EMC E20-545 Online Practice Questions and Exam Preparation

EMC E20-545 Online Questions & Answers

• Question 121:

  An EMC VNX system administrator has a heterogeneous FAST VP Pool with 2.4 TB of available space. The pool contains a combination of thick LUNs and thin LUNs. The administrator attempts to create a 2.4 TB thick LUN; however, the process fails.

  What caused the failure?

  A. There is insufficient space for thick LUN metadata
  B. Pools with thick LUNs cannot be oversubscribed
  C. Heterogeneous Pools do not allow thick LUNs larger than 2 TB
  D. VNX Snapshots are present on the existing thin LUNs
  A. There is insufficient space for thick LUN metadata

• Question 122:

  A customer plans to connect a new Windows 2012 host to a new VNX array. The customer's application requires LUNs that are aligned at 2048 blocks. What should you advise?

  A. No action is needed. Partitions are aligned at 2048 blocks automatically.
  B. They will need to manually align the volumes.
  C. No action is needed for basic disks. Dynamic disks require alignment.
  D. No action is needed for dynamic disks. Basic disks require alignment.
  A. No action is needed. Partitions are aligned at 2048 blocks automatically.

• Question 123:

  A VM guest on an ESX host requires direct access to a LUN. Which mechanism enables this functionality?

  A. RDM
  B. MetaLUN
  C. Datastore
  D. Private LUN
  C. Datastore

• Question 124:

  What is a primary capability of Data Protection Advisor (DPA)?

  A. Suggest improvements to the replication environment
  B. Quiesce DB2 and start a backup
  C. Create and delete snapshots
  D. Audit multipath count and status
  A. Suggest improvements to the replication environment

• Question 125:

  A customer reported degraded performance with several of the applications that run on a VNX. After reviewing the performance data on the array, you find that all the performance issues are related to one RAID 5 RAID Group. Specifically, this RAID Group is performing 50 percent fewer IOPS than previously.

  What is the most likely reason?

  A. The RAID Group is rebuilding.
  B. The RAID Group is trespassed.
  C. Write cache is not configured.
  D. Read cache is not configured.
  A. The RAID Group is rebuilding.

• Question 126:

  A customer has a VNX system that uses only RAID 5 configured as 4+1 groups. The VNX model supports a maximum of 250 drives. They intend to use Clones for local replication and backups. What is the size of the largest Pool they can create?

  A. 240 drives
  B. 241 drives
  C. 246 drives
  D. 250 drives
  A. 240 drives

• Question 127:

  Which LAN configuration is recommended for an iSCSI network on the VNX?

  A. Layer 2 (switched)
  B. Layer 3 (routed)
  C. Layer 2 (routed)
  D. Layer 3 (switched)
  A. Layer 2 (switched)

• Question 128:

  What factors determine the size of a Journal volume?

  A. Change rate of data being protected Amount of time between point-in-time images Number of images that are kept
  B. Change rate of data being protected Network bandwidth Number of images that are kept
  C. Size of the production volume Amount of time between point-in-time images Number of images that are kept
  D. Change rate of data being protected Number of volumes in a Consistency Group Number of images that are kept
  A. Change rate of data being protected Amount of time between point-in-time images Number of images that are kept

• Question 129:

  Data compression uses what other feature to reduce the amount of capacity a LUN uses?

  A. Thin provisioning
  B. FAST VP
  C. FAST Cache
  D. Deduplication
  A. Thin provisioning

• Question 130:

  Refer to the exhibit.

  

  The array has only the disks shown on the exhibit. All disks in the array are 600 GB 15K drives. One disk is used as a hot spare.

  What is the maximum number of disks you can add to a single pool?

  A. 25
  B. 29
  C. 24
  D. 16
  A. 25