EMC EMC Certifications E20-385 Questions & Answers

• Question 151:

  Which TCP port is used to send SNMP traps from an EMC Data Domain system?

  A. 25

  B. 143

  C. 162

  D. 993

  Correct Answer: C

• Question 152:

  In a EMC Data Domain system, which user role allows creation of snapshots as well as import and export of tapes to a VTL library?

  A. Backup-operator

  B. User

  C. Security

  D. Data-access

  Correct Answer: A

• Question 153:

  Which CLI command will display information about disks in EMC Data Domain enclosures?

  A. disk show state

  B. enclosure show topology

  C. enclosure show summary

  D. disk status

  Correct Answer: A

• Question 154:

  A customer is writing critical data to the pre-configured, default NFS export on an EMC Data Domain system for replication to a remote site.

  Which directory on the local Data Domain system should be reviewed to verify the data is successfully being written?

  A. /data/col1/backup

  B. /ddvar

  C. /data/col1

  D. /data/col1/repl

  Correct Answer: A

• Question 155:

  An EMC Data Domain customer wants to add a static route using the CLI. Which command is used?

  A. route add

  B. net config

  C. route config

  D. config route

  Correct Answer: A

• Question 156:

  When using VTL on an EMC Data Domain system, why should persistent binding be enabled on the host?

  A. Prevents interruption of backup operations after a system reboot

  B. Enables LUN Masking, assisting in performance

  C. Provides access to devices during an outage

  D. Provides high availability

  Correct Answer: A

• Question 157:

  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

  Correct Answer: A

• Question 158:

  NetBackup has been configured to use an EMC Data Domain appliance as a VTL for the primary target storage unit.

  Which multiplexing setting should be configured within the NetBackup storage unit to achieve optimal deduplication performance on the Data Domain?

  A. Disabled

  B. Unlimited

  C. 2

  D. 4

  Correct Answer: A

• Question 159:

  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 backups

  4.

  NetBackup is configured to allow 150 concurrent backups writing to the Data Domain with the backup window starting at 8 P.M. nightly

  A 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

  Correct Answer: A

• Question 160:

  When implementing NFS with an EMC Data Domain system, why should hard mounts be used?

  A. Ensure availability of the server after reboots or outages

  B. Enable backups of individual mounts

  C. Ensure availability of mounts through other protocols

  D. Prevent non-administrators from accessing the mounts

  Correct Answer: A