Quiz
DD
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Perguntas do quiz (33)
1A 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 2008. 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?- ACIFS
- BNFS
- CDD Boost
- DVTL
2What is the default behavior for messages log files in an EMC Data Domain system?
- AEvery day at 06:00 a new log file is opened and the previous log file is renamed
- BEvery Sunday at 03:00 a new log file is opened and the previous log file is deleted
- CEvery Sunday at 03:00 a new log file is opened and the previous log file is renamed
- DEvery day at 06:00 a new log file is opened and the previous log file is deleted
3In an EMC Data Domain environment, which protocol is required for DD Boost?
- ACIFS
- BFibre Channel
- CTCP/IP
- DNDMP
4A 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?
- ABackup Server
- BLAN Clients
- CData Domain system A
- DData Domain system B
5What is a characteristic of EMC Data Domain variable segment size deduplication?
- ASegmentation is based on bytes not files
- BEntire data stream moves to make room for the new segment
- CA file is stored and duplicate versions are pointed to the original
- DVariable segment size is not supported on a Data Domain system
6A 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?- AData Domain system A
- BData Domain system B
- CBackup Server
- DLAN Clients
7A 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?- ALow bandwidth optimization
- BGz compression
- CInitial replication seeding
- DBi-directional replication
8A 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?- ANFS
- BCIFS
- CDD Boost
- DVTL
9On 8/15, what causes the drop in disk usage on the EMC Data Domain system as
illustrated in the exhibit?
- AData was deleted on the system and file system cleaning completed
- BData was deleted on the system and no longer used
- CBetter deduplication ratios and less storage was needed
- DMore storage was added and allowed for higher compression
10Which protocols support connectivity to an EMC Data Domain system through an Ethernet
interface?- ACIFS, NFS, DD Boost
- BiSCSI, 10 GigE, RMAN
- CDD Boost, NFS, FCP
- DCIFS, iSCSI, RMAN
11A company does not allow systems to send email to external accounts. What effect would
this have on EMC Data Domain support?- AAutosupports and hardware failures cannot be tracked
- BSystem can be configured to use Connect EMC
- CSystem can send alerts, but autosupports will need to be disabled
- DThird-party email support can be configured
12In an EMC Data Domain environment with DD Boost and DSP, which deduplication
processes are performed at the backup server?- AFingerprinting, filtering, and compression
- BSegmentation, filtering, and writing
- CFingerprinting, compression, and writing
- DSegmentation, fingerprinting, and compression
13When setting the MTU size for an Ethernet interface on an EMC Data Domain system,
what is the maximum supported value?- A1500
- B9000
- C9014
- D9040
14Which pieces of information are necessary to determine the capacity requirements of an
EMC Data Domain system?- AFull backup size, backup frequency, anticipated deduplication ratios, and retention policy
- BBackup window duration, backup frequency, retention policy, and number of backup tapes created weekly
- CFull backup size, recovery time objective, anticipated deduplication ratios, and retention policy
- DBackup window duration, recovery time objective, anticipated deduplication ratios, and frequency of data restores
15What is a key advantage of using DD Boost for replication on an EMC Data Domain
system?- AAllows the backup software catalog aware access to the replicated copy
- BAllows the user to mount and test recovery through NFS/CIFS when completed
- CAllows the user to manually import the backup image to access the replicated copy
- DEnables the backup software to change compression ratios at multiple sites
16A customer is interested in deploying DD Boost for their current EMC Data Domain
system. They are aware of Distributed Segment Processing (DSP) and want to know the
data flow when they enable DSP. What describes the data flow from the backup host to
the Data Domain system?- ASegmenting, fingerprinting, and compression occur on the backup host. Fingerprint
filtering and writes occur on the Data Domain. - BSegmenting, fingerprinting, and fingerprint filtering occur on the backup host.
Compression and writes occur on the Data Domain. - CFingerprinting, compression, and fingerprint filtering occur on the backup host.
Segmenting and writes occur on the Data Domain. - DSegmenting, fingerprinting, fingerprint filtering, and compression occur on the
backup host. Writes occur on the Data Domain.
