e Number: Passing Score: 800 Time Limit: 120 min File Version: 1.0

Transcription

1 e Number: Passing Score: 800 Time Limit: 120 min File Version: EMC E EMC Data Domain Deduplication, Backup and Recovery Exam Version: 5.1

2 Exam A QUESTION 1 1 A customer has a Data Domain system with one expansion shelf using RAID 6 disk protection. An active data disk has failed while another data disk is going through the reconstruction process. All remaining disks are active with no more spare disks. How many additional disk(s) can fail before data becomes unrecoverable? A. 0 B. 1 C. 2 D. 3 Correct Answer: B /Reference: QUESTION 2 2 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 /Reference: QUESTION 3 3 What is a component of Data Domain Data Invulnerability Architecture that protects against data loss? A. Fault avoidance B. Encryption C. System sanitization D. Snapshots /Reference: 2

3 QUESTION 4 4 What is a component of Data Domain Data Invulnerability Architecture that protects against data loss? A. Encryption B. System sanitization C. File system recovery D. Snapshots Correct Answer: C /Reference: QUESTION 5 5 Which EMC Data Domain technology allows inline deduplication to occur fast and efficiently? A. SISL scaling architecture B. Data Domain Data Invulnerability Architecture C. DD Boost D. SATA /Reference: QUESTION 6 6 Which variable length segment size range is used for EMC Data Domain deduplication? A. 2-8 KB B KB C KB D KB Correct Answer: B /Reference:

4 3 QUESTION 7 7 In an EMC Data Domain system, which local compression algorithm is used by default? A. gzfast B. gzip C. zip D. lz Correct Answer: D /Reference: QUESTION 8 8 Which benefit is provided by EMC Data Domain Stream-Informed Segment Layout (SISL) scaling architecture? A. Deduplication of data inline which eliminates the need to write duplicate data to disk B. Ability to quickly deduplicate data previously stored on the Data Domain system which allows faster ingest of data C. Ability to verify the data stored in the Data Domain file system for reliability D. Ability to transparently and automatically recover from disk read errors using RAID parity /Reference: QUESTION 9 9 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 /Reference: 4

5 QUESTION A customer is looking for a solution to backup their 20 TB EMC NAS system. The data has a low change rate and a 30-day retention period. The customer has a requirement to directly attach the backup target using Ethernet. Which EMC Data Domain configuration would best fit the customer's requirements? A. Data Domain system using NFS B. Data Domain system using DD Boost C. Data Domain system using NDMP VTL D. Data Domain system using CIFS Correct Answer: C /Reference: QUESTION A customer is looking for a solution to backup their 20 TB of image and video data on a Microsoft Windows server. The data has a high change rate and 3-day retention period. The customer can use either Fibre Channel or Ethernet for backups. Which EMC Data Domain configuration would best fit the customer's requirement? A. Data Domain is not a viable solution B. Data Domain system using CIFS C. Data Domain system using VTL D. Data Domain system using DD Boost /Reference: QUESTION A customer is deploying EMC Data Domain systems in four data centers worldwide. The Data 5 Domain systems will be using VTL. Each system will have a unique tape pool. The customer would like to replicate data to all sites. The data needs to be encrypted locally and then replicated to remote sites over the WAN. What needs to be deployed to meet the customer's requirements? A. Encryption for data at rest and pool replication with encryption enabled B. Encryption for data at rest and collection replication with encryption enabled C. Pool replication with encryption enabled D. Collection replication with encryption enabled

6 /Reference: QUESTION A company is backing up database, , and file system data types in their data center to a Data Domain system using a single backup server. The backup system administrator creates separate subdirectories for each of the three data types under the default /backup share. What does this allow the administrator to do? A. Improve file system cleaning performance B. Improve the performance of a 100 GB database backup C. Set up a single backup device in the software D. Analyze the compression of each data type Correct Answer: D /Reference: QUESTION Where is data that is written to an EMC Data Domain Archiver system initially stored? A. Active Tier B. Active Volume C. Archive Volume D. Archive Tier 6 /Reference: QUESTION A customer is currently using an EMC Data Domain system with VTL configured over Fibre Channel. They have a requirement to archive to tape. Which process is used to transport data to tape? A. Use the backup software to move backup data to tape B. Use the VTL interface to eject tapes to physical tapes C. Use the tape export function on the Data Domain system D. Use the Enterprise Manager on the Data Domain system

