EMC EMC Certifications E20-393 Questions & Answers

• Question 251:

  Which feature provides the ability to provision block and file storage for Microsoft Windows or Microsoft SharePoint sites?

  A. EMS Storage Integrator for Windows

  B. Array Offloaded Data Transfer

  C. vStorage APIs for Array Integration

  D. EMC Virtual Storage Integrator

  Correct Answer: A

• Question 252:

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

  A. Array Name

  B. System's Serial ID

  C. DNS Host Name

  D. System's UUID

  Correct Answer: B

  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

• Question 253:

  An administrator's Unity system is configured with both a Fibre Channel CNA and a Fibre Channel I/O module. Which Fibre Channel port on each SP must be used for native synchronous replication?

  A. CNA FC port 5

  B. I/O module FC port 2

  C. CNA FC port 4

  D. I/O module FC port 5

  Correct Answer: C

  Only one FC port can be configured and used for synchronous replication. Once an FC port is assigned, it will continue to act as the synchronous replication port and can never be changed. To determine the FC port used for synchronous replication, in the CLI console, run the command /remote/sys show -detail. Port information, similar to the following example, will appear in the output: Synchronous FC ports = spb_fc4, spa_fc4 References: https://www.dellemc.com/en-us/documentation/unity-family/unity-p-replication-config/03-unity-rep-br-considerations-syncrep.htm

• Question 254:

  What is the maximum number of LUN snapshots that are supported by Unity?

  A. 16

  B. 96

  C. 256

  D. 512

  Correct Answer: C

  Note: Logical Unit Number (LUN) ?A block-level storage device that can be accessed using a protocol such as iSCSI.

• Question 255:

  At which stage in the Unity power up sequence would the Storage Processor enter Service mode upon detecting an error?

  A. After the CMI is started

  B. Bootflash

  C. POST

  D. BIOS

  Correct Answer: C

  Note: Boot counters are a troubleshooting mechanism that is designed into the Unity architecture to help pinpoint the specific cause of software or hardware events during the boot sequence. If the Unity system detects a problem with software or hardware components, its corresponding Boot Counter is incremented. If a counter reaches a predefined threshold, the SP boots into Service Mode during its next boot cycle.

  References: https://www.emc.com/collateral/TechnicalDocument/docu69328.pdf (page 12)

• Question 256:

  What describes multiple LUN snapshots?

  A. Captures multiple point-in-time data states. Snapshot data state is marked "unmodified" from its source when attached. Snapshot tree supports multiple simultaneous attaches.

  B. Captures multiple point-in-time data states. Snapshot data state is marked "unmodified" from its source when attached. Snapshot tree supports only one attach at a time.

  C. Captures multiple point-in-time data states. Snapshot data state is marked "modified" from its source when attached. Snapshot tree supports multiple simultaneous attaches.

  D. Captures multiple point-in-time data states. Snapshot data state is marked "modified" from its source when attached. Snapshot tree supports only one attach at a time.

  Correct Answer: D

  Only a single snapshot per LUN can be attached at any given time, and must be detached prior to attaching another snapshot of the same LUN.

  

• Question 257:

  Which task must be performed on the storage system in order to access a file system read/write snapshot?

  A. Configure Host Access to the LUN snapshots

  B. Configure the NFS/SMB share to the file system snapshot

  C. Connect to the NFS/SMB share of the snapshot

  D. Perform the snapshot "Attach to Host" operation

  Correct Answer: B

  Read-write snapshots can be made available to hosts as separate shares.

  The Shared property is applicable to file snapshots only, and indicates whether the snapshot is currently available to clients as a share. The default value is No, and changes to Yes when the read-write file system snapshot is used to create

  shares. For read-only file system snapshots, this property is always set to No.

  Share-A named, mountable instance of file-level storage, accessible through a file system or VMware NFS Datastore. Each share is accessible through the protocol (NFS or SMB) defined for the file system where it resides.

• Question 258:

  Which severity level alerts for a fault condition that has occurred, has minor impact on the system, and does not need to be fixed immediately?

  A. Critical

  B. Notice

  C. Error

  D. Warning

  Correct Answer: D

  Event Severity levels are: critical, error, warning, info.

• Question 259:

  A storage administrator wants to configure a Unity system to log system events to a remote log server. In order to allow access to the log server, which port should the administrator ensure is not blocked by the firewall?

  A. 514

  B. 714

  C. 1000

  D. 5179

  Correct Answer: A

  The storage system supports logging user/audit messages to a remote host. By default, the storage system transfers log information on port 514 using UDP.

  References: https://www.emc.com/collateral/TechnicalDocument/docu69321.pdf (Page 31)

• Question 260:

  A Unity system LUN has a daily snapshot schedule with a Retention Policy of seven days. A hardware failure results in a double fault of the LUN.

  Which snapshot behavior will be experienced?

  A. All of the snapshots will be unavailable to restore data from

  B. Data restoration is available from the oldest snapshot, all others are unavailable

  C. All of the snapshots will be available to restore data from

  D. Data restoration is available from the newest snapshot, all others are unavailable

  Correct Answer: D

  The oldest snapshots residing on that pool with retention policy set to pool automatic deletion begin being deleted.