How many VSM modes are there in a Cisco Nexus 1000V environment？（）

A. Each link between the upstream switch and the VEM is an individual subgroup.
B. Connections that go to the same upstream switch must be configured with the command channel-group mode active.
C. Connections that go to the same upstream switch must be configured with the command channel-group mode passive.
D. With vPC-HM CDP， the user can pin traffic from a specific VM to a specific uplink.
E. Connections that go to the same upstream switch must be configured with the command channel-group  mode on.

A. 0
B. 1
C. 2
D. 3
E. 4

A. use summary view in the device manager
B. from the DCNM-SAN client， view ISLs in real time from the Performance drop-down list
C. for each port channel， select Monitor Continually
D. configure traps for each port channel to utilize RMON
E. set up flows with the DCNM-SAN client and use the Performance Manager web client for performance collections