Which three options can improve the network performance of the virtual machine? (Select three)

Question

Options

• ASR-IOV
• BNetFlow
• CTSO
• DMLD
• ELRD

• A
  84% (56)
• B
  6% (4)
• E
  10% (7)

Explanation

TSO: (TCP Segmentation Offload) is a feature of some NICs that offloads the packetization of data from the CPU to the NIC. TSO is supported by the E1000, Enhanced VMXNET, and VMXNET3 virtual network adapters (but not by the normal VMXNET adapter). In ESXi, TSO is enabled by default in the VMkernel, but is supported in virtual machines only when they are using the VMXNET3 device, the Enhanced VMXNET device, or the E1000 device. TSO can improve performance even if the underlying hardware does not support TSO. SR-IOV: offers performance benefits and trade-offs similar to those of DirectPath I/O. SR- IOV is beneficial in workloads with very high packet rates or very low latency requirements. Like DirectPath I/O, SR-IOV is not compatible with certain core virtualization features, such as vMotion (for details, see the compatibility list for hardware other than the Cisco UCS platform in irectPath I/O?on page 40). SR-IOV does, however, allow for a single physical device to be shared amongst MLD: In addition to the default basic mode for filtering multicast traffic, vSphere Distributed Switch 6.0.0 and later releases support multicast snooping that forwards multicast traffic in a more precise way based on the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) messages from virtual machines. NetFlow is for trobelshooting not preformence https://blogs.vmware.com/vsphere/2011/08/vsphere-5-new-networking-features-netflow.html

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