EMC EMC Certifications E20-555 Questions & Answers

• Question 31:

  What happens to worker threads running on the same node when there is an excessive number of workers running at the same time?

  A. Workers are paused

  B. Workers are queued

  C. Impact level of workers is decreased

  D. Priority level of workers is decreased

  Correct Answer: B

• Question 32:

  Which cache type contains data blocks from previous read and write transactions?

  A. Metadata stored on SSDs

  B. L2 cache

  C. L1 cache

  D. L3 cache

  Correct Answer: D

  Reference: https://repository.usc.edu/sites/repository.usc.edu/files/isilon_onefs_overview.pdf

• Question 33:

  You are designing a backup solution using an NDMP redirector and throttler. What is the default threshold percentage of CPU resources that the throttler limits NDMP to?

  B. 45

  C. 50

  D. 60

  Correct Answer: C

  Reference: http://doc.isilon.com/onefs/8.2.0/help/en-us/ifs_t_enable_ndmp_throttler.html

• Question 34:

  Three jobs of different exclusion sets with a priority level of 5 are concurrently running on a cluster. A new job with a priority of 4 needs to be run. What does the Job Engine do?

  A. Pauses a priority 5 job and runs the new job until completion, then restarts the paused job from the beginning

  B. Pauses all priority 5 jobs and runs the new job until completion, then restarts the paused job

  C. Queues the old job of the same exclusion set until the job with a higher priority completes

  D. Runs the new job in parallel with the other running jobs

  Correct Answer: A

  Reference: http://doc.isilon.com/onefs/7.1.1/help/en-us/GUID-C8094DAD-330E-4110-82A8-B97FEFB2D89A.html

• Question 35:

  In a multi-tenant environment, which OneFS feature can be used to isolate and secure data from each tenant?

  A. Groupnets

  B. ZRBAC

  C. Access Zones

  D. RBAC

  Correct Answer: C

  Reference: https://www.slideshare.net/emcacademics/h13564-wpemcisilonanalyticsmultitenancy (6)

• Question 36:

  How are files smaller than 128 KB protected?

  A. 3x mirrored

  B. N+3d:1n

  C. N+2d:1n

  D. 2x mirrored

  Correct Answer: A

  Reference: http://webcache.googleusercontent.com/search?q=cache:2rNjWq1ozJIJ:doc.isilon.com/onefs/5.5.x/webhelp/en-us/Content/rdu1254425851461.htmlandclient=firefox-b-eandhl=enandgl=pkandstrip=1andvwsrc=0

• Question 37:

  A customer has two Isilon clusters in an Active-Passive setup. The customer has latency sensitive media editing workflows. Most of the media editing work occurs prior to broadcasting between 7:00-8:00, 11:00-12:00, 17:00-18:00 and 19:00

  20:00.

  What should be recommended to minimize the risk of including latency to the client workflow?

  A.

  Retain the default job impact policies that would run the Job Engine jobs. Do not run SyncIQ policies during the given hours.

  B.

  Create and set a custom job impact policy that would exclude the running SyncIQ policies during the given hours.

  C.

  Create and set a custom job impact policy that would exclude the running of the Job Engine jobs. Do not run SyncIQ policies during the given hours.

  D.

  Retain the default job impact policies that would run the Job Engine jobs. Run SyncIQ policies during the given hours.

  Correct Answer: C

• Question 38:

  A customer has two Isilon clusters. Cluster 1 has eight H500 nodes and cluster 2 has twelve H500 nodes. The customer needs to be able to monitor real time performance data of the clusters as well as track file growth. Which supported tool should be recommended?

  A. InsightIQ

  B. Data Insights

  C. Unisphere

  D. isi statistics

  Correct Answer: A

  Reference: https://www.dell.com/community/Isilon/How-do-you-calculate-usable-capacity-for-Isilon/td-p/6934338

• Question 39:

  The protection level of an Isilon Gen 6 cluster with eight nodes has been set to the default protection level. How many failures are tolerated without data loss?

  A. Two drives or one node

  B. Two drives and one node

  C. Two drives in every node

  D. Three drives or three nodes

  Correct Answer: A

• Question 40:

  When designing a SmartConnect IP pool, what is the recommended IP address pool allocation method and protocol state for SMB?

  A. Dynamic, stateful

  B. Static, stateless

  C. Dynamic, stateless

  D. Static, stateful

  Correct Answer: A

  Reference: https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h16463-isilon-advanced-networking-fundamentals.pdf