CCNP CCNP Data Center 2

Question 1

In Cisco ACI, what is an Endpoint Group (EPG)?

Accepted Answer

A logical grouping of endpoints that share the same policy and security requirements

Answer

An EPG is a logical grouping of endpoints (VMs, servers, etc.) that share the same policy, and communication between EPGs is controlled by contracts.

Question 2

What is the role of the APIC (Application Policy Infrastructure Controller) in Cisco ACI?

Accepted Answer

Centralized policy management and orchestration controller for the ACI fabric

Answer

The APIC is the centralized automation, policy, and management controller for Cisco ACI, though it is not in the data forwarding path.

Question 3

Which underlay protocol does Cisco ACI use between spine and leaf switches?

Accepted Answer

IS-IS

Answer

Cisco ACI uses IS-IS as the underlay routing protocol for fabric discovery and loop-free topology within the spine-leaf architecture.

Question 4

What overlay encapsulation protocol does Cisco ACI use to carry tenant traffic across the fabric?

Accepted Answer

VXLAN

Answer

Cisco ACI uses VXLAN as the overlay encapsulation protocol to carry tenant traffic between leaf switches across the IP underlay.

Question 5

In Cisco ACI, what is a Contract used for?

Accepted Answer

Define permitted communication between EPGs

Answer

Contracts define the allowed protocols and ports for communication between EPGs; without a contract, inter-EPG traffic is denied by default.

CCNP - Cisco Certified Network Professional Practice Test