EMC E20-385 Questions Answers

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EMC E20-385 Sample Questions

Question # 1

While implementing an EMC Data Domain system, the system is unable to join the Microsoft Active Directory domain. What is preventing the system from joining the domain? 

A. System time varies from AD server time by 310 seconds
B. Backup user does not have operator privileges
C. Unstable Fibre Channel connectivity to the AD server
D. Kerberos tickets are 210 seconds old and stale

Show Answer

Question # 2

A customer is integrating an EMC Data Domain into their Symantec NetBackup environment as an OST device. DD Boost has been configured on the Data Domain. After a few weeks of running backups, the customer notices the performance is lower than expected.On the Data Domain, which configuration option should be enabled to offload part of the deduplication process to the NetBackup media server to improve backup performance? 

A. DSP
B. NFS
C. WAN Optimization
D. MTree

Show Answer

Question # 3

Which command can be used on a Dell EMC Data Domain system to identify Active Directory joining issues?

A. user show list
B. cifs show active 
C. cifs troubleshooting list-groups
D. cifs troubleshooting list-users

Show Answer

Question # 4

You are an administrator for an EMC Data Domain system. Recent corporate policy changes mandate the following:1. Database files must be retained for a 7-year period.2. After the 7-year time period, the files must be permanently destroyed.3. Data exposure must be minimized when disk-based hardware is shipped.Which Data Domain software licenses need to be applied to the system?

A. Retention Lock and Encryption
B. Encryption and VTL with NDMP
C. DD Boost and Encryption
D. Retention Lock and Replication

Show Answer

Question # 5

A Dell EMC Domain Data system with two expansion shelves in a customer-provided rack. When cabling the controller to the shelves, where does the expansion port on the last shelf get connected?

A. Expansion port is left un-cabled
B. Host port on the controller
C. Host port on the other expansion shelf
D. Expansion port on the controller

Show Answer

Question # 6

You are installing an EMC Data Domain system with two expansion shelves in a customerprovided rack. When cabling the controller to the shelves, where does the host port on the last shelf in the chain get connected? 

A. Expansion port of the upstream shelf
B. Expansion port of the controller
C. Last port is left un-cabled
D. Host port of the controller

Show Answer

Question # 7

Which type of deduplication does Dell EMC Data Domain use to reduce the data footprint before data is stored to disk? 

A. Inline
B. Post-process
C. File-based
D. Fixed-segment

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Question # 8

A customer notices an improved deduplication rate and write time into their EMC Data Domain system while multiplexing is turned off. What is the reason? 

A. Multiplexed streams negatively impact the deduplication process
B. Data rates increase on the backup server with multiplexing
C. Data flow is reduced with multiplexing
D. Multiplexed streams increase backup server disk usage

Show Answer

Question # 9

A customer's EMC Data Domain system reports a global compression ratio of 7.8x. This does not meet the customer’s expectations.What can be done to increase the data reduction ratio?  

A. Extend the data retention period
B. Turn off local compression on the system
C. Compress the data before sending it to the system
D. Reduce the data retention period

Show Answer

Question # 10

In an EMC Data Domain environment, when are cage nuts used?

A. Square hole rack fastening
B. Rack-to-rack fastening
C. Round hole rack fastening
D. Tapped hole rack fastening

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Question # 11

A delivery specialist wants to integrate a Dell EMC Data Domain system into an existing backup environment using NAS. What are the supported protocols?

A. CIFS and NFS only
B. CIFS, NFS, DD Boost, and VTL
C. CIFS, NFS, and DD Boost only
D. CIFS, NFS, and VTL only

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Question # 12

You are responsible for capacity planning in an EMC Data Domain environment. While monitoring space usage over a series of weeks, you notice a sudden increase in space consumption. The new rate of consumption will require additional capacity.What is the most likely cause? 

A. A new project on the client systems involve high volume of pre-compressed file types
B. Retention period was decreased from 16 weeks to 12 weeks
C. Rate of full backups was changed from twice a week to once a week
D. Rate of change in incoming data is resulting in fewer incremental backups

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Question # 13

In a DD Boost environment, which storage is supported when using a Dell EMC ProtectPoint solution?

A. VMAX
B. VNX
C. Unity
D. VMAX3

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Question # 14

An EMC Data Domain customer wants VTL replication functionality. Which licensing option is required?

A. A single VTL license applied to the source Data Domain.A Replicator license applied to both the source and destination Data Domains.
B. A VTL license applied to both the source and destination Data Domains.
C. A single VTL license applied to the destination Data Domain.A Replicator license applied to both the source and destination Data Domains.
D. A Replicator license applied only to the source Data Domain.

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Question # 15

A customer has EMC Data Domain system installed in their data center for two weeks. The environment consists of the following.1. Data Domain is configured as the primary backup device being shared by Avamar, NetBackup, Oracle RMAN, and SQL Server backup clients  2. Avamar and NetBackup are using DD Boost to backup a total of 500 clients (250 each)3. Avamar is configured to allow a maximum of 100 concurrent backups4. NetBackup is configured to allow 150 concurrent backups writing to the Data Domain with the backup window starting at 8 P.M. nightlyA total of 50 production Oracle servers are using NFS and 50 production SQL servers are using CIFS, each performing full backups nightly between 11 P.M. and 5 A.M. The archive and transaction logs backs up every 15 minutes. The retention for all client backups is 30 days.The backup administrators notice that between 8 P.M. and 11 P.M. every night, the Data Domain CPU is at 100% utilization. What is a potential reason for the high CPU utilization?  

A. Maximum streams threshold has been exceeded on the Data Domain
B. Snapshots are scheduled during the backup window
C. Network throughput is being over utilized
D. Data Domain default cleaning schedule is running during the backup window

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EMC E20-385 Reviews