7 /Reference: QUESTION 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 Correct Answer: C /Reference: QUESTION Which LAN configuration allows backups and replication to run simultaneously without potentially impacting backup performance on an EMC Data Domain system? 7 A. Separate the traffic by using two separate Ethernet NICs B. Separate the traffic by using two separate VLANs on a NIC C. Reduce the traffic by using VLAN tagging on a NIC D. Reduce the traffic by using a larger MTU size /Reference: QUESTION 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 /Reference:

8 QUESTION 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 to 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 achieved by their current process? A. Encrypt the replication context B. Encrypt the data at rest C. Encrypt both the data at rest and the replication context D. None. The WAN link between the sites is already encrypted. 8 Correct Answer: B /Reference: QUESTION 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 /Reference: QUESTION As illustrated in the exhibit, 9 which cable connects one EMC Data Domain ES20 expansion shelf to another ES20 expansion shelf?

9 A. A B. B C. C D. D Correct Answer: B /Reference: QUESTION What is indicated by a flashing green SAS state LED on an EMC Data Domain ES20 SAS controller? A. Connection problem B. Connection established C. RAID reconstruction in progress D. Connection in process Correct Answer: D /Reference: 10 QUESTION When connecting EMC Data Domain expansion shelves, what should be done to avoid cable stress at the solder joints of the connector? A. Keep the ambient temperature at an acceptable level B. Use screw lock assemblies C. Leave enough cable to allow for free air flow D. Secure the cable to the rack door Correct Answer: B /Reference: QUESTION As illustrated in the exhibit, which cable connects the EMC Data Domain controller to an ES20 expansion shelf? A. A B. B

10 C. C D. D /Reference: 11 QUESTION Which cabling path is used to connect an existing EMC Data Doman ES20 expansion shelf to a new ES20 shelf? A. Existing Expansion Shelf EXP'N port => New Expansion Shelf HOST port B. Existing Expansion Shelf HOST port => New Expansion Shelf EXP'N port C. Existing Expansion Shelf HOST port => New Expansion Shelf HOST port D. Existing Expansion Shelf EXP'N port => New Expansion Shelf EXP'N port /Reference: QUESTION Refer to the Exhibit. When connecting a single expansion shelf to an EMC Data Doman DD670, what are the recommended SAS ports that should be used? A. 2a and 3a B. 2b and 3b C. 3a and 2b D. 3b and 2a Correct Answer: C /Reference: 12 QUESTION Refer to the Exhibit. When creating a second shelf set on an EMC Data Doman DD670, what are the two recommended SAS ports that should be used? A. 3a and 2a

11 B. 3a and 2b C. 3b and 2a D. 3b and 2b Correct Answer: C /Reference: QUESTION How many 40U racks are required for a DD890 GDA system with 12 EMC Data Domain ES20 expansion shelves? A. 1 B. 2 C. 3 D. 4 /Reference: QUESTION How many units of rack space are required to accommodate an EMC Data Domain DD670 with two ES20 expansion shelves? 13 A. 6 B. 8 C. 10 D. 12 Correct Answer: B /Reference: QUESTION A company does not allow systems to send 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

12 D. Third-party support can be configured /Reference: QUESTION Which protocols support connectivity to an EMC Data Domain system through an Ethernet interface? A. CIFS, NFS, DD Boost B. iscsi, 10 GigE, RMAN C. DD Boost, NFS, FCP D. CIFS, iscsi, RMAN /Reference: QUESTION When using a terminal emulation program for the initial configuration of an EMC Data Domain system, what is an accurate Flow Control setting? 14 A. DSR/DTR B. XON/XOFF C. RTS/CTS D. None Correct Answer: D /Reference: QUESTION Which tab in the Enterprise Manager GUI is used to configure IPMI on an EMC Data Domain system? A. Maintenance B. System Settings C. Hardware D. Status

