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5V0-21.19 Real Exam Questions

VMware vSAN 6.7 Specialist 2019

100 questions available · Page 1 of 10

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Question 1 Single choice

What could cause a vSAN stretched cluster to fail?

  1. A

    5ms round-trip time (RTT) between data sites

  2. B

    blocked UDP ports on the firewall between data sites

  3. C

    Layer 3 communication from the data sites to the witness site

  4. D

    static routes between the witness site and data site

Show answer and explanation

Correct answer: D

Question 2 Single choice

End-users are complaining that an application running on an all-flash vSAN datastore is not performing well.

Which performance chart should an administrator view to troubleshoot this issue?

  1. A

    Recovery Write IOPS

  2. B

    Resync Latency

  3. C

    Read Cache Read IOPS

  4. D

    Write Buffer Free Percentage

Show answer and explanation

Correct answer: C

Explanation

References:
https://docs.vmware.com/en/VMware-vSphere/6.7/vsan-673-monitoring-troubleshooting-guide.pdf

Question 3 Single choice

When using vSAN Encryption, where does the Key Encryption Key persistently reside?

  1. A

    in /etc/vmware/ssl on each vSAN host

  2. B

    in the KMS server

  3. C

    in a VM configuration file on vSAN

  4. D

    in the vCenter Server cache

Show answer and explanation

Correct answer: C

Explanation

References:
https://blogs.vmware.com/virtualblocks/2018/07/13/understanding-ve-booting-w-vc-unavailable/

Question 4 Single choice

A vSAN Witness has connectivity to a vSAN cluster with supported maximum latency of 500 milliseconds
round-trip time (RTT).

Which vSAN cluster type is the vSAN Witness a member of?

  1. A

    vSAN stretched cluster with 4 nodes in each site

  2. B

    vSAN 2-node direct connected cluster

  3. C

    4-node vSAN cluster using erasure coding

  4. D

    16-node vSAN cluster with nested fault domains

Show answer and explanation

Correct answer: B

Explanation

References:
https://book.akij.net/eBooks/2018/March/5ab76ee97f532/SAnet.cd.EssentialVirtualSAN
(VSAN).pdf (56)

Question 5 Single choice

Where would an administrator enable deduplication and compression in a vSAN environment?

  1. A

    at the cluster level under vSAN services

  2. B

    at the object level using storage policies

  3. C

    at the host level using ESXCLI commands

  4. D

    at the disk group level

Show answer and explanation

Correct answer: B

Question 6 Single choice

vSAN Health shows a warning icon next to vSAN Disk Balance health check.

What can be done to fix this issue?

  1. A

    Click Repair Objects Immediately.

  2. B

    Reduce the maximum component size.

  3. C

    Enable Resynchronization Throttling.

  4. D

    Click Proactive Rebalance Disks.

Show answer and explanation

Correct answer: D

Question 7 Single choice

Refer to the exhibit.

Which networking requirement fulfills the connectivity between the Data Sites and the Witness node?

  1. A

    Extended Data Site network

  2. B

    vMotion network

  3. C

    Direct Connect network

  4. D

    Layer 3 network

Show answer and explanation

Correct answer: D

Explanation

References:
https://storagehub.vmware.com/t/vmware-vsan/vsan-2-node-guide/network-design-considerations-7/

Question 8 Single choice

What is the formula for determining the minimum number of vSAN hosts in a cluster necessary to support a Failures To Tolerate (FTT) policy, where FTT=n?

  1. A

    n+1

  2. B

    n+2

  3. C

    2n+1

  4. D

    2n+2

Show answer and explanation

Correct answer: C

Explanation

To tolerate n failures, you need 2n + 1 ESXi host in the vSAN cluster.
References:
https://searchvmware.techtarget.com/answer/How-can-a-VM-storage-policy-improve-vSAN-cluster-redundancy

Question 9 Multiple choice

An all-flash vSAN cluster contains four nodes.

Which two storage policies can the cluster satisfy? (Choose two.)

  1. A

    FTT=2 (RAID-1 Mirroring)

  2. B

    FTT=2 (RAID-6 Erasure Coding)

  3. C

    FTT=1 (RAID-1 Mirroring)

  4. D

    FTT=1 (RAID-5 Erasure Coding)

  5. E

    FTT=3 (RAID-1 Mirroring)

Show answer and explanation

Correct answers: C, D

Question 10 Single choice

A vSAN all-flash environment with these host specifications has reported high network latency, write latency, and faces degraded performance:

One 1Gbps (vSAN, vMotion Traffic)
One 1Gbps (Management, Fault Tolerance traffic) Based on the specifications of each host, what is recommended to resolve the issue?

  1. A

    collapse all traffic into one 1Gbps NIC

  2. B

    collapse all traffic shared under two 10Gbps NICs

  3. C

    change stripe width to 12

  4. D

    change MTU to 9000

Show answer and explanation

Correct answer: B