In a Cisco Catalyst 6500 Series Switch, which engine is required in order to use the distributed Cisco Express Forwarding architecture?

In a Cisco Catalyst 6500 Series Switch, which engine is required in order to use the distributed Cisco Express Forwarding architecture?

A.
DFC

B.
PFC3A

C.
MSFC3

D.
PFC3B

E.
PFC3BXL

Explanation:
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