EMC EMC Certifications E20-555 Questions & Answers

• Question 161:

  What accurately represents Isilon SyncIQ Automated Failover?

  A. SmartLock directories will automatically failover

  B. Replication relationships will change upon failover

  C. No changes in Identity Management will be needed

  D. Target directories will not need to be shared with clients

  Correct Answer: C

• Question 162:

  An Isilon customer has two 5-node clusters, one for production and one for disaster recovery (DR). The customer's workflow is a SmartLock workflow and is replicated to the DR cluster through SyncIQ on an individual schedule. The customer needs to shutdown their production cluster for scheduled maintenance.

  Assume both clusters have identical shares, exports, user authentication, and that the client applications have been stopped and the DNS re-pointed. What is the correct method to start operations on the DR cluster?

  A. Initiate Manual Failover of the SyncIQ Policy

  B. Initiate Automated Failover of the SyncIQ Policy

  C. No change to the SyncIQ Policy

  D. Revert the SyncIQ Policy

  Correct Answer: B

• Question 163:

  An Isilon customer created a SyncIQ policy to replicate data from a primary cluster to an offsite secondary cluster. The primary cluster becomes unavailable, and the customer has completed a failover onto the secondary cluster.

  The primary cluster becomes available again, so the customer would like to fail back data to the primary cluster. The failback process does not replicate data.

  What is the most likely reason the failback policy does not replicate data to the primary cluster?

  A. Clusters are not sharing an Infiniband switch

  B. Secondary cluster has modified files on it

  C. Original policy was for synchronization

  D. Policy contains a SmartLock directory

  Correct Answer: C

• Question 164:

  A customer is considering moving their NAS data over to Isilon systems. They want to know what limitations Isilon has regarding snapshot on the directory level. What explanation can be provided to the customer?

  A. Limit of 2048 snapshots per directory

  B. No limits on the number of snapshots per directory

  C. Limit of 2048 snapshots per cluster but not on the directory level

  D. Hard limit of 1024 snapshots per directory

  Correct Answer: D

• Question 165:

  A customer has two data centers (Site A and Site B) and in each data center there is an Isilon cluster. They are replicating data between the sites using SyncIQ.

  You have been reviewing their disaster recovery plan and found the following:

  The policies specify that SyncIQ runs a replication job every four hours and that the job finishes within one hour.

  Three additional hours will be needed to get servers and the network redirected to work from Site B.

  What is the Recovery Point Objective in this plan?

  A. 3 hours

  B. 4 hours

  C. 5 hours

  D. 6 hours

  Correct Answer: B

• Question 166:

  Which Isilon SmartLock version uses an NTP server to keep track of the set retention periods placed on a directory?

  A. Standard with WORM

  B. Standard No WORM

  C. Enterprise

  D. Compliance

  Correct Answer: C

• Question 167:

  A customer is able to see some performance metrics in the Isilon OneFS dashboard or by using CLI. Other performance metrics will require InsightIQ.

  What will require a licensed version of InsightIQ?

  A. Capacity Trending

  B. Cluster Throughput

  C. CPU Usage

  D. Active Client Connections

  Correct Answer: B

• Question 168:

  In Isilon OneFS, what is the snapshot limit of a directory?

  A. 512

  B. 1024

  C. 2048

  D. No limit

  Correct Answer: B

  Reference: http://www.emc.com/collateral/hardware/white-papers/h10588-isilon-data-availability-protection-wp.pdf (page 22, 6th bullet)

• Question 169:

  What is a Shadow Store used for in Isilon OneFS?

  A. Shared data for clones and original files

  B. Changed block data for clones and original files

  C. Changed block data for SyncIQ

  D. Changed blocks for SnapshotIQ

  Correct Answer: A

  Reference: http://www.emc.com/collateral/hardware/white-papers/h10588-isilon-data-availability-protection-wp.pdf (page 22, see file clones)

• Question 170:

  When working with Isilon file pool policies, which file attribute can be applied as a filter?

  A. Performance

  B. File create date

  C. File type

  D. Permissions

  Correct Answer: C

  Reference: http://www.emc.com/collateral/hardware/white-papers/h8321-wp-smartpools-storage-tiering.pdf (page 20, first para)