EMC E20-393 Online Practice Questions and Exam Preparation

EMC E20-393 Online Questions & Answers

• Question 151:

  What is the purpose of a Proxy NAS Server?

  A. Increase performance for shared network connections that access NAS Servers
  B. Access Snapshot replicas on the destination side of a replicated file resource
  C. Access Snapshots for testing production NAS Servers
  D. Increase security of production NAS Servers
  B. Access Snapshot replicas on the destination side of a replicated file resource

  ---

  Reference https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h17122-dell_emc_unity-dr_access_and_testing.pdf (05)

• Question 152:

  How is the Dell EMC Unity Data Reduction Ratio calculated?

  A. Divide the predate-reduction size of all storage resources and their snapshots by the postdata-reduction size of all storage resources and their snapshots.
  B. Add up the efficiencies gained from thin provisioning, Deduplication, and Compression.
  C. Divide the predate-reduction size of all storage resources excluding their snapshots by the postdata-reduction size of all storage resources excluding their snapshots.
  D. Add up the efficiencies gained from thin provisioning, Snapshots, and Compression.
  D. Add up the efficiencies gained from thin provisioning, Snapshots, and Compression.

• Question 153:

  A system administrator has installed the Unity Connection Utility on a Microsoft Windows host. The Windows host is connected to the same physical subnet as a newly installed Unity storage system. When the utility is run, it does not discover any Unity storage systems.

  What should be checked on the host that may be preventing the utility from discovering any Unity storage systems?

  A. Java SE version
  B. Ethernet adapter flow control
  C. Network Access Filter Driver
  D. Host firewall services
  A. Java SE version

  ---

  Unity Connection is dependent on Java for some of the components to work.

  Incorrect Answers:

  B: Ethernet flow control is a mechanism for temporarily stopping the transmission of data on Ethernet family computer networks.

  D: As the traffic is within the same physical subnet a firewall would have no effect.

  References: https://www.cisco.com/c/en/us/support/docs/unified-communications/unity-connection/117497-probsol-unity-00.html

• Question 154:

  What determines the fault characteristics of a disk group?

  A. Drive speed
  B. Stripe width
  C. Drive type
  D. D@RE
  B. Stripe width

  ---

  Reference: https://www.dellemc.com/tr-tr/documentation/unity-family/unity-p-pool-config/06-unity-pool-br-understanding-raid.htm

• Question 155:

  Which Dell EMC Unity XT storage resource allows modification of its block size during creation?

  A. VVol file datastore
  B. VMFS datastore
  C. VVol block datastore
  D. NFS datastore
  C. VVol block datastore

• Question 156:

  A storage administrator needs to shrink their FAST Cache on a Dell EMC Unity XT storage system. The current configuration consists of six 400 GB SAS Flash 2 drives. What is the maximum number of drives that can be removed from FAST Cache through an online shrink operation?

  A. 2
  B. 4
  C. 5
  D. 6
  A. 2

• Question 157:

  A company has the following available drive types in their Dell EMC Unity 500 storage array:

  1.2 TB SAS 2 TB NL-SAS 100 GB SSD

  1.6 TB SSD

  3.8 TB SSD

  What combination of drives can the company use to create a storage pool?

  A. 2 TB NL-SAS and 100 GB SSD
  B. 1.6 TB SSD and 3.8 TB SSD
  C. 1.2 TB SAS and 1.6 TB SSD
  D. 2 TB NL-SAS and 3.8 TB SSD
  D. 2 TB NL-SAS and 3.8 TB SSD

• Question 158:

  An administrator wants to migrate an FLR-enabled file system with DHSM-enabled from a Dell EMC VNX array to a new Dell EMC Unity XT array. What method should they use?

  A. IP Replicator to replicate the file system
  B. Dell EMC Unity File Import feature
  C. IP Replicator V2 to replicate the file system
  D. CTA with Unity XT FLR-enabled FS as a tiering destination
  B. Dell EMC Unity File Import feature

  ---

  FLR is supported when using Native File Import to migrate fromVNX to Unity.

  If the source file system is FLR-enabled, the destination is provisioned with the same FLR settings

  No ability to reconfigure FLR settings during importRetention periods and lock status are migrated.

  If an FLR file system is being imported, DHSM must be configured on the VNX

  Reference: https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h17523-dell_emc_unity_file_level_retention_flr.pdf

• Question 159:

  What is a consideration for IP Packet Reflect running on a NAS server?

  A. Communications initiated by Unity do not require route table lookups.
  B. SP must be rebooted after IP Packet Reflect is disabled.
  C. SP Must be rebooted after IP Packet Reflect is enabled.
  D. Reply packets are sent via the same interface as the request packets.
  A. Communications initiated by Unity do not require route table lookups.

  ---

  References: https://www.emc.com/dam/uwaem/documentation/unity-p-configure-smb-file-sharing.pdf

  (53)

• Question 160:

  Which UnityVSA configuration can be performed using the Unisphere Initial Configuration wizard?

  A. Register host iSCSI initiators
  B. Configure Link Aggregation
  C. Register host HBA WWNs
  D. Add iSCSI network interfaces
  D. Add iSCSI network interfaces

  ---

  The Unisphere Initial Configuration wizard walks through a complete configuration of the UnityVSA, including changing passwords, licensing, network setup (DNS, NTP), creating pools, e-mail server, support credentials, your customer information, ESRS, iSCSI and NAS interfaces.

  References: http://blog.mdschneider.me/unityvsa-part-3/