최신EMC VNX Solutions Expert Exam for Implementation Engineers - E20-885무료샘플문제
문제1
You configure an EMC VNX for iSCSI-attached Linux hosts. The customer's application generates small, random I/O and the data is frequently re-accessed. The customer has a limited number of flash drives available. Which VNX performance feature would you recommend?
You configure an EMC VNX for iSCSI-attached Linux hosts. The customer's application generates small, random I/O and the data is frequently re-accessed. The customer has a limited number of flash drives available. Which VNX performance feature would you recommend?
정답: D
문제2
A DBA wants to create a replicated, recoverable copy of an Oracle 11g database environment that will reside on a number of EMC VNX target drives.
The DBA performs the following:
-Puts the required tablespaces in hot backup mode
-Issues a checkpoint to the database
-Synchronizes and fractures the Oracle device pairs
-Ends hot backup mode
-Brings the replicated copy online
What action must the DBA take to enable the copy to start up successfully?
A DBA wants to create a replicated, recoverable copy of an Oracle 11g database environment that will reside on a number of EMC VNX target drives.
The DBA performs the following:
-Puts the required tablespaces in hot backup mode
-Issues a checkpoint to the database
-Synchronizes and fractures the Oracle device pairs
-Ends hot backup mode
-Brings the replicated copy online
What action must the DBA take to enable the copy to start up successfully?
정답: D
문제3
You are investigating a performance problem on a VNX. The customer is using the array for storage for their VMware servers, which is connected through a dual port 10G iSCSI IO module. They have divided the available disks into two separate Storage Pools.
They are seeing 40% CPU usage on SPA and 85% CPU usage on SPB. After investigating, you find that all LUNs in the second Storage Pool are now owned by SPB.
How should this be explained?
You are investigating a performance problem on a VNX. The customer is using the array for storage for their VMware servers, which is connected through a dual port 10G iSCSI IO module. They have divided the available disks into two separate Storage Pools.
They are seeing 40% CPU usage on SPA and 85% CPU usage on SPB. After investigating, you find that all LUNs in the second Storage Pool are now owned by SPB.
How should this be explained?
정답: B
문제4
A customer has implemented RecoverPoint/CDP to replicate their Oracle database environment. They must be able to recover the database in the event corruption occurs during replication. What action do you recommend to ensure a point-in-time recoverability of the database?
A customer has implemented RecoverPoint/CDP to replicate their Oracle database environment. They must be able to recover the database in the event corruption occurs during replication. What action do you recommend to ensure a point-in-time recoverability of the database?
정답: B
문제5
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?
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?
정답: B
문제6
Click on the calculator icon in the upper left-hand corner.
A SQL database requires 1,000 I/O per second with 85% reads and 15% writes. If RAID
1/0 is used, what is the total number of spindles required to generate the required I/O per second?
Click on the calculator icon in the upper left-hand corner.
A SQL database requires 1,000 I/O per second with 85% reads and 15% writes. If RAID
1/0 is used, what is the total number of spindles required to generate the required I/O per second?
정답: A
문제7
A customer runs a CAD/CAM application on an EMC VNX for File. The application is accessed by users at multiple sites. The users report degraded response during peak access periods.
Performance monitoring of the file system shows a higher than expected disk queue length and a higher than expected number of unused blocks pre-fetched. What is the likely cause of the performance issue?
A customer runs a CAD/CAM application on an EMC VNX for File. The application is accessed by users at multiple sites. The users report degraded response during peak access periods.
Performance monitoring of the file system shows a higher than expected disk queue length and a higher than expected number of unused blocks pre-fetched. What is the likely cause of the performance issue?
정답: C
문제8
You have completed the installation of a RecoverPoint/SE cluster using Deployment Manager. You log into Unisphere for the VNX and look at the Storage Group for the RPAs.
Which RecoverPoint volume type(s) will be in the Storage Group?
You have completed the installation of a RecoverPoint/SE cluster using Deployment Manager. You log into Unisphere for the VNX and look at the Storage Group for the RPAs.
Which RecoverPoint volume type(s) will be in the Storage Group?
정답: C
문제9
Refer to the exhibit.
During an Incremental SAN Copy bulk copy session, on the Source LUN, data blocks A, B, C, and D are all transferred to the Destination LUN. Before data block E can be sent to the Destination LUN, data blocks B and E are updated and become data blocks B` and E`.
What data will be shown in the Transfer DeltaMap, Tracking DeltaMap, and Destination LUN once the start copy session is complete?
Refer to the exhibit.
During an Incremental SAN Copy bulk copy session, on the Source LUN, data blocks A, B, C, and D are all transferred to the Destination LUN. Before data block E can be sent to the Destination LUN, data blocks B and E are updated and become data blocks B` and E`.
What data will be shown in the Transfer DeltaMap, Tracking DeltaMap, and Destination LUN once the start copy session is complete?
정답: A
문제10
A customer RP/SE environment consists of a single cluster running two vRPAs. They currently have 74 Consistency Groups configured and replicating. The customer wants to know what effect an RPA failure would have.
What should you tell them?
A customer RP/SE environment consists of a single cluster running two vRPAs. They currently have 74 Consistency Groups configured and replicating. The customer wants to know what effect an RPA failure would have.
What should you tell them?
정답: B
문제11
A customer plans to implement shared vSphere datastores using the NFS protocol in their environment. Their VMware support staff has concerns about their administration of these datastores. What features of vSphere v5 would you discuss with them to address their concerns?
A customer plans to implement shared vSphere datastores using the NFS protocol in their environment. Their VMware support staff has concerns about their administration of these datastores. What features of vSphere v5 would you discuss with them to address their concerns?
정답: C
문제12
You are setting up Perfmon to record the number of I/O per second for a customer's clustered SQL Server prior to a migration to an EMC VNX. Which Perfmon counter should you add to the log view to obtain this information?
You are setting up Perfmon to record the number of I/O per second for a customer's clustered SQL Server prior to a migration to an EMC VNX. Which Perfmon counter should you add to the log view to obtain this information?
정답: A
문제13
A customer has DR enabled between their primary and backup sites using EMC VNX and MirrorView. SnapView Snapshots are enabled at the backup site. A third VNX array is installed at the backup site. The customer tries to use Incremental SAN Copy (ISC) to pull data updates from a SnapView snapshot onto stopped Web server LUNs located on the new VNX. The customer reports they are not able to configure the SAN Copy session.
Why does the customer need to rework this solution?
A customer has DR enabled between their primary and backup sites using EMC VNX and MirrorView. SnapView Snapshots are enabled at the backup site. A third VNX array is installed at the backup site. The customer tries to use Incremental SAN Copy (ISC) to pull data updates from a SnapView snapshot onto stopped Web server LUNs located on the new VNX. The customer reports they are not able to configure the SAN Copy session.
Why does the customer need to rework this solution?
정답: D
문제14
A customer is asking you for help. They are creating a script that will collect data from the array using CLI from the Control Station. They want to gather information on LUN data consumption including metadata, snapshot and compression.
Which command will gather this information?
A customer is asking you for help. They are creating a script that will collect data from the array using CLI from the Control Station. They want to gather information on LUN data consumption including metadata, snapshot and compression.
Which command will gather this information?
정답: B