EMC EMC Certifications E20-562 Questions & Answers

• Question 31:

  LUNs are being provisioned from an ALUA-capable back-end array to VPLEX. What is the path requirement for each VPLEX director when connecting to this type of array?

  A. At least two paths to every back-end array and storage volume

  B. At least two paths to both the active and passive array controllers

  C. A least two paths to both the active and non-preferred array controllers

  D. At least two paths to the active array controller only

  Correct Answer: B

• Question 32:

  Which command can be used to create a distributed virtual volume from specified storage volumes?

  A. storage-tool compose

  B. ds dd create

  C. virtual- volume create

  D. storage-volume compose

  Correct Answer: B

  Reference:https://www.emc.com/collateral/TechnicalDocument/docu47973.pdf(page 82)

• Question 33:

  What determines which cluster will service I/O in the event of a WAN COM failure for a distributed device that is not a member of a consistency group?

  A. Rule set of the distributed device

  B. VPLEX Witness

  C. Detach rule of the consistency group

  D. Detach rule of the storage view

  Correct Answer: B

• Question 34:

  What is a feature of GeoSynchrony 6.0 with respect to service account login to the VPlexcli?

  A. Service account requires authentication to the Linux shell VPlexcli requires an RSA token

  B. Service account requires no authentication to the Linux shell VPlexcli requires certificate authority

  C. Service account requires no authentication to the Linux shell VPlexcli requires authentication through LDAP

  D. Service account requires authentication only to the Linux shell VPlexcli does not require an extra authentication step

  Correct Answer: B

• Question 35:

  What is a key VPLEX component that enables an active-active data center?

  A. Distributed storage views

  B. Distributed virtual volumes

  C. Distributed extents

  D. Distributed storage volumes

  Correct Answer: B

• Question 36:

  In a VPLEX Metro, what factor has a direct impact on VPLEX performance with respect to WAN bandwidth?

  A. Thin pool rebalances

  B. Read rate on distributed volumes

  C. Raid rebuild on array

  D. Write rate on distributed volumes

  Correct Answer: D

• Question 37:

  What is a VPLEX RAID-0 device?

  A. Device that stripes data beneath a top-level device

  B. Device that concatenates data on a top-level device

  C. Extent that concatenates data on a top-level device

  D. Extent that stripes data beneath a top-level device

  Correct Answer: A

• Question 38:

  

  Which protocol is presented by "B" in the exhibit?

  A. FC

  B. iSCSI

  C. FCoE

  D. IPFC

  Correct Answer: A

• Question 39:

  What is the maximum number of synchronous consistency groups supported by VPLEX?

  A. 256

  B. 512

  C. 1024

  D. 2048

  Correct Answer: D

• Question 40:

  What is the maximum number of virtual volumes that can be placed into a single consistency group?

  A. 800

  B. 900

  C. 1000

  D. 1100

  Correct Answer: C

  Reference:http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-director/vplex-mgmt-guide/5-0/b_Cisco_UCSD_VPLEX_MGT_GD_50/ b_Cisco_UCSD_VPLEX_MGT_GD_50_chapter_011.html#concept_F8B4897EFD7649EEAC32F11625C70320