EMC EMC Certifications E20-555 Questions & Answers

• Question 51:

  A four node F800 Isilon cluster running OneFS 8.2.1 has a dedicated subnet and IP pool for SMB data traffic. SmartConnect Advanced license is applied. The SMB IP pool consists of LACP aggregated. 10GigE interfaces from all the nodes. What is the maximum number of SmartConnect Service IPs recommended for the SMB subnet?

  A. 1

  B. 2

  C. 4

  D. 6

  Correct Answer: A

  Reference: https://www.dellemc.com/en-us/collaterals/unauth/white-papers/products/storage/h16857-wp-onefs-best-practices.pdf (19)

• Question 52:

  DRAG DROP

  A customer is trying to read data from Node 1 to Node 5 in an Isilon cluster. The two Isilon nodes have the same content in the private caches. Cached data is consistent across both instances. What is the correct sequence of steps that OneFS uses to ensure that all data is consistent across the entire shared cache?

  Select and Place:

  

  Correct Answer:

  

  Reference https://www.emc.com/collateral/hardware/white-papers/h13249-isilon-onefs-smartflash-wp.pdf

• Question 53:

  A new customer is interested in an Isilon Gen 6 solution to replace their sprawling and outdated Linux environment. Which client tool should you use to establish an estimate of the workload and pattern as an input to the sizing process?

  A. tcpdump

  B. lometer

  C. File System Analytics

  D. iostat

  Correct Answer: C

• Question 54:

  A customer requires a backup to tape of their Isilon cluster. They want advice on whether to implement a two-way NDMP solution or a three-way solution. The front-end network must be used to stream data to the backup solution. Which cost-effective solution will meet their needs?

  A. Two-way including a Backup Accelerator

  B. Three-way without a Backup Accelerator

  C. Three-way including a Backup Accelerator

  D. Two-way without a Backup Accelerator

  Correct Answer: A

• Question 55:

  DRAG DROP

  What is the correct sequence of events in a SyncIQ failover procedure after a failure occurs in the source Isilon cluster?

  Select and Place:

  

  Correct Answer:

  

• Question 56:

  An Isilon has 3 NL410 nodes with 36 2 TB HDDs each. VHS is specified as 3 virtual drives or 15 percent of the node pool. Which configuration would be used as reserved space for VHS?

  A. 15% of the total space in the node pool

  B. 3 virtual drives for each node in the cluster

  C. 15% in the node pool plus 3 virtual drives

  D. 3 virtual drives in the cluster

  Correct Answer: A

• Question 57:

  Three jobs are running, all with a priority of 5. A new job with a priority of 6 needs to be run. What happens?

  A. The job engine pauses a priority 5 job and runs the new job until completion, then restarts the paused job from the point at which it was interrupted.

  B. The job engine runs the new job in parallel with the other jobs.

  C. The job engine pauses a priority 5 job and runs the new job until completion, then restarts the paused job from the beginning.

  D. The job engine queues the new job until one of the currently running jobs completes.

  Correct Answer: D

• Question 58:

  During a write process in OneFS 8.0, from which cache are blocks copied to disk?

  A. L3

  B. L2

  C. Endurant

  D. L1

  Correct Answer: C

• Question 59:

  A customer configures a file pool policy to write data to tier 2 on the Isilon cluster. This is in addition to the 30 policies already created. Later in the week they check the file placement and see that it has not been written to the correct tire. What could be the problem?

  A. Number of allowable policies has been exceeded so the new policy will not run.

  B. File matches a policy for a different tier that is listed higher in the file pool policy list.

  C. SmartPools policy job has not yet run so the file was written using the default policy.

  D. File matches a policy for a different tier that is listed lower in the file pool policy list

  Correct Answer: B

• Question 60:

  A customer is considering the use of RBAC to centrally administer user accounts that can log into multiple Isilon clusters. What is a potential capability for the customer?

  A. Assign users only custom roles with privileges to perform specific administrative tasks

  B. Assign individual privileges for specific administrative tasks directly to user accounts

  C. Assign users built-in or custom roles with privileges to perform specific administrative tasks

  D. Assign users only built-in roles with privileges to perform specific administrative tasks

  Correct Answer: C