EMC E20-885 Online Practice Questions and Exam Preparation

EMC E20-885 Online Questions & Answers

• Question 241:

  You are implementing a VNX solution for a Linux-only host environment. The customer tells you that current host performance is poor, and that the new solution should improve it by at least 50%. Which tool should you use to begin your investigation?

  A. iostat
  B. Unisphere Analyzer
  C. IOmeter
  D. server_stats
  A. iostat

• Question 242:

  A system administrator wants to migrate medical-imaging data stored on an EMC VNX. The host connects to the VNX via iSCSI. The IP SAN infrastructure has recently been updated to support 1 Gb/10 GB switching. The system administrator wants to maximize data transfer performance. What would you recommend?

  A. Implement 10 Gb/s iSCSI connection using a 9000 byte frame.
  B. Use a 4 KB memory page size.
  C. Implement 10 Gb/s iSCSI connection using a 2400 byte frame.
  D. Increase the write-aside value.
  A. Implement 10 Gb/s iSCSI connection using a 9000 byte frame.

• Question 243:

  A customer recently installed vSphere ESXi 5.0 on a five host cluster attached to an EMC VNX using FCoE. EMC PowerPath/VE with a full license is installed on all hosts in the cluster. What is the default load balancing policy that will be used?

  A. Round Robin
  B. clar_opt
  C. No redirect
  D. Least_I/O
  B. clar_opt

• Question 244:

  Click on the calculator icon in the upper-left hand corner. There are 100 GB in updates to the transaction logs for an SQL server over an eight-hour business day. How many I/O per second are required to support the workload?

  A. 455
  B. 657
  C. 546
  D. 776
  A. 455

• Question 245:

  A customer is implementing a DR solution for their CIFS file systems in an EMC VNX for File environment. The customer must ensure all configuration settings are available on the secondary site, in case of a disaster. Which VNX features need to be configured to meet the customer's DR requirements?

  A. CIFS, Usermapper and Replicator
  B. CIFS, VDMs and Replicator
  C. VDMs, Replicator and CAVA
  D. CIFS, CAVA and Replicator
  B. CIFS, VDMs and Replicator

• Question 246:

  Which RecoverPoint/SE Consistency Group copy consists of all of the volumes that are the targets of replication for a specific Consistency Group?

  A. Local Copy
  B. Production Copy
  C. Repository Volume
  D. Journal Volume
  A. Local Copy

• Question 247:

  A customer plans migrate several Exchange 2010 databases to a new RAID 5 storage pool on an EMC VNX. The VNX has the FAST Cache and FAST VP enablers installed. Exchange 2010 is installed on a vSphere guest.

  What performance best practice should be considered when migrating Exchange 2010 to the storage pool?

  A. Use thick LUNs in the storage pool.
  B. Enable FAST VP for the storage pool.
  C. Enable FAST cache for the storage pool.
  D. Use eager zeroed thin LUNs in the storage pool.
  A. Use thick LUNs in the storage pool.

• Question 248:

  You are planning a CIFS DR solution with an EMC VNX for File. The customer wants to use LACP (Link Aggregation Control Protocol) on the Data Movers to provide additional network redundancy for the solution. What do you advise the customer regarding Data Mover interfaces and CIFS servers for the DR solution?

  A. Identical interface names must be used on the source and destination VNX systems.
  B. Identical interface IP addressing is required for the source and destination VNX systems.
  C. The CIFS server interface is an object that gets replicated with the Virtual Data Mover.
  D. The Virtual Data Mover will use any available interface on the Data Mover for the CIFS server.
  A. Identical interface names must be used on the source and destination VNX systems.

• Question 249:

  You are implementing FAST Cache. You want to disable FAST Cache on any LUNs that do not have the correct I/O access pattern for FAST Cache. All LUNs are 4+1 R5, with sizes between 50 GB and 500 GB. Which answer shows an access pattern that should be avoided?

  A

• Question 250:

  You have implemented Block Deduplication on a pool servicing a workload with a 60:40 read/write ratio, and consisting of small random IOs. This pool contains a large amount of duplicate data. After the first few deduplication processes, you notice that host response time has increased significantly.

  What could be the cause of this impact on performance?

  A. A write ratio of more than 30%
  B. A workload with small random IOs
  C. A large amount of static data
  D. A small amount of unique data
  A. A write ratio of more than 30%