- ASegmenting, fingerprinting, and compression occur on the backup host. Fingerprint
17Which method of deduplication yields better deduplication results for multiple data
types?- AVariable segment size deduplication due to its ability to add data to a variable
segment and move the data stream. - BFixed segment size deduplication due to its ability to add data to a fixed segment
without having to move the data stream. - CFixed segment size deduplication due to its ability to add data to a fixed segment
and move the data stream. - DVariable segment size deduplication due to its ability to add data to a variable
segment without having to move the data stream.
- AVariable segment size deduplication due to its ability to add data to a variable
18What is a component of the EMC Data Domain Data Invulnerability Architecture that
protects against data loss?- AFile system recoverability
- BSummary vector identification
- CSystem sanitization
- DSegment locality processing
19You are implementing an EMC Data Domain system at a location that is not staffed.
However, the customer has network connectivity to the site from the main data center.
In the event of a system crash, what can be configured to allow the customer the ability
to cycle power?- ASerial over LAN
- BSNMP
- CIPMI
- DReplication
20You have implemented an EMC Data Domain system with directory replication. After
replication has occurred, the customer notices that the space utilization on the source
and destination systems is different. How can this be explained?- ADifference in global compression
- BDifference in the encryption algorithm
- CCIFS/NFS is mixed on the same directory
- DDestination directory may be corrupted
21An 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?- AUse encryption of data in flight to the hosted disaster recovery site
- BEnable encryption of data at rest at the disaster recovery site
- CEnable encryption of data at rest at the source site
- DWAN link between the sites is already encrypted
22An 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?- AEncrypt the replication context
- BEncrypt the data at rest
- CEncrypt the data at rest and the replication context
- DEncryption is not required
23What is indicated by a flashing green SAS state LED on an EMC Data Domain ES20
SAS controller?- AConnection problem
- BConnection established
- CRAID reconstruction in progress
- DConnection in process
24customer 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 processing All
remaining disks are active with no more spare disks
How many additional disk(s) can fail before data becomes unrecoverable?- A0
- B1
- C2
- D3
25What is an advantage of inline DE duplication over post-process DE duplication?
- AReduced time to disaster recovery readiness when replicating
- BDisk cache tier ensures consistent write speed
- CIncreased deduplication from the use of variable segment sizes
- DWrite speed is increased by the number of disk spindles
26What is a component of Data Domain Data Invulnerability Architecture that protects against data
loss?- AFault avoidance
- BEncryption
- CSystem sanitization
- DSnapshots
27What is a component of Data Domain Data Invulnerability Architecture that protects against data
loss?- AEncryption
- BSystem sanitization
- CFile system recovery
- DSnapshots
28Which EMC Data Domain technology allows inline deduplication to occur fast and efficiently?
- ASISL scaling architecture
- BData Domain Data Invulnerability Architecture
- CDD Boost
- DSATA
29Which variable length segment size range is used for EMC Data Domain deduplication?
- A2 - 8 KB
- B4 - 12 KB
- C6 - 16 KB
- D8 - 18 KB
30In an EMC Data Domain system, which local compression algorithm is used by default?
- Agzfast
- Bgzip
- Czip
- Dlz
31Which benefit is provided by EMC Data Domain Stream-Informed Segment Layout (SISL) scaling
architecture?- ADeduplicaiton of data inline which eliminates the need to write duplicate data to disk
- Bn Ability to quickly DE duplicate data previously stored on the Data Domain system which allows
faster ingest of data - CAbility to verify the data stored in the Data Domain file system for reliability
- DAbility to transparently and automatically recover from disk read errors using RAID parity
32A 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?- AReplication
- BSnapshot
- CFastcopy
- DRetenton Lock
33A 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?- AData Domain system using NFS
- BData Domain system using DD Boost
- CData Domain system using NDMP VTL
- DData Domain system using CIFS
Informações
- Descrição
- Quiz sobre DD, criado por Renea Holmes em 10-08-2017.
- Autor
- Renea Holmes
- Idioma
- English
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