EMC E20-393試験情報と無料練習テスト問題で合格せよ [Q24-Q44]

4.7/5 - (3 votes)

EMC E20-393試験情報と無料練習テスト問題で合格せよ

2022年最新のの問題E20-393問題集で更新されたEMC試験問題集を試そう

質問 24
While examining the health status of a Dell EMC Unity array, the administrator notices the internal SSD is in a faulted state.
Which condition caused this fault?

BBU is not charged enough to keep the SSD powered on

There are only 5% of the spare blocks remaining on the SSD

SP Cache had too many dirty pages to copy to the SSD

There are no spare blocks remaining on the SSD

質問 25
Which disk format is recommended for Dell EMC Unity’s OVA?

Thick Provision Lazy Zeroed

raw

Thick Provision Eager Zeroed

Thin Provision

Explanation/Reference: https://www.dellemc.com/en-us/documentation/unity-family/unity-p-vsa-install/02-vvx-c-ch- deploying-single-sp-unityvsa.htm

質問 26
Which UnityVSA user interface allows advanced users to create scripts for automating routine tasks?

Unisphere Central

UEMCLI

SP Console

Unisphere GUI

Explanation
Unisphere Command Line Interface (UEMCLI) is an interface that allows a user to perform tasks on the
storage system by typing commands instead of using the graphical user interface.
Note: Representational State Transfer (REST) is a management API that allows clients to interact with
UnityVSA using standard HTTP mechanisms and semantics. Operations that can be performed in Unisphere
or UEMCLI can also be performed using REST API.
Application developers can access REST API with any programming or scripting language capable of making
HTTP requests, without requiring a separate client.

質問 27
For high availability within iSCSI, connections should be attached using what?

Different subnets

Flow control

Twinax cables

Jumbo frames

質問 28
What functionality is provided by the Unity UFS64 Enterprise File System architecture?

File systems scaled up to 16 TB.

QoS controlled by density-based policies.

Up to 64,000 sub-directories per directory

Space reclamation of unused blocks.

Explanation
References:
http://www.emc-announces.com/collateral/white-papers/h13770-emc-vnxe3200-ufs64-wp.pdf

質問 29
What is the first step to configure asynchronous replication for a storage resource?

Set up management channel

Configure replication session

Verify replication connection

Create replication interfaces

Explanation/Reference:

質問 30
A storage administrator is required to test a new version of an application loaded on a secondary host. The administrator must use existing data contained on a LUN provisioned from Unity to a primary host.
Which solution will meet the requirement and provide space efficiency?

Create a snapshot of the LUN
Configure LUN access for the secondary host
Attach the snapshot to the secondary host

Create a snapshot of the LUN
Configure snapshot access to the LUN for the secondary host
Attach the snapshot to the secondary host

Create a Synchronous Replication session for the LUN
Configure access to the replica LUN for the secondary host
Attach the secondary host

Create an Asynchronous Replication on session for the LUN
Configure access to the replica LUN for the secondary host
Attach the secondary host

Explanation
Explanation/Reference:
Attaching a snapshot is only applicable for block snapshots, and makes the snapshot available for host IO. A host must have Snapshot access or LUN and Snapshot access configured in order to access the snapshot.
When a snapshot is attached, Unisphere provides the option to create a copy of the snapshot in case the administrator wants to preserve the current snapshot view for future use.

質問 31
Which information must be retrieved and used to select the unconfigured UnityVSA system when running the Auto-discover option of the Connection Utility?

Array Name

System’s Serial ID

DNS Host Name

System’s UUID

Note: The Connection Utility can be use the Auto Discover option to discover the system and configure the system name, IPv4 management settings, and/or IPv6 management settings.
References: https://www.emc.com/collateral/TechnicalDocument/docu69316.pdf

質問 32
Through which protocols are backend storage provisioned to the ESXi host when deploying a UnityVSA system?

iSCSI, SMB, and NFS

iSCSI and NFS only

FC, iSCSI, and NFS

FC and iSCSI only

Explanation
UnityVSA supports SMB, NFS, and iSCSI.
References: https://www.emc.com/collateral/TechnicalDocument/docu69362.pdf (page 4)

質問 33
On which systems is Quality of Service available?

Physical Unity systems only

UnityVSA systems only

Physical Unity and UnityVSA systems

All Flash Unity systems only

UnitVSA features Host I/O limits, also known as Quality of service.
The EMC [Physical] Unity array comes with a pack of new hardware and software features focusing on the true unification:
References:
https://www.presidio.com/blog/1554/technical-summary-emc-unification-with-unity

質問 34
Which IP connection characteristic is unique to file-based storage access, as opposed to iSCSI?

Link Aggregation

Bandwidth throttle

VLAN tagging

Mirrored writes

質問 35
You have recently deployed a UnityVSA system. In addition to the three virtual disks on which the system is deployed, what is the minimum number of virtual disks required to create a storage pool on the system?

References: https://www.emc.com/collateral/TechnicalDocument/docu69316.pdf (p.11)

質問 36
What is the minimum and maximum recovery point objectives (RPO) configurable when using Unity native asynchronous replication?

