EMC Implementation Engineer E20-885 Questions & Answers

• Question 1:

  Refer to the exhibit.

  

  You are deploying an EMC RecoverPoint/SE.

  Which callout in the exhibit corresponds to the RecoverPoint Appliance (RPA) WAN port?

  A. A

  B. B

  C. C

  D. D

  Correct Answer: A

• Question 2:

  Refer to the exhibit.

  

  You are deploying an EMC RecoverPoint/SE.

  Which callout in the exhibit corresponds to the port you would use for Remote Management Connectivity?

  A. A

  B. B

  C. C

  D. D

  Correct Answer: B

• Question 3:

  Refer to the exhibit.

  

  A VNX Snapshot is started on a thick LUN at 09:37. The customer notices that throughput declines after

  09:49

  or so. They want to know how Primary LUN throughput will decrease further over time. What should be your explanation?

  A.

  Primary LUN throughput will decrease until it reaches thin LUN performance levels.

  B.

  The number and type of Reserved LUNs will determine the lower limit of Primary LUN performance.

  C.

  Pool disk sizes and thick LUN compression ratios will set the lower performance bound.

  D.

  The VNX Snapshot read/write ratio and IO size will determine primary LUN performance level.

  Correct Answer: A

• Question 4:

  Refer to the exhibit.

  

  A VNX Snapshot is started on a thick LUN at 09:37. The customer wants to know why throughput drops gradually after the 09:49 data point.

  What should be your explanation?

  A. VNX Snapshot and thick LUN slices are some distance apart, increasing disk seeks.

  B. Additional Reserved LUNs are being allocated to the thick LUN.

  C. The rate of thick LUN conversion to a thin LUN is slowing down.

  D. VNX Snapshot blocks on the thick LUN are being migrated, then compressed.

  Correct Answer: A

• Question 5:

  Refer to the exhibit.

  

  You are implementing a new VNX and you are considering whether or not to use FAST Cache. You decide to test the effect on response times with and without FAST Cache.

  At what point in the graph is FAST Cache turned OFF?

  A. D

  B. C

  C. B

  D. E

  Correct Answer: A

• Question 6:

  Refer to the exhibit.

  

  You are implementing a new VNX and you are considering whether or not to use FAST Cache. You decide to test the effect on response times with and without FAST Cache.

  At what point in the graph do you consider the warm-up period to be complete?

  A. C

  B. B

  C. D

  D. E

  Correct Answer: A

• Question 7:

  Refer to the exhibit.

  

  LUN 30 is a 50 GB LUN on a 4+1 R5 group consisting of 300 GB drives. It is the only active LUN. I/O size is 4 kB.

  What can you infer about the I/O access pattern to LUN 30?

  A. I/O is bursty.

  B. Coalescing is occurring.

  C. LUN I/O is single-threaded.

  D. Full stripe writes are occurring.

  Correct Answer: A

• Question 8:

  What do primary and standby Control Stations use to monitor each other?

  A. nasmcd

  B. shared quorum disk

  C. nbsnas

  D. nasdb

  Correct Answer: B

• Question 9:

  Refer to the exhibit.

  

  LUN 30 is a 50 GB LUN on a 4+1 R5 group consisting of 300 GB drives. It is the only active LUN. What can you infer about the I/O access pattern to LUN 30?

  A. I/O is very random.

  B. I/O is largely sequential.

  C. Locality of reference is high.

  D. Locality of reference is low.

  Correct Answer: A

• Question 10:

  When creating a clone, what size must the clone be when compared to the source LUN?

  A. Two times the size of the source LUN

  B. The same size of the source LUN

  C. Half the size of the source LUN

  D. Four times the size of the source LUN

  Correct Answer: A