Which two items are required components of VN-Link in software? (Choose two.)

A.
VDC

B.
VEM

C.
vPC

D.
VSM

E.
VRRP

Explanation:
The Cisco Nexus 1000V Series consists of two main types of components that can virtually emulate a
66-slot modular Ethernet switch with redundant supervisor functions:
• Virtual Ethernet module (VEM)-data plane: This lightweight software component runs inside the
hypervisor. It enables advanced networking and security features, performs switching between
directly attached virtual machines, provides uplink capabilities to the rest of the network, and
effectively replaces the vSwitch. Each hypervisor is embedded with one VEM.
• Virtual supervisor module (VSM)-control plane: This standalone, external, physical or virtual
appliance is responsible for the configuration, management, monitoring, and diagnostics of the
overall Cisco Nexus 1000V Series system (that is, the combination of the VSM itself and all the VEMs
it controls) as well as the integration with VMware vCenter. A single VSM can manage up to 64
VEMs. VSMs can be deployed in an active-standby model, helping ensure high availability.

http://www.cisco.com/c/en/us/solutions/collateral/switches/nexus-1000v-switch-vmwarevsphere/white_paper_c11-525307.html