Which command should you use to configure the interfaces on the Nexus switch that connects to the FEX?

You are connecting a Cisco Nexus 2300 Series FEX to a Cisco Nexus 5600 Series parent switch.

Which command should you use to configure the interfaces on the Nexus switch that connects to the FEX?
A . switch(config-if)# switchport mode f
B . switch(config-if)# switchport mode fex-fabric
C . switch(config-if)# switchport mode fabricpath
D . switch(config-if)# switchport mode vntag

Answer: B

Explanation:

Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus2000/sw/configuration/guide/rel_4_0_1a/NX2000CLIConfig/FEX-Config.html