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Free 5V0-21.21 Exam Braindumps (page: 3)

Page 2 of 14
PDF with 100 Questions

An administrator has been tasked to reboot a node in an encrypted vSAN cluster. The vSAN disk groups on that node become locked after rebooting the node.
Which step should be performed to exit the locked state?

  1. Manually replace the Host Encryption Key (HEK) of each affected host.
  2. Restore the communication with the KMS server, and re-establish the trust relationship.
  3. Replace the caching device in each affected disk group.
  4. Run /etc/init.d/vsanvpd restart to rescan the VASA providers.

Answer(s): B


Reference:

https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.vsan-monitoring.doc/GUID-084B3888-499F-4CD0-8954-A149560B1534.html



An administrator wants to check the performance metrics for the workloads and their virtual disks that are running on a vSAN cluster, but no statistical charts are displayed in the vSphere client.
Why is this behavior being seen? Options:

  1. vSAN network diagnostic mode is not enabled.
  2. vSAN proactive tests haven't been run yet.
  3. vSAN performance service is turned off.
  4. vSAN performance verbose mode is not enabled.

Answer(s): C

Explanation:

Some tools allow for measuring latency peaks. This unfortunately isn't ideal, as it can unfairly represent statistical outliers, which may very well occur when there is little to no I/O activity. The best way to understand the actual behavior of VM and application latencies is to observe in time based performance graphs. Depending on the level of detail, you may need to measure at the individual VMDK level. Become familiar with these graphs to determine what is normal, and what is not for that given application. This is where you can use built-in functionality of vCenter and the vSAN performance service metrics to gather this information.


Reference:

https://core.vmware.com/resource/troubleshooting-vsan-performance#_Toc536646873



In a vSAN stretched cluster, which value must be set in the vSAN policy if there is no requirement for data mirroring across sites?
Options:

  1. SFTT = 0
  2. SFTT = 1
  3. PFTT = 1
  4. PFTT = 0

Answer(s): A


Reference:

https://www.delltechnologies.com/asset/en-us/products/converged-infrastructure/technical-support/h15275-vxrail-planning-guide-virtual-san-stretched-cluster.pdf (5)



After a vSAN Witness Appliance network configuration, the vSAN administrator notices that vSAN traffic flows from vmk0 (Management Traffic) rather than vmk1 (vSAN Traffic).
Which step should be taken to resolve this issue? Options:

  1. Configure vmk0 with IP address on the same range as that of vmk1.
  2. Tag the vmk0 for vSAN traffic.
  3. Configure vmk1 with IP address on the different network than that of vmk0.
  4. Tag the vmk1 for Witness traffic

Answer(s): C

Explanation:

Click on next and assign the IP address for the Witnesspg vmkernel interface. The vmk1 interface cannot be configured with an IP address on the same range as that of vmk0. This is because Management traffic and vSAN traffic use the default TCP/IP stack. If both vmk0 and vmk1 are configured on the same range, a multihoming condition will occur and vSAN traffic will flow from vmk0, rather than vmk1.


Reference:

http://www.vmwarearena.com/vsan-stretched-cluster-how-to-configure-vsan-witness-appliance/






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