EMC EMC Certifications E20-562 Questions & Answers

• Question 21:

  When using VPLEX Metro, what is the supported round trip time between clusters?

  A. 5 ms

  B. 15 ms

  C. 20 ms

  D. 30 ms

  Correct Answer: A

• Question 22:

  

  Which number in the exhibit highlights the Director-A back-end ports?

  A. 1

  B. 2

  C. 3

  D. 4

  Correct Answer: D

  Reference:https://corporate-advice.com/2014/01/30/part-1-emc-vplex-experiences/

• Question 23:

  A new VPLEX system has been installed that uses ESRS. The firewall administrator has opened ports 25, 9010, and 5901 between VPLEX and ESRS. A support ticket is logged. While trying to troubleshoot, the technical support engineer cannot access the GUI of VPLEX.

  Which port needs to be opened on the firewall?

  A. 21

  B. 443

  C. 3268

  D. 8080

  Correct Answer: B

  The VPLEX Management Console's graphical user interface (GUI) is accessible as a web service on the management server's public Ethernet port and the service port, using the HTTPS protocol. It is available on the standard port 443. Reference:http://www.vclouds.nl/wp-content/uploads/2012/04/300-010-493.pdf

• Question 24:

  When is expanding a virtual volume using the Storage Volume expansion method a valid option?

  A. Virtual volume previously expanded by adding extents or devices

  B. Virtual volume is mapped 1:1 to the underlying storage volume

  C. Virtual volume is a metadata volume

  D. Virtual volume has minor problems, as reported by health-check

  Correct Answer: B

  Reference:https://logicalblock.wordpress.com/2014/01/28/how-to-expanding-vplex-virtual-volumes/

• Question 25:

  A storage administrator has created a VPLEX distributed device. The administrator is performing application tests on the host utilizing the distributed virtual volumes. During testing, some of the write response times appear to be elongated. What is a characteristic of distributed devices that explains this issue?

  A. Writes need to be written locally to multiple VPLEX Directors before sending a host acknowledgement.

  B. Writes need to be written to both clusters before sending a host acknowledgement.

  C. Writes need to be journaled in the VPLEX Witness logging volumes before sending a host acknowledgement.

  D. Writes need to be protected on the remote disk arrays only before sending a host acknowledgement.

  Correct Answer: A

• Question 26:

  A company has just installed a new VPLEX cluster into their storage environment with numerous existing storage arrays. They need to present the host's existing data from the VPLEX cluster. Which method should be used to perform this operation?

  A. Encapsulate

  B. Distribute

  C. Stripe

  D. Concatenate

  Correct Answer: B

• Question 27:

  To which VPLEX component does the SNMP management station connect to gather statistics?

  A. VPLEX Witness

  B. Management server

  C. Director-A

  D. Director-B

  Correct Answer: B

• Question 28:

  What is a characteristic of global commands in the VPlexcli?

  A. Executable from any director

  B. Control tasks running on all directors

  C. Run exclusively from the root context

  D. Accessible from all contexts

  Correct Answer: D

  Reference: https://www.dellemc.com/en-us/collaterals/unauth/technical-guides-support-information/products/storage-3/docu40001.pdf page 15

• Question 29:

  Which type of VPLEX statistic provides an instantaneous value that displays CPU utilization and memory utilization?

  A. Buckets

  B. Counters

  C. Readings

  D. Journal Lag

  Correct Answer: C

• Question 30:

  A company has deployed a VPLEX Metro protecting two applications without Cluster Witness:

  -App1 distributed virtual volumes are added to CG1, which has detach-rule set cluster-1 as winner -App2 distributed virtual volumes are added to CG2, which has detach-rule set cluster-2 as winner What should be the consequence if there is a WAN COM failure for an extended period?

  A. I/O for CG1 is suspended at cluster -1; I/O is serviced at cluster-2 I/O for CG2 is serviced at cluster -1; I/O is suspended at cluster-2

  B. I/O for CG1 is suspended at cluster -1; I/O is serviced at cluster-2 I/O for CG2 is serviced at cluster -2; I/O is suspended at cluster-1

  C. I/O for CG1 is detached at cluster -1; I/O is serviced at cluster-2 I/O for CG2 is detached at cluster -2; I/O is serviced at cluster-1

  D. I/O for CG1 is serviced at cluster -1; I/O is suspended at cluster-2 I/O is serviced for CG2 at cluster -2; I/O is suspended at cluster-1

  Correct Answer: C