A Telco customer is implementing NFV using vSphere as the virtualization platform.
Which feature can help achieve a high packet rate with lower CPU consumption?
A.
Network I/O Control
B.
SplitRX
C.
ERSPAN
D.
LACP
A Telco customer is implementing NFV using vSphere as the virtualization platform.
Which feature can help achieve a high packet rate with lower CPU consumption?
A Telco customer is implementing NFV using vSphere as the virtualization platform.
Which feature can help achieve a high packet rate with lower CPU consumption?
A.
Network I/O Control
B.
SplitRX
C.
ERSPAN
D.
LACP
B
https://vbry21.wordpress.com/2012/07/17/vmware-esxi5-splitrx/
http://stretch-cloud.info/2013/02/improving-network-performance-for-multicast-traffic-splitrx-mode-is-your-choice/
http://buildvirtual.net/tuning-esxi-host-networking-configuration/
https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vmware-perfbest-practices-vsphere6-0-white-paper.pdf#G6.1011326
And elimination method
A – NIOC is for reservation/limiting
C – ERSPAN is port mirroring (monitoring) over GRE
D – Link Aggregation has nothing to do with CPU consumption
I think B, the strange bit is that SplitRX is enabled by default since 5.1
Page 14 identifies B as correct answer.
http://pubs.vmware.com/nsxt-11/topic/com.vmware.ICbase/PDF/nsxt_11_bestpractice.pdf
not to muddy the waters.. but the question specifies lower cpu consumption, and splitrx increases cpu consumption?
http://pubs.vmware.com/nsxt-11/topic/com.vmware.ICbase/PDF/nsxt_11_bestpractice.pdf
Disable SplitRx Mode for an ESXi Host
For better CPU efficiency, for example when the packet rate received from the queue is low the
SplitRx mode can be disabled for an ESXi host from the vSphere Clien
t.
–Still… I guess all the other answers seem wrong.
SplitRx mode is an ESXi feature that uses multiple physical CPUs to process network packets received in a single network queue. This feature provides a scalable and efficient platform for multicast receivers. SplitRx mode typically improves throughput and CPU efficiency for multicast traffic workloads.
New 2V0-622PSE Exam Questions and Answers Updated Recently (18/Sep/2017):
NEW QUESTION 2
Which Host Profile Subprofile configuration is used to configure firewall settings for ESXi hosts?
A. Advanced Configuration Settings
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NEW QUESTION 3
An administrator has decided to use Auto Deploy in the environment. Which two considerations must be taken into account before configuring Auto Deploy? (Choose two.)
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Which two permissions are required to migrate a virtual machine with Storage vMotion? (Choose two.)
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D. Datastore > Allocate Space
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Which are two vCenter Server two-factor authentication methods? (Choose two.)
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Which is the block size on the VMFS6 datastore?
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C. Small file blocks are 512KB, large file blocks are 64MB.
D. Small file blocks are 1MB, large fileblocks are 512MB.
Answer: B
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An administrator would like to configure vSphere HA to use two isolation addresses. How would this affect the behavior of HA?
A. If both isolation addresses are not reachable, the host will be restarted by the HA agent.
B. If both isolation addresses are not reachable, the host will use the vCenter Server IP address as a final isolation address before being marked isolated.
C. If only one of the isolation addresses is reachable, the host will not be marked isolated by HA.
D. If only one of the isolation addresses is reachable, the host will be considered in an isolated by HA.
Answer: C
NEW QUESTION 8
An administrator notices that a virtual machine running SQL Server is not performing as expected:
vmware.log> vmx| W110: NUMA and VCPU hot add are incompatible. Forcing UMA
How can the administrator resolve this issue?
A. Power off the virtual machineand disable vCPU hot plug.
B. Reinstall VMware Tools.
C. Modify the .vmx file to force NUMA and vCPU hot add to function.
D. Installation third party plug-in to enable NUMA and vCPU hot add to function.
Answer: A
NEW QUESTION 9
……
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Vmware recommendation for the storage DRS datastore?
template available in Content Library, but unable to use it what could be the issue?
Network I/O Control: traffic is divided into the following predefined network resource pools https://pubs.vmware.com/vsphere-51/index.jsp#com.vmware.vsphere.networking.doc/GUID-ADEA0213-C969-43E4-B1F4-66D4A916EBDF.html
SplitRX: send jobs to CPU https://communities.vmware.com/thread/405943
ERSPAN: is for monitoring https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/lanswitch/configuration/xe-3s/lanswitch-xe-3s-book/lnsw-conf-erspan.html#GUID-4CAB13D7-0803-4D67-B720-4AB56A978FEF
LACP: method to control the bundling of several physical network links together to form a logical channel for increased bandwidth and redundancy purposes https://kb.vmware.com/s/article/2034277
For me the correct answer that is more close to the question is Network I/O Control (A)