13 /Reference: QUESTION Which interface is used for the initial access and configuration of an EMC Data Domain system? A. KVM ports or serial console B. Onboard eth0a as factory configured IP using Telnet C. IPMI management port D. Onboard eth0b as factory configured IP using SSH or HTTP /Reference: QUESTION What does the EMC Data Domain system command # net failover add veth0 interface eth4a eth4b primary eth4a accomplish? 15 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 Correct Answer: B /Reference: QUESTION Why would you increase the MTU size on an EMC Data Domain system? A. Maximize performance when using 10 Gb Ethernet B. Support Ethernet frames smaller than 1500 bytes C. Maximize performance when using 100 Mb/s Fast Ethernet D. Support 1 Gb/s Ethernet frames /Reference:

14 QUESTION A customer is implementing an EMC Data Domain system over CIFS using Symantec NetBackup. How would the Data Domain system be configured on the backup server? A. Storage unit B. adv_file device C. Jukebox D. Backup-to-disk folder /Reference: QUESTION A customer is implementing an EMC Data Domain system over CIFS using EMC NetWorker. How would the Data Domain system be configured on the backup server? 16 A. Storage unit B. adv_file device C. Jukebox D. Backup-to-disk folder Correct Answer: B /Reference: QUESTION A customer has a backup environment with EMC NetWorker and an EMC Data Domain system. Which NetWorker component stores tracking information about the backups on the Data Domain system? A. NetWorker Server B. Storage Node C. Media Server D. NetWorker Backup Client /Reference: QUESTION 40

15 40 A customer has an IBM Tivoli Storage Manager (TSM) environment with multiple EMC Data Domain systems. Backups are stored on Data Domain system A and replicated to Data Domain system B. The Tape Library contains a copy pool. Based on the exhibit, 17 how many copies of the data must the TSM server database track at the primary site? A. 1 B. 2 C. 3 D. 4 Correct Answer: B /Reference: QUESTION A backup administrator is configuring a new EMC Data Domain system as a destination device for backups in their Symantec NetBackup environment. The administrator has configured NFS on the Data Domain system and set up the mount points on their Linux media server. The administrator tested the connection by mounting the Data Domain system backup directory and copying a file. Which additional step should be performed to maintain connectivity? A. Create a zone between the media server and the Data Domain system B. Join the NIS domain C. Modify the fstab file D. Configure the AFTD device Correct Answer: C /Reference: 18 QUESTION A customer is deploying an EMC Data Domain system as a target for backups in their EMC NetWorker environment and a repository for MS SQL dump files. The NetWorker Storage Node is running Microsoft Windows Server The storage node, MS SQL Server, and Data Domain system are all connected to a private backup network through 1 Gb/s Ethernet. Which storage protocol can be used for both functions?

16 A. CIFS B. NFS C. DD Boost D. VTL /Reference: QUESTION A customer is deploying an EMC Data Domain system as a target for backups in their EMC NetWorker environment and a repository for UNIX log files. The NetWorker Storage Node is running Linux. The storage node, UNIX servers, and Data Domain system are all connected to a private backup network through 1 Gb/s Ethernet. Which storage protocol can be used for both functions? A. NFS B. CIFS C. DD Boost D. VTL /Reference: QUESTION A customer implemented an EMC Data Domain system in a Microsoft Windows environment two months ago. The Data Domain system was added to the Active Directory domain and backups ran 19 normally until now. The backup administrator is trying to access the CIFS share on the Data Domain system from the Windows storage node and is getting an access denied message. What is a possible cause? A. Data Domain system should be reconfigured for Active Directory support B. Time on the Data Domain system is more than five minutes apart from the Active Directory server C. Replication services on the Data Domain system are stopped D. Cleaning activities have been pending on the Data Domain system for more than one week Correct Answer: B /Reference:

