E20-385 Online Practice Questions and Answers

An organization currently writes backups to an EMC Data Domain system and then creates encrypted copies of their backups on tapes. These tapes are then shipped to a third-party offsite vault.

They are now planning to deploy a second Data Domain system in a hosted disaster recovery site as a replication target. This will replace the use of the offsite tapes. The two sites are connected through an encrypted WAN link.

Where should encryption be applied on the Data Domain systems to ensure a similar level of data security as their current process?

A. Enable Encryption of Data at Rest at the disaster recovery site

B. Use encryption of data in flight to the hosted disaster recovery site

C. Enable Encryption of Data at Rest at the source site

D. WAN link between the sites is already encrypted

An EMC NetWorker 8.0 SP1 administrator is tasked with setting up a VTL on their EMC Data Domain system. Which values should be used for the "Target sessions" and "Max sessions" parameters?

A. Target Sessions = 0 Max Sessions = 4

B. Target Sessions = 1 Max Sessions = 1

C. Target Sessions = 1 Max Sessions = 6

D. Target Sessions = 2 Max Sessions = 1

A customer is deploying an EMC Data Domain system for virtual tape library emulation and uses barcode labeling of AAA000LB.

How many tapes can be created with this specification?

A. 100

B. 999

C. 1,000

D. 9,999

An EMC Data Domain system has been installed at a customer's site for several months and has reached steady state.

At which threshold percent does capacity reach the point where action should be taken to make more free space available?

A. 75

B. 85

C. 90

D. 95

On an EMC Data Domain system, what is the role of file system cleaning?

A. Remove unreferenced segments from physical storage

B. Delete data from VTL cartridges that have been marked as expired

C. Remove all traces of a file to resolve classified message incidents

D. Eliminate older snapshots if the file system exceeds 90% utilization

What is an advantage of inline deduplication over post-process deduplication?

A. Reduced time to disaster recovery readiness when replicating

B. Disk cache tier ensures consistent write speed

C. Increased deduplication from the use of variable segment sizes D. Write speed is increased by the number of disk spindles

A customer is deploying EMC Data Domain systems in multiple sites to replace their existing tape backup infrastructure.

Which feature will allow the customer to copy their data between the systems at multiple sites?

A. Replication

B. Snapshot

C. Fastcopy

D. Retention Lock

An organization currently writes backups to an EMC Data Domain system and then creates encrypted copies of their backups on tapes. These tapes are then shipped to a third-party offsite vault. They are now planning to deploy a second Data Domain system to a secure data center at their corporate headquarters as a replication target to replace the use of the offsite tapes. The two sites are connected through the Internet.

Where should encryption be applied on the Data Domain systems to ensure a similar level of data security as achieved by their current process?

A. Encrypt the replication context

B. Encrypt the data at rest

C. Encrypt the data at rest and the replication context

D. Encryption is not required

How many units of rack space are required to accommodate an EMC Data Domain DD670 with two ES20 expansion shelves?

A. 6

B. 8

C. 10

D. 12

A company does not allow systems to send email to external accounts.

What effect would this have on EMC Data Domain support?

A. Autosupports and hardware failures cannot be tracked

B. System can be configured to use Connect EMC

C. System can send alerts, but autosupports will need to be disabled

D. Third-party email support can be configured

What are two link aggregation methods supported on an EMC Data Domain system?

A. Balanced-rr and Round Robin

B. Balanced-xor and Failover

C. Balanced-xor and Round Robin

D. Balanced-rr and Failover

Which EMC Data Domain feature requires a software license?

A. Link Aggregation

B. Virtual Tape Library

C. VLAN Tagging

D. Snapshots

What is a characteristic of EMC Data Domain variable segment size deduplication?

A. Segmentation is based on bytes not files

B. Entire data stream moves to make room for the new segment

C. A file is stored and duplicate versions are pointed to the original

D. Variable segment size is not supported on a Data Domain system

What is a benefit of snapshots on an EMC Data Domain system?

A. Requires no disk space to store

B. Provides data restoration from a specific point in time for deleted data

C. Included with the replication license

D. Provides NDMP backups to a remote site

On 8/15, what causes the drop in disk usage on the EMC Data Domain system as illustrated in the exhibit?

A. Data was deleted on the system and file system cleaning completed

B. Data was deleted on the system and no longer used

C. Better deduplication ratios and less storage was needed

D. More storage was added and allowed for higher compression