EMC Implemenation E20-340 Questions & Answers

• Question 31:

  Use the calculator.

  A customer has an application that processes very large medical image files. The application reads raw graphical data, writes temporary files that are 200% of the size of the original data, and writes final data that is the same size as the original data. The temporary data is then deleted. The 1000 GB data LUN has a single clone, which is fractured before processing begins, and is resynchronized after processing ends.

  If the original data for a given run was 250 GB in size, how much data is written to the clone when it is resynchronized?

  A. 750 GB

  B. 500 GB

  C. 250 GB

  D. 1000 GB

  Correct Answer: A

• Question 32:

  A customer is using MV/A in a remote data center to protect a LUN. They also use the same source LUN for an ISC job to distribute the content of their parts catalogue to 27 regional offices.

  What is the maximum number of snapshots of the source LUN they can take if they need to use a SnapView Recovery Session?

  A. 5

  B. 8

  C. 7

  D. 6

  Correct Answer: A

• Question 33:

  An existing CLARiiON array running release 26 FLARE code is being converted to a CX4 and release 30 FLARE code. You discover clone LUNs are in use on the existing array. What must be done before the conversion?

  A. Change the CPL size from 128 MB to 1GB.

  B. Change the CPL size from 128 MB to 256 MB.

  C. Change the CPL size from 256 MB to 128 MB.

  D. Change the CPL size from 128 MB to 512 MB.

  Correct Answer: A

• Question 34:

  Use the calculator.

  A customer has an application that processes large graphics files. The application reads raw graphical data, writes temporary files that are the size of the original data, and overwrites the temporary files with final data that is the same size as

  the original data.

  The remaining temporary data is then deleted. The 800 GB data LUN has a single SnapView session, which is started before processing begins, and is removed after processing ends.

  If the original data for a given run was 250 GB in size, how much space is required in the reserved LUN pool?

  A. 255 GB

  B. 375 GB

  C. 510 GB

  D. 755 GB

  Correct Answer: A

• Question 35:

  A user with a CX4-480 tries to clone a Fibre Channel source LUN. The operation fails.

  What could be the cause of the failure?

  A. No free LUN of the correct size

  B. One CPL is 1024 MB and the other is 2048 MB in size

  C. Insufficient free space in the reserved LUN pool

  D. The fracture log has reached capacity

  Correct Answer: A

• Question 36:

  On a CX4 with only SnapView enabled what is the maximum number of replicas (snapshots and clones) of a LUN that can be configured and made available to hosts?

  A. 80

  B. 16

  C. 64

  D. 72

  Correct Answer: A

• Question 37:

  A user creates a snapshot of a 400 GB source LUN with the Unisphere Snapshot Wizard. How many reserved LUNs, and what size, will be created by default?

  A. Two reserved LUNs of 60 GB each

  B. One reserved LUN of 80 GB

  C. Two reserved LUNs of 40 GB each

  D. One reserved LUN of 120 GB

  Correct Answer: A

• Question 38:

  In which directory does the initiatorname.iscsi file reside on a Linux host?

  A. /etc/

  B. /proc/scsi/scsi

  C. /proc/scsi

  D. /sbin

  Correct Answer: A

• Question 39:

  Which command can be used to view information about iSCSI initiators on a Linux host?

  A. iscsi-iname

  B. iscsi-ls

  C. iscsi-device D. iscsid

  Correct Answer: A

• Question 40:

  A customer has activated a snapshot on a host and performed a complex simulation using the data on it. They now wish to use the simulation results on a different host without affecting the original production LUN. How can they achieve this?

  A. Copy the results over the LAN to the additional host

  B. Take a snapshot of the results and present to the other host

  C. De-activate the snapshot and activate to the other host

  D. Clone the results and present to the other host

  Correct Answer: A