EMC E20-326 Online Practice Questions and Exam Preparation

EMC E20-326 Online Questions & Answers

• Question 11:

  Which operations are allowed by Open Replicator/LM?

  A. Online pull only
  B. Offline pull only
  C. Online push only
  D. Offline push only
  A. Online pull only

• Question 12:

  You are proposing a new VMAX array with FAST VP. The customer reports their application needs a small amount of EFD capacity and asks whether 200 GB EFDs or 400 GB EFDs would provide better overall performance. Which drive size do you recommend and why?

  A. 400 GB EFDs. They support higher IOPS than 200 GB EFDs.
  B. 200 GB EFDs. They support higher I/O density than 400 GB EFDs.
  C. 400 GB EFDs. They support higher I/O density than 200 GB EFDs.
  D. 200 GB EFDs. They support higher IOPS than 400 GB EFDs.
  B. 200 GB EFDs. They support higher I/O density than 400 GB EFDs.

• Question 13:

  Which host-based performance tool should be used to gather data for Microsoft Windows systems?

  A. PERFMON
  B. SAR
  C. IOSTAT
  D. NAR
  A. PERFMON

• Question 14:

  A Customer would like to use Open Replicator to periodically push their production data to a remote array. Which solution will minimize performance impact to the production devices?

  A. Cold push using production devices
  B. Cold push using TimeFinder/Clone replica devices
  C. Hot push with donor update using production devices
  D. Hot push using TimeFinder/Snap replica devices
  B. Cold push using TimeFinder/Clone replica devices

• Question 15:

  A customer plans to configure their new Symmetrix VMAX 20K. They want your advice on how to configure a storage pool. This new storage pool will handle random write I/O What should be your advice about RAID types as they relate to performance?

  A. Use RAID 1 because RAID 5 and RAID 6 will have a higher write penalty.
  B. Use RAID 5 because it can be more efficient for random writes than RAID 1.
  C. Use RAID 6 because both RAID 1 and RAID 5 have a higher write penalty.
  D. RAID type does not matter since everything in the VMAX goes through cache.
  A. Use RAID 1 because RAID 5 and RAID 6 will have a higher write penalty.

• Question 16:

  A colleague implemented cascaded SRDF for a VMAX technology refresh and site relocation activity. The colleague reports they shutdown the hosts at production Site A and copied all data to the bunker Site B VMAX. But they are unable to

  enable SRDF/S between Site B and remote Site C.

  What should you advise them?

  A. SRDF/S is not supported on the second leg of a cascaded SRDF implementation.
  B. Enable SRDF/A on the first leg and then enable SRDF/S on the second leg.
  C. Suspend SRDF/S on the first leg and then enable SRDF/S on the second leg.
  D. The Site B devices must be converted to use concurrent SRDF.
  A. SRDF/S is not supported on the second leg of a cascaded SRDF implementation.

• Question 17:

  Which operations are allowed by Open Replicator/DM?

  A. All functions except offline pull
  B. All functions except online push
  C. All functions except online pull
  D. All functions except offline push
  C. All functions except online pull

• Question 18:

  A customer plans to configure their new Symmetrix VMAX 20K. They want your advice on how to configure a storage pool. This new storage pool will handle large block, sequential write I/O. What advice should be provided about RAID types as they relate to performance?

  A. Use RAID 1 because RAID 5 will have an overhead penalty.
  B. Use RAID 5 because it can be more efficient for sequential writes than RAID 1.
  C. Use RAID 6 because both RAID 1 and RAID 5 have a higher overhead penalty.
  D. RAID type does not matter since everything in the VMAX goes through cache.
  B. Use RAID 5 because it can be more efficient for sequential writes than RAID 1.

• Question 19:

  Refer to the exhibit.

  

  What is a characteristic of the proposed configuration recommended by TierAdvisor?

  A. It will consume 6% less storage than the current configuration
  B. It will have 49% better response time than the current configuration
  C. It will cost 2% less than the current configuration
  D. It is unsuitable for use with FAST because the tier allocations add up to 100%
  B. It will have 49% better response time than the current configuration

• Question 20:

  What is the maximum number of wavelengths that can be multiplexed on a single optical fiber over DWDM?

  A. 160
  B. 16
  C. 32
  D. 200
  A. 160