EMC DES-1D12 Online Practice Questions and Exam Preparation

EMC DES-1D12 Online Questions & Answers

• Question 141:

  What is a characteristic of single-tier Flash on Dell EMC SC Series arrays?

  A. Supports both write-intensive and read-intensive SSDs in the same tier
  B. Snapshot data is kept on Tier1 in RAID 10 to optimize performance
  C. Read only data is migrated to lower tiers when a snapshot is taken
  D. Supports either write-intensive or read-intensive SSDs in the same tier
  D. Supports either write-intensive or read-intensive SSDs in the same tier

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  Explanation/Reference:

  Reference: https://downloads.dell.com/manuals/common/sc-series-performance-availability-best-practices-dell-emc-4024-bp-sc_en-us.pdf (15)

• Question 142:

  Which Dell EMC Midrange storage platforms support NVMe SCM drives?

  A. PowerStore T and SC Series only
  B. PowerStore T and PowerStore X
  C. PowerStore T, Unity XT, and SC Series
  D. PowerStore X, Unity XT, and SC Series
  B. PowerStore T and PowerStore X

• Question 143:

  What is the function of CMI on a Dell EMC Unity array?

  A. Used for inter-SP communications
  B. Acts as an extension of M.2 memory
  C. Enables Vaulting to Disk
  D. Handles API calls for HTTP client
  A. Used for inter-SP communications

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  Explanation/Reference:

  Common Messaging Interface (CMI): A high speed bus that is used for communication between SPs, such as mirroring write cache or redirecting I/Os from a non-optimized path. Reference:https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h15162-dell_emc_unity-high_availability.pdf

• Question 144:

  Which Dell PowerStore migration method is recommended to remediate an out of space condition?

  A. Assisted Migration
  B. Migrate
  C. Live Migrate
  D. Auto Placement
  A. Assisted Migration

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  Explanation/Reference:

  The assisted migration allows you to move data to a new storage pool with more capacity. This process can be done while the data is still online and accessible to hosts, and it allows you to add or replace drives, expand pools, and move data to a new array without any disruption.

• Question 145:

  A customer has two Dell Unity arrays a Dell Unity 550F and a Dell Unity XT 480 They are undergoing a network refresh and would like to modernize to a 25 GbE network The customer has asked the technical architect about adding 25 GbE network cards to the Unity systems Both systems have free slots

  Which option should the technical architect recommend?

  A. All Unity and Unity XT systems support 25 GbE.
  B. The Unity XT 480 supports a 25 GbE card but the Unity 550F does not support a 25 GbE card
  C. The Unity 550F supports a 25 GbE card but the Unity XT 480 does not support a 25 GbE card
  D. 25 GbE is not supported on Unity or Unity XT systems
  B. The Unity XT 480 supports a 25 GbE card but the Unity 550F does not support a 25 GbE card

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  Explanation/Reference:

  The Unity XT 480 can be upgraded with the 25 GbE network cards, but the Unity 550F will not be able to support them and the customer will have to consider upgrading the Unity 550F to a newer model that supports 25 GbE.

• Question 146:

  Which Dell PowerStore supported media devices carry a FIPS Type D certification?

  A. NVMe SCM NVMe SSD, and SAS SSD
  B. SAS HDD. NVMe SSD NVMe SCM, and SAS SSD
  C. SAS SCM NVMe SSD and NVRAM
  D. SAS SSD NVMe SSD NVMe SCM, and NVRAM
  A. NVMe SCM NVMe SSD, and SAS SSD

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  Explanation/Reference:

  The Dell PowerStore supports a variety of media devices, including NVMe SCM, NVMe SSD, SAS SSD, SAS HDD, and NVRAM. Of these, NVMe SCM, NVMe SSD, and SAS SSD carry a FIPS Type D certification. This certification is a Federal Information Processing Standards (FIPS) certification that indicates that the device has passed a set of security standards established by the US government for use in sensitive, but unclassified data.

• Question 147:

  What are characteristics of D@RE on a Dell EMC Unity array?

  A. Impacts array only during implementation Has minimal impact on performance
  B. Does not impact array during implementation Has some impact on performance for a moment
  C. Impacts array for a moment after implementation Has no impact on performance
  D. Does not impact array during implementation Has minimal impact on performance
  D. Does not impact array during implementation Has minimal impact on performance

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  Explanation/Reference:

  controller-based D@RE has minimal performance impact for typical mixed workloads, and no impact to other Dell EMC Unity data services due to the level at which the encryption is performed, which is after all data services have been applied. https://www.delltechnologies.com/en-us/collaterals/unauth/white-papers/products/storage/h15090-dell-emc-unity-data-at-rest-encryption.pdf

• Question 148:

  In Dell EMC PowerStore storage, if the remote cluster has multiple appliances, then what automatically chooses the destination appliance for the resource?

  A. Performance Policy
  B. Resource Balancer
  C. Master appliance
  D. Source array
  B. Resource Balancer

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  Explanation/Reference:

  From the POWERSTORE ADMINISTRATION PARTICIPANT GUIDE, " Resource balancer also considers the the following when placing volumes:

  1.

  Whether the appliance is offline

  2.

  Appliance failure status

  3.

  Capacity utilization

• Question 149:

  What is a characteristic of tenant traffic on a Dell EMC Unity array?

  A. Separated by the associated VLANs at the Linux Kernel layer
  B. Separated by the associated subnet providing data separation with increasing security at the network layer
  C. Separated by one associated VLAN providing data separation with increasing security at the Linux Kernel layer
  D. Separated by the associated subnet at the Linux Kernel layer
  A. Separated by the associated VLANs at the Linux Kernel layer

• Question 150:

  Which Dell EMC tool uses an HTML5 interface and best practices to predict storage performance?

  A. Unity Sizer
  B. UniSphere
  C. Midrange Sizer
  D. MiTrend
  C. Midrange Sizer

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  Explanation/Reference:

  The Midrange Sizer includes a Help Me Choose a Product tool for choosing SC Series or Unity products. There are sizing tools for each. Within the Midrange Sizer, the SC Sizer is an HTML5-based tool for sizing SC systems.