17 QUESTION A customer implemented an EMC Data Domain system in a Microsoft Windows environment two months ago. The Data Domain system was added to the Active Directory domain and backups ran normally until now. The backup administrator is trying to access the CIFS share on the Data Domain system from the Windows storage node and is getting an access denied message. What is a possible cause? A. Privileges for the user account used by the Data Domain system were removed B. Time difference between the Data Domain system and the Active Directory server is less than two minutes C. Replication services on the Data Domain system are stopped D. Cleaning activities have been pending on the Data Domain system for more than one week /Reference: QUESTION When configuring backups to an EMC Data Domain system using VTL, what is a backup software recommendation? A. Disable multiplexing B. Decrease parallelism 20 C. Increase target sessions D. Set target sessions to "1" /Reference: QUESTION An EMC NetWorker customer is implementing a new EMC Data Domain system in their environment. Backup data will be transferred over a private IP network. The customer plans on using three different NetWorker pools with different retention periods. Which configuration is required? A. Set up multiple retention periods B. Create one AFTD for each pool C. Configure multiplexing across pools D. Avoid mixing different types of data in the same pool Correct Answer: B

18 /Reference: QUESTION A customer is implementing an EMC Data Domain system in their EMC NetWorker environment as illustrated in the exhibit. 21 The NFS mount point on the storage node for the Data Domain system is called "/bkp001". How is the backup device named in NetWorker? A. rd=sn_a:/bkp001 B. rd=bkp001:/dd01 C. rd=server_a:/sn_a D. rd=dd01:/bkp001 /Reference: QUESTION A customer is implementing an EMC Data Domain system in their EMC NetWorker environment using CIFS as illustrated in the exhibit. A CIFS share named "bkp001" has been created on the Data Domain system. How should the backup device be configured in NetWorker? A. rd=sn_a:\\dd01\bkp001 B. rd=dd01:/bkp001 C. rd=server_a:\\dd01\bkp001 D. \\dd01\bkp001 /Reference: 22 QUESTION In an EMC Data Domain environment, which protocol is required for DD Boost? A. CIFS B. Fibre Channel C. TCP/IP D. NDMP Correct Answer: C

19 /Reference: QUESTION An EMC Data Domain customer wants to replicate data between the four sites illustrated in the exhibit. The customer has the option to use DD Boost or NFS with their backup software. What is a key advantage of using DD Boost for backups in this environment instead of NFS? A. Catalog awareness of the replicas 23 B. Ability to use virtual tape pools to manage replication C. Increases deduplication ratios D. Reduces the amount of data to replicate /Reference: QUESTION What is a key advantage of using DD Boost for replication on an EMC Data Domain system? A. Allows the backup software catalog aware access to the replicated copy B. Allows the user to mount and test recovery through NFS/CIFS when completed C. Allows the user to manually import the backup image to access the replicated copy D. Enables the backup software to change compression ratios at multiple sites /Reference: QUESTION In an EMC Data Domain environment with DD Boost and DSP, which deduplication processes are performed at the backup server? A. Fingerprinting, filtering, and compression B. Segmentation, filtering, and writing C. Fingerprinting, compression, and writing D. Segmentation, fingerprinting, and compression Correct Answer: D

20 /Reference: QUESTION The exhibit illustrates an EMC Data Domain environment with DD Boost and DSP. 24 Which process is represented by Step 3? A. Filter B. Fingerprint C. Segment D. Compress /Reference: QUESTION A customer has a backup environment with an EMC Data Domain system using DD Boost as illustrated in the exhibit. Distributed Segment Processing is enabled. Which component segments the data in the deduplication process? A. Backup Server B. LAN Clients C. Data Domain system A D. Data Domain system B 25 /Reference: QUESTION A customer has a backup environment with an EMC Data Domain system using DD Boost as illustrated in the exhibit. Distributed Segment Processing is enabled. Which component creates fingerprints of the data in the deduplication process? A. Data Domain system A B. Data Domain system B C. Backup Server D. LAN Clients Correct Answer: C