Minimum= 5 minutesMaximum= 24 hours

Minimum= 5 minutesMaximum= 48 hours

Minimum= 1 minuteMaximum= 24 hours

Minimum= 1 minuteMaximum= 48 hours

Explanation
Recovery Point Objective (RPO) is an industry accepted term that indicates the acceptable amount of data, measured in units of time, that may be lost in a failure. When you set up an asynchronous replication session, you can configure automatic synchronization based on the RPO. You can specify an RPO from a minimum of
5 minutes up to a maximum of 1440 minutes (24 hours).
References: https://www.emc.com/dam/uwaem/documentation/unity-p-replication-config.pdf (page 7)

質問 37
Refer to the exhibit.

What is a possible reason for the health score of 70 that is associated with the Test_Dev storage pool?

Data protection for this storage pool is not configured

Storage pool is full and oversubscribed, and needs attention

Storage pool performance is impacted because of prolonged disk queue length

Storage pool has a component failure and needs attention

質問 38
A Unity 400 system has Data at Rest Encryption licensed and enabled. Which operation(s) must be performed from the Unisphere Settings window to ensure the system is still operational after SP replacements?

Download Audit Log

Download Checksum

Backup Keystore File

Download Audit Log and Checksum

Explanation
The keystore is tied to the storage processors, so care must be taken when performing service operations in order to preserve the encryption keys. In the event that the chassis and both storage processors need to be replaced, both storage processors should not be replaced at the same time. Instead, the chassis replacement should be followed while retaining one SP until the array is back online before replacing the second SP. In the case that storage processors have already been replaced at the same time and the keystore was lost, the keystore may be restored from an external backup.

質問 39
A user is setting up Dell EMC Unity network ports for connectivity between the NAS clients and NAS Servers. In Unisphere, what can a user modify under the Access section of the Settings configuration window?

Speed and MTU only

Speed, MTU, and port aggregation

Speed, MTU, and name of port

Speed and port aggregation only

質問 40
A system administrator is configuring asynchronous remote replication for an existing NAS server and its’
file systems on a Unity system. What should the administrator create to ensure all data is replicated for the
NAS server and the file system?

Replication sessions on each file system only

Replication sessions for each file system first and then the NAS server

A replication session on the NAS server and then manually create replication sessions on each file
system

A replication session for only the NAS server

Explanation/Reference:
Before File Systems or VMware NFS Datastores can be replicated, the NAS Server must be replicated.

質問 41
How can data at rest Encryption be activated on Dell EMC Unity?

Enable Data at rest Encryption at any time using Unisphere settings > manage Encryption

Enable data at rest Encryption, but only during initial configuration, using Unisphere settings > Manage Encryption

Install data at rest Encryption license at any time using Unisphere Settings > Install License

Install data at rest Encryption, but only during initial configuration

Explanation/Reference: https://www.emc.com/collateral/white-papers/h15090-dell-emc-unity-data-at-rest-encryption.pdf

質問 42
Dell EMC Unity systems collect several metrics at various time intervals and use ESRS to send the information to CloudIQ.
What are those metrics and their time intervals?

Alerts = 5 min
Performance = 5 min
Capacity = 1 hr
Configuration = 1 hr

Alerts = 2 min
Performance = 1 hr
Capacity = 1 hour
Configuration = 1 hr

Alerts = 5 min
Performance = 1 hr
Capacity = 2 hour
Configuration = 1 hr

Alerts = 2 min
Performance = 30 min
Capacity = 1 hr
Configuration = 1 hr

質問 43
What is an advantage of using the InitCLI tool to assign an IP address to a Unity storage system?

Allows additional services beyond what the Connection Utility offers.

Supports an IPv6 configuration.

Supports the configuration of DHCP addresses.

Does not require the host to have Java installed.

Explanation
References: https://www.emc.com/collateral/white-papers/h15085-dell-emc-unity-unisphere-overview.pdf
(p.7)

質問 44
Which Directory Services can be configured in the Unisphere Settings window?

LDAP

NIS

NDS

Active Directory

Loading …

EMC E20-393 認定試験の出題範囲：

トピック	出題範囲
トピック 1	ホストI Oパフォーマンス機能の性質と使用法を説明する DellEMC UnityXTおよびUnityVSAシステム管理
トピック 2	SMBおよびNFSファイルストレージリソースへのNASクライアントアクセスを構成する方法を説明する DellEMC Unity XTハードウェアコンポーネントを特定する：DPE、SPE、DAE、拡張モジュール
トピック 3	ブロック、ファイル、およびVMwareデータストアストレージをプロビジョニングする方法を説明する動的プールの拡張、ドライブサイズの混合に関する考慮事項、および再構築プロセスを説明する
トピック 4	ストレージリソースでスナップショット操作がどのように実行されるかを説明する DellEMCUnityVSAソフトウェア定義のストレージソリューションを説明する
トピック 5	システム管理 DellEMC UnityXTおよびUnityVSAストレージのプロビジョニングとアクセスのためにサポートと基本的なシステム設定がどのように構成されているかを説明する
トピック 6	VMwareデータストアストレージリソースにアクセスするようにVMwareESXiホストを構成する方法を説明する DellEMC UnityXTストレージシステムをインストールして初期化する方法を説明する