Switch.

ok, moving to A, but the question sucks a little imo

My tip is B. Resolution immediacy: Pre-provision - policy is downloaded to switches. Deployment immediacy : If immediate - policy applied to CAM once it is uploaded to switch. https://rednectar.net/2018/08/17/resolution-immediacy-and-deployment-immediacy-aci-master-class/ Just think - you cannot put anything on switch into CAM if not yet downloaded

A is correct

A is correct

A is correct