21 /Reference: QUESTION A customer has enabled CIFS and configured the CIFS shares on an EMC Data Domain system to allow access through a Symantec NetBackup Media Server. What is a step that must be done on the Media Server to enable read/write access to the shared directory and configure the devices? A. Configure the NetBackup services to start as a user that has access to the share B. Configure a NetBackup disk pool to be used by the NetBackup devices C. Create a mapped network drive that reconnects when the NetBackup service is started 26 D. Enable the DD Boost plugin on the NetBackup Media Server /Reference: QUESTION A customer is using DD Boost on their EMC Data Domain system. They want to use more than one network interface to send data to the Data Domain system from their Symantec NetBackup Media Servers. Which DD Boost feature can be used to accomplish this task? A. Interface groups B. LACP C. IP Aliasing D. DSP /Reference: QUESTION 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 Correct Answer: C

22 /Reference: QUESTION Which two link aggregation methods are supported on an EMC Data Domain system? A. Balanced-xor and Round Robin 27 B. Balanced-xor and PAgP C. Balanced-rr and Round Robin D. Balanced-xor and Failover /Reference: QUESTION You have been tasked with setting up a VTL on an EMC Data Domain system in an EMC NetWorker environment. To maximize deduplication, which value should be used for the "Target Sessions" and "Max Sessions" parameters? A. 1, 1 B. 1, 2 C. 1, Unlimited D. Unlimited, 1 /Reference: QUESTION A customer is writing critical data to the pre-configured, default NFS share on an EMC Data Domain system for subsequent 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. /ddvar B. /backup C. /data/col1 D. /data/col1/repl Correct Answer: B /Reference:

23 QUESTION On an EMC Data Domain system, what is the role of file system cleaning? 28 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 /Reference: QUESTION Which characteristic accurately describes EMC Data Domain Encryption software? A. Supports both 128-bit and 256-bit AES algorithms B. Utilizes multiple encryption keys for separate data sets C. Supports granular encryption of specific data sets D. Utilizes self-encrypting SATA drives /Reference: QUESTION What is a characteristic of an EMC Data Domain Encryption software option? A. If the passphrase is lost, a new one can be obtained from technical support B. Encryption occurs in the backup server before it is sent to the Data Domain system C. After encryption is enabled, the file system cannot be locked D. Data written before encryption is enabled is not automatically encrypted. Correct Answer: D /Reference: QUESTION What is a characteristic of EMC Data Domain pool replication?

24 A. Replicates the virtual tapes B. Replicates only data that matches the criteria of the configured pool 29 C. Replicates the virtual library configuration and tapes D. Determines retention time of the replicated virtual tapes /Reference: QUESTION What is a valid use for link aggregation on an EMC Data Domain system? A. Utilize multiple network links for enhanced throughput B. Share network traffic between 1 Gb and 10 Gb links C. Overcome CPU limitations of backup servers D. Automatically restart failed backups if a network link is lost /Reference: QUESTION Which EMC Data Domain feature requires a software license? A. Link Aggregation B. Virtual Tape Library C. VLAN Tagging D. Snapshots Correct Answer: B /Reference: QUESTION Which EMC Data Domain system feature requires a license? A. Encryption B. Snapshots C. Fastcopy D. Cleaning

25 30 /Reference: QUESTION A company is replicating two specific directories between two EMC Data Domain systems using a 4 Mb/s WAN connection. What can be done on the Data Domain systems to maximize replication performance? A. Enable low bandwidth optimization B. Implement collection replication C. Add more replication contexts D. Increase WAN bandwidth /Reference: QUESTION What is a benefit of EMC Data Domain Boost? A. Improves deduplication over VTL B. Eliminates the need for replication between two Data Domain systems C. Improves performance with advanced load balancing and failover D. Does not require a software license Correct Answer: C /Reference: QUESTION 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 31

