Dell Dell Certifications DES-1721 Questions & Answers

• Question 31:

  After the implementation of a DR site with Synchronous replication all applications were up and running fine. The restore points were saved and validated; DR was predefined and successfully tested. Sometime later, one of the applications became unresponsive and initial troubleshooting points to Storage/Volume as the root cause.

  Concerning the Replication to the DR site, what could be happening?

  A. Customer must switch to asynchronous replication as volumes tied to applications should not be synchronous replicated.

  B. The synchronous replication has been set to High Consistency and the link between the two sites is down.

  C. Unresponsive applications cannot be related to any DR or Replication practices

  D. Only asynchronous replication can possibly have a negative impact to volumes and applications if the link is down

  Correct Answer: C

• Question 32:

  After an initial implementation of a SC Fibre Channel front-end, during the failover test one of the controllers gets reset. All Virtual WWNs from the reset controller are migrated to a single port of the remaining controller.

  What corrective action should be taken?

  A. Check cabling, FC Zoning or Fault Domains for incorrect configuration and revise as needed

  B. Incorrect cables used, re-cable as needed

  C. This is the expected behavior and the test completed successfully

  D. FC zoning is not enabled, enable zone config

  Correct Answer: A

• Question 33:

  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?

  A. Servers must have all connections in a single Fault Domain

  B. Asymmetric Logical Unit Access (ALUA) is not properly configured

  C. SC5020 does not support SAS as the front-end

  D. SAS switch configuration issue

  Correct Answer: D

• Question 34:

  What is the name of the out-of-band system management connection for SC9000 systems?

  A. iDRAC

  B. MMC

  C. IPMI

  D. iLo

  Correct Answer: A

• Question 35:

  Refer to the exhibits.

  Which is the correct front end and cabling for an SC7020 with 2 port FC connectivity?

  

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: C

  Reference: https://www.dell.com/support/manuals/us/en/04/dell-compellent-sc4020/sc4020om-v8/two-iscsi-networks-using-the-embedded-ethernet-ports-on-a-storage-system-with-fibre-channel-storag~?guid=guid-55858fd3-2a28-4739-8eace60769d03438andlang=en-us

• Question 36:

  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?

  A. System menu, Hardware submenu, Disks

  B. Hardware tab, then Enclosure in navigation tree

  C. Storage menu, Disks

  D. Storage tab, then Disks in the navigation tree

  Correct Answer: D

• Question 37:

  What type of Host connectivity is required for Live volume?

  A. FCoE

  B. MPIO

  C. TOE Host Bus Adapter

  D. Target Initiator to the Primary system

  Correct Answer: A

  Reference: https://www.dell.com/community/Compellent/Compellent-Live-Volume/td-p/5848151

• Question 38:

  

  Refer to the exhibit.

  Starting in the upper left corner of the SCv3000 what is the numerical order of the disks across the top row?

  A. 3, 2, 1, 0

  B. 4, 3, 2, 1

  C. 1, 2, 3, 4

  D. 0, 1, 2, 3

  Correct Answer: D

  Reference: https://be02.cp-static.com/objects/pdf/f/f26/1792753_1_disk-arrays-dell-scv3020-3020-2604.pdf (Page 8)

• Question 39:

  How many SAS ports are used on each EMM of an SC460?

  A. 1

  B. 2

  C. 3

  D. 4

  Correct Answer: D

  Reference: https://usermanual.wiki/Dell/storagesc460.900232340/help

• Question 40:

  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?

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

  B. Controllers are misplaced. Swap the position of the controllers

  C. 110VAC is being used on the power mains

  D. The SC is overheated; let it cool down

  Correct Answer: C