VMware 5V0-21.20 問題集

質問 1：
Which two storage policy changes require a full rebuild of all components for an object? (Choose two.)
A. Increase the number of disk stripes for an object from 2 to 3.
B. Disable object checksum on an object.
C. Reduce the Primary Failures to Tolerate from 2 to 1 for an object using a failure tolerance method of RAID-1 (Mirroring).
D. Change the failure tolerance method of an object from RAID-1 (Mirroring) to RAID-5 (Erasure Coding).
E. Increase the IOPS limit for an object.
正解：C,D

質問 2：
What is the correct power down sequence for shutting down all nodes in a vSAN cluster with vCenter on the vSAN datastore?
(Place the first selection in the sequence at the top of the list, followed by the second, and so on until the last selection is at the bottom of the list.)

正解：



質問 3：
Which two statements regarding networking are true for a vSAN Stretched Cluster? (Choose two.)
A. A 5ms RTT or less is required between the data sites.
B. A Stretched Cluster can use Layer 2 or Layer 3 communication for the vSAN network.
C. The vSAN data network must communicate with the vSAN witness host.
D. PIM is required for stretched vSAN clusters.
E. A Stretched Layer 2 network is required at the vSAN data sites and at the witness site.
正解：A,B

質問 4：
A hardware 10 controller manufacturer has released a new version of firmware which brings performance improvements to the controller that the vSAN disk group is currently using. The administrator would like to upgrade to the new firmware version.
Which action should the administrator perform?
A. Install the new firmware as soon as possible after testing in his/her lab to take advantage of the performance improvements.
B. Check against the vSAN Compatibility Guide for the correct certified firmware and driver combination and upgrade both firmware and driver.
C. Install the latest version of vSphere before upgrading to the newest version of firmware.
D. Check against the vSAN Compatibility Guide that this new firmware version Is certified and Install it with any certified driver.
正解：A

質問 5：
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?
A. collapse all traffic into one 1Gbps NIC
B. collapse all traffic shared under two 10Gbps NICs
C. change MTU to 9000
D. change stripe width to 12
正解：B

質問 6：
Which is true of the vSAN iSCSI target service?
A. The vSAN default storage policy determines the characteristics of the vSAN iSCSI target service storage objects.
B. It is a VMware supported cost effective way to provide shared storage to another hypervisor.
C. It is a VMware supported solution to provide iSCSI targets to applications that require multiple connections per session (MCS).
D. Security is provided through the iSCSI CHAP & Mutual CHAP Authentication methods.
正解：A

質問 7：
An architect is designing network high availability for a new vSAN Cluster.
Which is a supported configuration for this design?
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A. Create multiple VMkernel adapters on the same subnet for vSAN.
B. Create an additional TCP/IP stack within the cluster and specify vSAN type.
C. Configure multicast to use two separate network interfaces for vSAN traffic.
D. Use LACP on the distributed switch with a route based on IP hash algorithm.
正解：C

質問 8：
Which should be verified before enabling de duplication and compression?
A. All hosts are in maintenance mode.
B. Ensure disk groups are balanced.
C. Adequate space is available.
D. Autoclaim mode is enabled.
正解：C