26 /Reference: QUESTION A customer is attempting to create a read-only copy of their backup data on an EMC Data Domain system to achieve additional protection. Which Data Domain system feature would accomplish this requirement? A. Snapshot B. Data Invulnerability Architecture C. Fastcopy D. Retention Lock /Reference: QUESTION Which operation uses the fastcopy command? A. Copying data from a media server to a Data Domain system B. Copying data from a Data Domain system to a NetBackup Media Server C. Copying data from a directory to a snapshot D. Copying data from a snapshot to a directory Correct Answer: D /Reference: QUESTION What is the maximum number of snapshots on an EMC Data Domain system? A. 255 B. 256 C. 750 D Correct Answer: C

27 /Reference: QUESTION An EMC Data Domain customer has setup a DD VTL for their backup software. They created slots, drives, and tapes. The backup software shows the tape drives and the robot, but not the tapes. Which step was missed on the Data Domain system? A. Import the virtual tapes in the VTL B. Configure Fibre Channel LUN masking C. Tape labels are not defined D. Incorrect media type is defined /Reference: QUESTION 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 Correct Answer: B /Reference: QUESTION 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 33 Which type of replication meets the customer's requirements? A. Collection B. Directory C. Pool D. Snapshot

28 /Reference: QUESTION When setting the MTU size for an Ethernet interface on an EMC Data Domain system, what is the maximum supported value? A B C D Correct Answer: C /Reference: QUESTION Based on the exhibit, 34 what does the difference between the inbound network rate and writes to disk indicate on the EMC Data Domain system? A. Much of the data is unique and being stored to disk B. A problem exists with the Data Domain system C. Much of the data is redundant and being deduplicated D. Data Domain system is deduplicating data faster than the backup server can send it Correct Answer: C /Reference: QUESTION On an EMC Data Domain system, which licensed software option allows an administrator to protect data from deletion by the backup software? A. Retention Lock B. Snapshots C. Replicator D. Fastcopy

29 /Reference: QUESTION When using the EMC Data Domain Virtual Tape Library software option, which backup software operation allows space to be reclaimed on a Data Domain system? A. Relabeling tapes B. Exporting tapes C. Vaulting tapes D. Importing tapes /Reference: QUESTION When using link aggregation across Ethernet ports on an EMC Data Domain system, which OSI layer provides load balancing by use of the MAC address? A. 2 B. 3 C. 4 D. 1 Correct Answer: D /Reference: QUESTION When using link aggregation across Ethernet ports on an EMC Data Domain system, which OSI layers provide load balancing by use of the IP layer? A. 1 and 3 B. 1 and 4 C. 2 and 3 D. 3 and 4 Correct Answer: D /Reference:

30 QUESTION When creating virtual tapes on an EMC Data Domain system by specifying "L3" in the suffix of the virtual media barcode, which tape size will be created? A. 10 GB B. 50 GB C. 100 GB D. 400 GB Correct Answer: D /Reference: QUESTION 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 Correct Answer: D /Reference: QUESTION Based on the exhibit, 37 what is the total aggregate compression factor on the EMC Data Domain system? A. 7.3x B. 16.0x C. 16.4x D. 93.8x Correct Answer: B /Reference: QUESTION 88

31 88 When logging into an EMC Data Domain system for the first time during installation, which connection type can be used? A. Serial Console B. Telnet C. IPMI D. FTP /Reference: QUESTION When upgrading an EMC Data Domain system, where can the upgrade RPM file be located? A. /ddvar/releases B. /ddvar C. /backup D. /ddvar/system /Reference: QUESTION When looking at the output from system show performance as illustrated in the exhibit, 38 what does the information outlined in the box represent? A. Amount of data written to memory over 1 minute B. Amount of data written to the network over 1 minute C. Amount of data written to disk over 1 minute D. Amount of data written to NVRAM over 1 minute Correct Answer: B /Reference: QUESTION When looking at the output from system show performance as illustrated in the exhibit, what is represented by the value 26.7?

