Effective Study Techniques for the EMC DES-1721 Exam

Questions 1

What is the correct sequence of steps to enable MPIO on a Microsoft Windows 2012 Server?

DES-1721 Question 1

Options:

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Questions 2

To achieve redundancy, how many connections from the same SC Series controller are required per fault domain?

Options:

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Questions 3

An alert for a failed disk is visible under the alerts tab. Where would someone navigate to, in Unisphere Central for SC Series to identify the failed drive and have a graphical representation showing where in the enclosure the failed drive is located?

Options:

System menu, Hardware submenu, Disks

Hardware tab, then Enclosure in navigation tree

Storage menu, Disks

Storage tab, then Disks in the navigation tree

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Questions 4

When installing DSM using an external SQL database what is a mandatory requirement?

Options:

Windows authentication

Mixed mode authentication

Microsoft SQL Server 2016

Microsoft SQL Server 2012

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Questions 5

A SC5020 has been installed and it is using front-end SAS. There is a problem on Server A and Server B during Controller failover. Each server has a connection in Fault Domains 1 and 2.

What is wrong?

Options:

Servers must have all connections in a single Fault Domain

Asymmetric Logical Unit Access (ALUA) is not properly configured

SC5020 does not support SAS as the front-end

SAS switch configuration issue

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Questions 6

Refer to the exhibit.

DES-1721 Question 6

When scanning Fibre Channel on a QLogic HBA what information can be obtained?

Options:

The volume mapped to the QLogic HBA

WWN of the QLogic HBA

WWN of the connected Storage Center

WWN of the SAN switch

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Questions 7

Which best practices should be followed when using iSCSI to connect SC Series arrays and hosts?

Options:

Use dedicated switches for iSCSI.Two separate VLANS for multipathed iSCSI using separate IP subnets.Gigabit full duplex between Storage Center and all local servers.

Use separate IP subnets for multipathed iSCSI separated by VLANS when using the same switch.Gigabit full duplex between Storage Center and all local servers

Use separate switches for iSCSI.Two separate VLANs for multipathed iSCSI using separate IP subnets.Unicast and multicast storm control enabled on all iSCSI switches.

Use separate VLANs for multipathed iSCSI using separate IP subnets when using the same switch.Bi-directional flow control disabled between Storage Center and servers.

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Questions 8

You just finished racking a SC7020 array. After powering it on, you notice there is no indicator LED on the front or back of the array, but the fans are spinning.

What could be the cause?

Options:

220VAC is being used. The system is preventing a fire hazard

Controllers are misplaced. Swap the position of the controllers

110VAC is being used on the power mains

The SC is overheated; let it cool down

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Questions 9

Which SC Series array feature simplifies iSCSI connectivity and allows access to all ports through redirection?

Options:

Legacy Port Mode

ISNS

ALUA

Virtual Port Mode

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Questions 10

You recently deployed two SC9000 storage arrays at a customer site one week ago and verified that everything was working correctly with replication. However, the customer notifies you that every time they tested disaster recovery (DR), they lost access to the volumes when the DR array shut down.

Why did the volumes become inaccessible during testing?