E20-555 EMC Exam Questions and Free Practice Test

Question 25

If snapshots are configured for the InsightIQ datastore on Isilon and the datastore is reverted to a previous snapshot, what might be the result?

A. InsightIQ datastore cannot be reverted

B. InsightIQ database will have to be manually copied from the snapshot

C. InsightIQ datastore could be corrupted

D. InsightIQ will not recognize the older copy of the database

Correct Answer:C
Do not use snapshots of the InsightIQ data store. If you revert a snapshot of the InsightIQ data store or modify the contents of the data store in any way, the InsightIQ data store might become corrupted.

Question 26

You are helping a customer create a cost-effective Isilon solution. The customer environment includes high IOPS-intensive, random access file-based applications.
Which Isilon storage node type will meet the customer's needs?

A. S-Series

B. NL-Series

C. X-Series

D. Performance Accelerator

Correct Answer:A

Question 27

Which provider supports authentication and lookup facilities for local users and groups that have been defined and are maintained on the cluster?

A. AD

B. File

C. NIS

D. Local

Correct Answer:D

Question 28

How does Isilon SnapshotIQ use storage for snapshots?

A. Through Changed Block Tracking and only changed data blocks are saved

B. Works on the file level and saves the entire file no matter what has changed

C. Works with 4 KiB blocks and will always use that amount of storage, no matter what has changed

D. Through Changed Block Tracking and always uses a 4 KiB block, even if the data changed is less than that amount

Correct Answer:A

Question 29

An Isilon customer has two 5-node clusters; one for production and one for disaster recovery (DR). The customer's workflows are replicated to the DR cluster through SyncIQ on individual schedules. They shutdown their production cluster for a scheduled DR test, failed over to the DR cluster, and continue their DR testing.
Assume both clusters have identical shares, exports, and user authentication and that the client applications have been stopped and the DNS re-pointed. What is the correct method to continue production operations?

A. Revert the SyncIQ Policy

B. Initiate Manual Failback of the SyncIQ Policy

C. Initiate Automated Failback of the SyncIQ Policy

D. No change to the SyncIQ Policy

Correct Answer:A

Question 30

An Isilon customer wants a job to periodically validates the checksum of every block in the file system. What should be recommended to the customer?

A. IntegrityScan

B. MediaScan

C. Dynamic Sector Repair

D. Isilon Data Integrity

Correct Answer:A

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