Which two statements about connecting the Cisco ACI fabric to an outside network such as a
WAN or existing data center network are true? (Choose two.)
A.
A private Layer 3 network is extended to the outside via a Layer 2 connection.
B.
A private Layer 3 network is extended to the outside via a Layer 3 connection.
C.
A bridge domain is extended to the outside via a Layer 2 connection.
D.
A bridge domain is extended to the outside via a Layer 3 connection.
Explanation:
Reference: http://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/applicationcentric-infrastructure/white-paper-c07-732033.html (See figure 1 and 2)
B & C
I Agree it’s B & C
Layer 3 outside connections, or external routed networks, provide IP connectivity between a private network of a tenant and an external IP network. Each layer 3 outside connection is associated with one private network only. Aprivate network may not have a layer 3 outside connection if IP connectivity to the outside is not required.
Extend the Bridge Domain Out of the ACI Fabric
Another way to extend the layer 2 domain beyond the ACI fabric is to create layer 2 outside connections. On the APIC GUI it is under menu TenantàNetworkingàExternal Bridged Networks (Figure 53). A layer 2 outside connection is associated with a bridge domain and it is designed to extend the whole bridge domain (not an individual EPG under bridge domain) to the outside network