EMC DES-1721 Actual Free Exam Questions & Community Discussion

Exam Code/Number: DES-1721
Exam Name/Title: Specialist - Implementation Engineer, SC Series Exam
Certification Provider: EMC
Corresponding Certification: DECS-IE

Exam Questions: 150
Updated On: Jul 11, 2026

Question #11

Based on the exhibit:

Based on the exhibit, a customer is using Virtual Port Mode. If the primary path for the controller on the "left" is disconnected while running an IOmeter test for a volume owned by the "left" controller, will the system survive failover?

A. No, the system does not have reserved paths to perform failover.

B. Yes, Virtual Port Mode will failover the I/O through the other available paths.

C. Yes, the reserved path will be active and I/O will continue.

D. No, Virtual Port Mode does not support port failover.

Discussion 0

Correct Answer: D Vote an answer

Question #12

When creating a new server in Unisphere Central for SC Series, what should show up automatically if it has been properly configured on the host?

A. HBA

B. Name

C. OS

D. MPIO

Discussion 0

Correct Answer: B Vote an answer

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Question #13

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

A. 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.

B. 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

C. 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.

D. 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.

Discussion 0

Correct Answer: A Vote an answer

Question #14

Which best practices should be followed when using iSCSI to connect SC Series arrays and hosts for switches that incorrectly negotiate speed and duplex?

A. Use a separate subnet or switches for iSCSI trafficAuto-negotiate for all switchesEnsure switches used for iSCSI are of a blocking design

B. Use a separate supernet or switches for iSCSI trafficGigabit full duplex hard set for all iSCSI portsEnsure switches used for iSCSI are of a blocking design

C. Use a separate VLAN or switches for iSCSI trafficGigabit full duplex hard set for all iSCSI portsEnsure switches used for iSCSI are of a non-blocking design

D. Use a separate VLAN or switches for iSCSI trafficAuto-negotiate for all switchesEnsure switches used for iSCSI are of a non-blocking design

Discussion 0

Correct Answer: C Vote an answer

Question #15

Based on documented best practices, which options may need to be modified on a server QLogic HBA?

A. Enable Target Reset and Login Retry Count

B. Port Down Retry Count and Enable LIP Reset

C. LUNs Per Target and Port Down Retry Count

D. Port Down Retry Count and Enable Target Reset

Discussion 0

Correct Answer: D Vote an answer

Question #16

What is the HDD size that enforces dual redundancy?

A. 3 TB and higher

B. 4 TB and higher

C. 2 TB and higher

D. Up to 3 TB

Discussion 0

Correct Answer: C Vote an answer

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Question #17

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

A. 2

B. 4

C. 3

D. 1

Discussion 0

Correct Answer: D Vote an answer

Question #18

You are going to install a SC Series running SCOS 7.3.x with 15K and 7K disks. What Data Reduction option will be available on this system?

A. Compression

B. Deduplication with Compression

C. Deduplication

D. Compression with Rehydrate

Discussion 0

Correct Answer: B Vote an answer

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Question #19

A customer wants to map an existing volume to a new server connected through iSCSI. What is the correct sequence of steps to complete this task?

Discussion 0

Correct Answer:

Question #20

A customer wants to add an iSCSI path to a Microsoft Windows Server 2012 R1. The server has an existing Fibre Channel path to an SC7020 array for load balancing and high availability.
Which Windows MPIO policy should be configured to achieve the customer's requirement?

A. Weighted Paths

B. Round Robin with Subset

C. Fail Over Only

D. Round Robin

Discussion 0

Correct Answer: D Vote an answer

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