2V0-622D · Question #159
What three options can improve network performance for a virtual machine? (Choose three.)
The correct answer is B. TSO D. LRO E. SR-IOV. TSO, LRO, and SR-IOV are network offload and bypass technologies that directly improve virtual machine network throughput and reduce CPU overhead.
Question
What three options can improve network performance for a virtual machine? (Choose three.)
Options
- AMLD
- BTSO
- CNetFlow
- DLRO
- ESR-IOV
How the community answered
(21 responses)- A5% (1)
- B95% (20)
Why each option
TSO, LRO, and SR-IOV are network offload and bypass technologies that directly improve virtual machine network throughput and reduce CPU overhead.
MLD (Multicast Listener Discovery) is an IPv6 protocol used to manage multicast group memberships and has no role in improving virtual machine network performance.
TSO (TCP Segmentation Offload) allows the virtual NIC or physical NIC to handle large TCP segment splitting instead of the VM's CPU, reducing CPU utilization and improving transmit throughput.
NetFlow is a network traffic monitoring and analysis protocol used for flow data export to collectors - it is a diagnostic/observability tool, not a performance enhancement mechanism.
LRO (Large Receive Offload) coalesces multiple incoming TCP packets into a single larger buffer before passing them to the VM's networking stack, reducing per-packet processing overhead and increasing receive throughput.
SR-IOV (Single Root I/O Virtualization) allows a VM to directly access a physical NIC's virtual function, bypassing the hypervisor's virtual switch and dramatically reducing latency and CPU overhead for network-intensive workloads.
Concept tested: Virtual machine network performance offload technologies
Source: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.networking.doc/GUID-E8E8D7B2-FE67-4B4F-921F-C3D6D7223869.html
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