最新的EMC E20-816免費考試真題

問題1

A customer is planning an Oracle 11g implementation. You have been assigned to design the Oracle storage architecture. You recommend placing redo logs files on separate drives from other Oracle files. Your customer wants an explanation of this architecture choice. What best describes the reason for this EMC recommendation?

A. Redo logs read performance can affect the performance of the entire database

B. Redo logs on the same drives as the Oracle Data files is not supported

C. Redo logs write performance can affect the performance of the entire database

D. Separation ensures that disk failure will not result in losing the entire database

正確答案: C

問題2

A customer is planning a new Exchange 2010 environment on their EMC VMAX. The customer asks how they can backup volumes containing passive mailbox database copies. What do you advise the customer?

A. Only the VSS plug-in that ships with Exchange 2010 can be used.

B. Use Replication Manager or a third-party Exchange-aware VSS-based application.

C. Custom backup scripts will need to be created.

D. The VSS plug-in that ships with Exchange 2010 or Replication Manager can be used.

正確答案: B

問題3

A company plans to deploy Symmetrix VMAX arrays in their VMware vSphere environment. The ESXi hosts will be connected to the VMAX arrays over a FC SAN. What VMAX FA port flag must be enabled?

A. SCSI_Support

B. VCM_State

C. Volume_Set_Addressing

D. SPC2_Protocol_Version

正確答案: D

問題4

A new data warehouse will be hosted on an existing 4-engine VMAX array. The database server has 4 HBAs connected at 4Gb/s. Due to limited SAN switch ports only port 0 on each VMAX FA is connected - also at 4Gb/s.
The workload is expected to require at least 2300MB/s of reads at 128KB I/O size and must maintain performance in case of any major component failure in the host, switch or array. Assume that the existing workload on the VMAX does not exceed 100MB/s per port and assume that the ports can sustain up to 300MB/s without exceeding 70% utilization.
What is the minimum number of FA ports needed to spread the workload evenly across all 4 VMAX engines and meet the above performance requirements?

A. 16 FA ports, 4 per director

B. 16 FA ports, 4 per engine

C. 12 FA ports, 3 per engine

D. 24 FA ports, 3 per director

正確答案: B

問題5

How can a storage administrator restrict storage management access for any host that has not been granted explicit symacl rights?

A. Restrict gatekeeper masking to only management hosts.

B. Implement Symmetrix Array Authorization (symauth).

C. Remove default permissions from UnknwGrp access group.

D. Unmap the access logix database device from all non management FAs.

正確答案: C

問題6

A customer has the following storage configuration for a specific application:
-Symmetrix VMAX 4 engine with 128 GB cache per engine
-SRDF/A with two 1 Gbps links to remote site
-4.2 TB of logical volumes configured for SRDF/A replication
-SMC / SPA installed for storage management
The customer is periodically experiencing high response times for the application.
How can the customer use SPA to determine the potential cause of the high response times?

A. View Ports FE throughput in Kbps versus Devices Kbps read + Devices Kpbs written

B. View RDF-Group (group number) rewrites per sec

C. View SRDF/A device write pending count versus system write pending count

D. View Directors BE % busy versus Directors FE % busy

正確答案: C

問題7

Click on the calculator icon in the upper left corner.
A customer is bringing up a new ESX farm and will be provisioning 50TB of storage from Symmetrix pool storage. They will create 25 2TB Data Stores which will be assigned to six Storage Ports. What will be the size of the LUNS presented to the Cluster?

A. 250

B. 250

C. 125

D. 325

正確答案: D

問題8

A new EMC customer recently installed their first VMAX and a complete suite of EMC management tools. Their lead capacity planner attended training and has started monitoring the VMAX. You receive a call and this person describes the measurements observed. During the period of heaviest workload, reported throughput on certain Fibre Channel ports is nearing 150,000 KB/second but those ports display only about 10% utilization. What is the likely cause?

A. I/O block size is very small

B. Sequential prefetch skews throughput %

C. I/O block size is very large

D. Striped metavolumes report invalid IOPS

正確答案: C

問題9

Refer to the exhibit.

A customer needs to comply with government regulations on information security of data-at-rest at the remote Symmetrix location. Which two EMC products would provide compliance?

A. Secure Erasure, RADIUS

B. PowerPath Encryption, IPSec

C. PowerPath Encryption, Secure Credential

D. Secure Erasure, PowerPath Encryption

正確答案: D

問題10

Refer to the exhibit.

A customer is reviewing the overall SAN Fabric and needs to determine data access risk points. Which numbered item will provide an intruder access to the SAN Space?

A. 3

B. 4

C. 2

D. 1

正確答案: C

問題11

A customer connected a new Microsoft Exchange 2010 server to their VMAX array. The server has PowerPath installed. The customer asks which failover policy they should use for best performance.
Which failover policy do you recommend?

A. Symmetrix Optimized

B. Basic Failover

C. Fail Over Only

D. Round Robin Load Balancing

正確答案: A

問題12

What are the EMC recommended symacl permissions that should be assigned for the Symmetrix Service Processor?

A. Assign ADMINRD, VLOGIX, and OPTMZR permissions for the Service Processor.

B. Assign ADMINRD, BASE, and OPTMZR permissions for the Service Processor.

C. No permissions are required, the Service Processor operates independent of symacl.

D. Assign ECC, and OPTMZR permissions for the Service Processor.

正確答案: B

問題13

What describes a restartable database in an Oracle environment?

A. A copy of a database using consistency technology by putting the database in cold backup mode

B. A copy of a database in which transaction logs can be applied to the data files

C. A copy of a database in which Oracle data files are always synchronized

D. A copy of a database using consistency technology without putting the database in hot backup mode

正確答案: D

問題14

A customer reports their hosts are performing slowly after migration to a new VMAX array.
You review performance data from the VMAX and note the following:
-I/O sizes are 16 KB.
-The front-end director ports are operating at 1 GB auto-negotiate.
-Several front-end director ports are approaching 100% utilization.
-A few director ports show little or no utilization.
What do you advise the customer?

A. Rebalance the hosts across all available FA ports and consider setting the front-end director ports to 2 GB or higher.

B. Rebalance the hosts across all available FA ports and consider upgrading the SAN switch ports to 2 GB or higher.

C. Reduce the number of hosts that are accessing the VMAX and consider implementing iSCSI connectivity.

D. Add more HBAs to each host accessing the VMAX and consider setting the host I/O size to 8 KB or less.

正確答案: B

問題15

Refer to the exhibit.

A Customer is designing FAST policies to be implemented. Which FAST policy is valid?

A. Policy 4

B. Policy 3

C. Policy 2

D. Policy 1

正確答案: A

最新的EMC Symmetrix Solutions Expert Exam for Technology Architects - E20-816免費考試真題

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