32 A. Global compression over 1 minute B. Gz compression over 1 minute C. Global compression over 1 hour D. Gz compression over 1 hour /Reference: 39 QUESTION 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 Correct Answer: B /Reference: QUESTION An EMC Data Domain customer has been achieving a compression ratio of 14:1 for database backups over the past year. Two weeks ago the aggregate compression dropped from 14:1 to 4:1. What is a possible cause for this change in compression? A. User changed from single-threaded backups to multiplexed backups B. User changed from five backups per week to seven backups per week C. User changed the time backups start D. User changed from a 1 GB NIC to a 10 GB NIC /Reference: QUESTION What does the term "compression factor" refer to in the exhibit? 40

33 A. Aggregate data reduction ratio B. Space used after compression C. Data sent to the EMC Data Domain system D. Total available space remaining /Reference: QUESTION On an EMC Data Domain system, what is the purpose of the log host add <host> command? A. Add a system to the list that receives alert messages B. Add a system to the list that receives system log messages C. Enable sending log messages using SNMP D. Enable the Data Domain system to receive log messages Correct Answer: B /Reference: 41 QUESTION An organization has 3000 GB of file system data with a daily change rate of 10%. Assume the first backup reduces by a factor of 3 (3x), daily incremental backups reduce by a factor of 10 (10x), and subsequent full backups reduce by a factor of 30 (30x). Required retention is 10 weeks (1 weekly full/6 daily incrementals) and system utilization cannot exceed 50% of available capacity. What is the minimum EMC Data Domain storage required? A GB B GB C GB D GB Correct Answer: D /Reference: QUESTION An organization has 6000 GB of file system data with a daily change rate of 10%. Assume the first backup reduces by a factor of 3 (3x), daily incremental backups reduce by a factor of 10 (10x), and subsequent full backups reduce by a factor of 30 (30x). Required retention is 10 weeks (1 weekly full/6 daily incrementals) and system utilization cannot exceed 50% of available capacity.

34 What is the minimum EMC Data Domain storage required? A GB B GB C GB D GB Correct Answer: D /Reference: QUESTION As represented in the exhibit, 42 which metric is the Local-Comp Factor reporting in the filesys show compression output? A. Reduction in segment size resulting from the configured compression type lz, gz, or gzfast B. Reduction in segment size from EMC DD Boost plugin clients C. Reduction in segment size from low bandwidth optimized replication at the source D. Deduplication reduction factor for the local EMC Data Domain system /Reference: QUESTION Which pieces of information are necessary to determine the capacity requirements of an EMC Data Domain system? A. Full backup size, backup frequency, anticipated deduplication ratios, and retention policy B. Backup window duration, backup frequency, retention policy, and number of backup tapes created weekly C. Full backup size, recovery time objective, anticipated deduplication ratios, and retention policy D. Backup window duration, recovery time objective, anticipated deduplication ratios, and frequency of data restores /Reference: 43 QUESTION

35 What is the default behavior for messages log files in an EMC Data Domain system? A. Every day at 06:00 a new log file is opened and the previous log file is renamed B. Every Sunday at 03:00 a new log file is opened and the previous log file is deleted C. Every Sunday at 03:00 a new log file is opened and the previous log file is renamed D. Every day at 06:00 a new log file is opened and the previous log file is deleted Correct Answer: C /Reference: QUESTION 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 /Reference: 44 QUESTION An EMC Data Domain system has 300 TB of usable storage with 270 TB currently used. Daily backups are consuming an additional 5 TB per day. Based on this trend, what will occur if nothing is changed? A. Compression will keep increasing B. Disk performance will decrease C. File system will run cleaning more often D. File system will run out of space Correct Answer: D /Reference: QUESTION DRAG DROP A customer has a Symantec NetBackup environment with an EMC Data Domain system using the CIFS transport protocol You have been tasked with configuring and testing backup functionality between NetBackup and the Domain system.

36 What is the correct sequence of steps for creating and validating a backup? A. B. C. D. Correct Answer: /Reference: 45 Macintosh HD:Users:iMac:Desktop:Untitled-1.jpg QUESTION DRAG DROP What is the correct sequence of steps for powering up an EMC Data Domain system with an expansion shelf? 46 A. B. C. D. Correct Answer: /Reference: Macintosh HD:Users:iMac:Desktop:Untitled-1.png