EMC EMC Certifications E20-562 Questions & Answers

• Question 41:

  What are characteristics of a storage view?

  A. An initiator can be in multiple storage views VPLEX FE port can only be in one storage view Each initiator and FE port pair can only be in one storage view

  B. An initiator can only be in one storage view VPLEX FE port can be in multiple storage views Each initiator and FE port pair can be in different storage views

  C. An initiator can only be in multiple storage view VPLEX FE port can be in multiple storage views Each initiator and FE port pair must be in different storage views

  D. An initiator can be in multiple storage views VPLEX FE port can be in multiple storage views Each initiator and FE port pair can only be in one storage view

  Correct Answer: C

• Question 42:

  What is the purpose of issuing the batch-migrate check-plan command?

  A. Determines if there is currently enough back-end bandwidth

  B. Determines if the front-end IO rate is below the predetermined threshold

  C. Verifies that the target devices have no virtual volumes configured

  D. Verifies that the source devices are not in a storage view

  Correct Answer: C

• Question 43:

  Which VPLEX component can determine the difference between a partition and a site failure of a VPLEX Metro configuration?

  A. VPLEX Witness

  B. Management Server

  C. Distributed device

  D. Consistency group

  Correct Answer: A

  Reference: https://www.dellemc.com/en-us/collaterals/unauth/technical-guides-support-information/products/storage-3/docu40004.pdf

• Question 44:

  Why is it EMC best practice that each back-end LUN has a connection to all the A-directors and to all the B-directors in the VPLEX cluster?

  A. Prevents data unavailability during a non-disruptive upgrade

  B. Reduces the number of ITLs

  C. Ensures writes are mirrored on director local cache

  D. Optimizes global read cache

  Correct Answer: A

• Question 45:

  How many copies can RecoverPoint maintain in a MetroPoint topology?

  A. 4

  B. 5

  C. 6

  D. 8

  Correct Answer: A

• Question 46:

  What is the relationship between a storage volume and an extent?

  A. A storage volume can be split into multiple extents

  B. An extent must map to an entire storage volume

  C. A storage volume can be created out of multiple extents

  D. An extent can span multiple storage volumes

  Correct Answer: C

  Reference:http://blog.scottlowe.org/2010/12/13/a-quick-review-of-vplex-storage-objects/

• Question 47:

  What is a supported geometry for a VPLEX device?

  A. JBOD

  B. RAID-5

  C. RAID-C

  D. 2-1 mapping

  Correct Answer: C

  Reference:http://blog.scottlowe.org/2010/12/13/a-quick-review-of-vplex-storage-objects/

• Question 48:

  How can a VPLEX storage administrator manage array-based attributes?

  A. Device tiers

  B. Storage tiers

  C. Volume tiers

  D. Extent tiers

  Correct Answer: B

• Question 49:

  A service provider has implemented a VPLEX Metro cluster without VPLEX Witness and has implemented a static rule set. The static rule set has been set to "cluster-2 detaches". A Microsoft Windows host in the Cluster-1 data center uses a distributed volume. However, the WAN COM fails.

  What is the result of this failure?

  A. 1. VPLEX suspends I/O to all distributed devices on both clusters

  2.

  VPLEX starts a delay timer

  3.

  If connectivity is not restored within the timer expiration period, VPLEX resumes I/O on Cluster-2 and keeps I/O suspended on Cluster-1.

  B. 1. VPLEX starts a delay timer

  2.

  VPLEX suspends I/O to all distributed devices on both clusters

  3.

  If connectivity is not restored within the timer expiration period, VPLEX resumes I/O on Cluster-1 and keeps I/O suspended on Cluster-2.

  C. 1. VPLEX suspends I/O to all distributed devices on both clusters 2.VPLEX starts a delay timer

  3. If connectivity is not restored within the timer expiration period, VPLEX resumes I/O on Cluster-1 and keeps I/O suspended on Cluster-2.

  D. 1. VPLEX starts a delay timer

  2.

  VPLEX suspends I/O to all distributed devices on both clusters

  3.

  If connectivity is not restored within the timer expiration period, VPLEX resumes I/O on Cluster-2 and keeps I/O suspended on Cluster-1.

  Correct Answer: C

• Question 50:

  LUNs belonging to an ESXi cluster were encapsulated behind VPLEX. What information must be shared with the ESXi administrator so that they can re-discover the datastore and the RDM LUNs?

  A. Virtual volume VPD

  B. UUID of back-end LUN

  C. VML ID

  D. WWN: WWPN

  Correct Answer: D