E20-385 Online Practice Questions and Answers

Which method of deduplication yields better deduplication results for multiple data types?

A. Variable segment size due to its ability to split the data stream into segments

B. Variable segment size due to its ability to add data to a variable segment and move the data stream

C. Fixed segment-based due to its ability to allow sub-file chunking of data

D. Fixed segment size due to its ability to add data to a fixed segment and move the data stream

What is the current NAA type in the WWN format used within EMC Data Domain OS 5.4?

A. 1

B. 2

C. 5

D. 6

A customer environment has an EMC Data Domain system with Data Domain Extended Retention enabled. The environment has three sealed extended retention units. The customer notices a slight delay when accessing the oldest data sets.

What is a potential reason for this issue?

A. Retention units may be swapped out of memory

B. Retention units were marked "Ready Sealed"

C. Retention units should be unsealed

D. Retention unit data is encrypted

What is the maximum number of snapshots supported on an EMC Data Domain system per MTree?

A. 100

B. 255

C. 750

D. 1024

An EMC Data Domain customer can view data on a destination system in a collection replication context. They are attempting to write data using CIFS; however, they are unable to perform writes. What is causing this issue?

A. Data is read-only

B. Write permission needs to be enabled on the share

C. User needs write permissions

D. Share needs to be configured

When monitoring EMC Data Domain systems, an administrator sees the System Manager File System Summary showing a compression factor of 20x.

How is the equivalent value shown in the "Reduction%" column?

A. 80

B. 90

C. 95

D. 96

When logging into an EMC Data Domain system during an initial installation, which connection type must be used?

A. Serial Console

B. FTP

C. Telnet

D. IPMI

Refer to the Exhibit.

On the EMC Data Domain system, what is the approximate amount of data sent to the system on November 11th?

A. 70 GiB

B. 80 GiB

C. 200 GiB

D. 220 GiB

A customer is currently using an EMC Data Domain system with NFS configured over 10 Gb Ethernet. They have a requirement to archive to tape.

Which process is used to transport data to tape?

A. Use the VTL interface to eject tapes to physical tapes

B. Use the tape export function on the Data Domain system

C. Use the backup software to move backup data to tape

D. Use the Enterprise Manager on the Data Domain system

A customer has two EMC Data Domain systems deployed with a collection replication configuration. Based on best practices, what should be configured if the customer has less than 6 Mb/s throughput between the installation sites?

A. Low bandwidth optimization

B. Gz compression

C. Initial replication seeding

D. Bi-directional replication

What does the EMC Data Domain system command # net failover add veth0 interface eth4a eth4b primary eth4a accomplish?

A. Creates an IP alias for the Ethernet ports

B. Creates a virtual interface for the Ethernet ports

C. Causes the NIC to failover to eth4a

D. Performs a failover to the replication target

The exhibit illustrates an EMC Data Domain environment with DD Boost and DSP.

Which process is represented by Step 3?

A. Filter

B. Fingerprint

C. Segment

D. Compress

A customer is looking for the following requirements to replicate data:

Entire /backup directory replicated

All user accounts and password are replicated

Full system data replication mirror

Which type of replication meets the customer's requirements?

A. Collection

B. Directory

C. Pool

D. Snapshot

When creating virtual tapes on an EMC Data Domain system by specifying "L2" in the suffix of the virtual media barcode, which tape size will be created?

A. 10 GB

B. 50 GB

C. 100 GB

D. 200 GB

A customer is running NFS backups with eight Symantec NetBackup Media Servers. The EMC Data Domain system is receiving data at 700 MB/s. What is a possible cause if the system is also writing to disk at 700 MB/s?

A. Network bottlenecks

B. Encrypted data streams

C. Too many media servers

D. Not enough connections