Advanced Networking Function of VEM

A.

VEM (Virtual Ethernet Module) is a software component of Cisco's Nexus 1000V switch, which is designed to provide network virtualization capabilities to virtualized environments. The VEM is responsible for handling the data plane functions of the switch, such as forwarding traffic, implementing security policies, and enforcing quality of service (QoS) policies.

Out of the given options, the advanced networking function performed by VEM is QoS. QoS is a mechanism used to ensure that network traffic is prioritized according to its importance or urgency. This is particularly important in virtualized environments, where multiple virtual machines (VMs) may be sharing the same physical network resources.

VEM provides advanced QoS capabilities by allowing administrators to apply QoS policies directly to VMs or groups of VMs. This allows for granular control over network traffic, ensuring that critical applications or services receive the necessary bandwidth and latency guarantees to operate effectively.

Snooping, VSAN creation, and VLAN pruning are also important networking functions, but they are not considered advanced networking functions performed by VEM. Snooping refers to a set of techniques used to improve network performance and security by monitoring and filtering network traffic. VSAN creation is a feature of Fibre Channel switches that allows administrators to create multiple virtual SANs within a single physical switch. VLAN pruning is a technique used to optimize network bandwidth by removing unnecessary VLANs from trunk links.

In conclusion, the correct answer to this question is A. QoS.