DELL EMC D-MSS-DS-23 問題練習

Question No : 1
DRAG DROP
In vCenter, what is the correct order of steps to create a VM in a storage container provisioned on a Dell EMC Power Store system?

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正解:


Explanation:
STEP1: VASA
STEP2: POWERSTORE CONNECTIVITY
STEP3: Create vvol datastore
STEP4: create vm storage policies
STEP5: Provision VMs based on vvol datastore

Question No : 2
When enabling a multi-protocol NAS implementation on a Dell EMC PowerStore array, what is required for an end-to-end mapping of a Windows system?

• A.Group ID (GID)
• B.User ID (UID)
• C.Active Directory (AD)
• D.Security ID (SID)

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正解:
Explanation:
https://www.delltechnologies.com/en-us/collaterals/unauth/white-papers/products/storage/h18155-dell-emc-powerstore-file-capabilities.pdf page 22, multiprotocol, windows section, identifiers

Question No : 3
What is a consequence of using an 800 GB drive and five 400 GB drives in a Dell EMC Unity XT dynamic pool?

• A.Extents 9 C 14 are used to create a RAID Group
• B.Unisphere short strokes the 800 GB drive to 8 extents
• C.Extents 9 C 14 are marked unavailable until more 800 GB drives are added
• D.Extents 9 C 14 are marked unavailable and can never be recovered

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正解:
Explanation:
The entire capacity of a particular drive size is only available when the drive count within the drive partnership group for the drive in question matches or exceeds the stripe width plus one drive. It is not recommended to mix different size drives of the same type for this reason, unless an adequate number of drives are available to meet or exceed the stripe width plus one drive requirement
h16289-dell_emc_unity-dynamic_pools.pdf - Page 18-19

Question No : 4
What is the Dell EMC best practice for sizing and designing a Dell EMC SC Series solution?

• A.Front-end ports required for performance should always meet capacity needs
• B.Drive capacity should meet performance needs
• C.Size for performance first and capacity second
• D.Size for capacity; Data Progression should always meet performance needs

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正解:

Question No : 5
You are designing a Dell EMC Unity solution. You need to predict its expected performance based on workload, number o and type of drives, and RAID protection.
Which design path on the Midrange Sizer should you take?

• A.System Designer path
• B.Application Oriented path
• C.Quick Configuration path
• D.Performance Data Input path

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正解:

Question No : 6
What final operation should be performed after adding a single drive to a Dell Powerstore array?

• A.Add it to an existing DRS
• B.Format the drive
• C.Back up the Keystore
• D.Verify drive operation

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正解:
Explanation:
This ensures that the drive is properly connected and communicating with the array, and that it is functioning as expected. Additionally, the new drive should be added to an existing DRS (Drive Replacement Set) and if necessary, the keystore should be backed up and the drive should be formatted.

Question No : 7
A customer with a Dell Unity 550F has recently upgraded to the Unity OE 5 0 release They want to use the Advanced Deduplication feature to reduce the used data capacity in a dynamic storage pool LUNs in the pool have the feature enabled but the pool used capacity has not reduced
What is one way to fix this problem?

• A.Sequentially reboot both Storage Processors
• B.Free up at least 50% capacity to the pool
• C.Trespass the LUNs to the peer Storage Processor
• D.Move the LUNs to a different pool

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正解:

Question No : 8
Which encryption algorithm is used for SMB shares on Dell EMC Unity?

• A.AES-CCM
• B.AES128-GCM
• C.AES-CMAC
• D.HMAC-SHA256

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正解:
Explanation:
This provides improved security and encryption traffic performance for SMB3 by changing the encryption algorithm from AES-CCM-128 to AESGCM-128.
Page 40: https://www.delltechnologies.com/en-zm/collaterals/unauth/white-papers/products/storage/h15572-dell-emc-unity-nas-capabilities.pdf

Question No : 9
A customer sales order lists .2 Devices as a line item. The order is for a Dell EMC Unity 380F array.
How many .2 Devices should appear in the order?

• A.2
• B.4
• C.6
• D.8

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正解:

Question No : 10
What is a benefit of cross-platform replication between Dell EMC SC Series and Dell PS Series arrays?

• A.Leverages existing interfaces
• B.Enables replication of volume collections
• C.Supports cascade mode for the PS Group
• D.Provides active snapshot replication

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正解:

Question No : 11
What initiates an automatic NAS server failover to the peer SP?

• A.Network link failure
• B.Resource balancing algorithm
• C.Assisted internal migration
• D.SP hardware fault

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正解:
Explanation:
An SP hardware fault initiates an automatic NAS server failover to the peer SP in Dell Unity systems. This ensures that the NAS services remain available in case of hardware failure in one of the Storage Processors (SPs). The failover process is automatic and transparent to the hosts accessing the data, and it helps to maintain the high availability of the NAS services.

Question No : 12
You are upgrading a Dell EMC Unity array to a Dell EMC PowerStore 1000 T array. The customer asks what they need to do so they can map PowerStore snapshots from the new PowerStore array to a host.
What should be your response?

• A.Create a volume group of the snapshot.
• B.Create a read/write snapshot of the snapshot
• C.Create a copy of the snapshot
• D.Create a thin clone of the snapshot

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正解:
Explanation:
"Volume and Volume Group Snapshots: Snapshots cannot be mapped to a host. To view the contents of a snapshot, you must first clone the snapshot then map the clone to a host."

Question No : 13
What are the inputs and outputs of the Unity Designer tool?

• A.Inputs: Sales order, Excel configuration guide report, Detailed design Outputs: Sales order, Sizing XML file, System configuration PDF file
• B.Inputs: Sales order, Detailed design, Excel configuration guide report Outputs: Sizing XML file, System configuration PDF file
• C.Inputs: Sales order, Sizing XML file, System requirements Excel file Outputs: Detailed design, Excel configuration guide report, System configuration PDF file
• D.Inputs: Sales order, Sizing XML file, System configuration PDF file Outputs: Detailed design, Excel configuration guide report

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正解:

Question No : 14
A technical architect is designing a Dell Unity XT 480 using the System Designer option of Sizer.
What is the recommended minimum amount of Flash that they should specify?

• A.15%
• B.7%
• C.5%
• D.10%

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正解:
Explanation:
7% is the recommended minimum amount of Flash that a technical architect should specify when designing a Dell Unity XT 480 using the System Designer option of Sizer. This is because, Unity XT storage systems require a certain amount of flash storage to handle system-wide functions such as metadata, snapshots and other storage services.

Question No : 15
How does configuring snapshot retention differ when manually creating snapshots in the Dell EMC Unity GUI, compared to using the Unity CLI?

• A.Manually created snapshots do not have the ‘No automatic deletion’ option. Snapshots created with Unity CLI have the ‘No automatic deletion’ option.
• B.Manually created snapshots have the ‘No automatic deletion’ option. Snapshots created with Unity CLI do not have the ‘No automatic deletion’ option.
• C.The retention period for manually created snapshots is days. The retention period for snapshots created with Unity CLI can be hours or days.
• D.The retention period for manually created snapshots can be hours or days. The retention period for snapshots created with Unity CLI is days.

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正解:
Explanation:
Reference: https://docplayer.net/77745477-Dell-emc-unity-snapshots-and-thin-clones.html