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試験番号：E20-895問題集
試験科目：EMC 「Backup Recovery - Avamar Expert Exam for Implementation Engineers」
問題と解答：全106問
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NO.1 An existing EMC Avamar customer has noticed that garbage collection is not running properly on a
daily basis. The garbage collection logs show the process failing with the MSG_ERR_FULL error each
time it attempts to run. The Avamar Administrator reports the server capacity as 96%.What could be
causing garbage collection to fail?
A. GSAN capacity is over 85%
B. Operating system capacity is over 85%
C. Operating system capacity is over 65%
D. Avamar server has reached the health check limit
Answer: B
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NO.2 A new EMC Avamar customer wants help in setting up their backup groups and schedules. They are
migrating from a traditional tape backup solution with full backups performed once a week and
incrementals in between. They have a regulatory requirement to keep an annual backup for seven years
but want to keep all other backups for one month. Both Microsoft Windows and Linux clients will be
backed up. Based on best practices, what should be recommended?
A. Include all clients in the same group using one dataset and an advanced retention policy
B. Use a separate group for each operating system /retention combination
C. Enable the default group and use that group for all backups
D. Use one group for weekly backups and one for the other days of the week
Answer: A
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NO.3 An EMC customer has a three-node cluster with the Avamar Windows client installed. Each node has
the Avamar Exchange 2007 plug-in installed. What should be done to avoid backing up the same data
multiple times within a backup window?
A. Exclude virtual node file systems from the physical node dataset
B. Ensure the Quorum drive is backed up only once per week instead of nightly C. Ensure both the
physical and virtual nodes are in the same Avamar group
D. Verify that the Exchange database backup is not scheduled at the same time as the file system backup
Answer: A
EMC E20-895参考書 E20-895練習問題 E20-895
NO.4 An EMC Avamar customer is running a backup that is being written to a Data Domain system. The
Data Domain cleaning schedule runs at 8 A.M. on Tuesday mornings. Avamar maintenance runs daily at
6 A.M. A backup has completed successfully; however, it is no longer needed. The customer manually
deletes the backup on Wednesday afternoon using the Avamar Administrator.
When is the space reclaimed on the Data Domain system?
A. At the next Data Domain file system cleaning
B. Immediately on the Data Domain system
C. At the next scheduled Avamar garbage collection
D. When manually deleted from the Data Domain system
Answer: A
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NO.5 An EMC Avamar customer has a Celerra running DART 6.0 with 20 TB of data. There are approximately
10 million files distributed across two Data Movers. They would like to backup the NAS in approximately
five hours. What is the maximum number of streams that can be configured?
A. 2
B. 4
C. 8
D. 16
Answer: D
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NO.6 A customer has been performing full backups of their SharePoint farm to an Avamar server. They have
installed the Avamar SharePoint backup client without the GLR feature. They want to perform a restore of
only one web application, but do not want to take any of the SharePoint farm servers offline. What should
be done?
A. Install GLR onto a separate Windows client outside of the farm
B. Install GLR onto the application server to which the web application is to be recovered
C. Install GLR onto all servers of the SharePoint farm
D. Install GLR onto the web front-end server
Answer: A
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NO.7 An EMC Avamar customer is currently using a 2 TB Avamar Virtual Edition (AVE) for their backup
environment. They want to begin backing up several Oracle databases and file servers running on a new
ESX server. It is determined that a separate AVE should be added to the backup environment for these
new backups.
What should be done when implementing the new configuration?
A. Install the new AVE on a different ESX server from the first AVE
B. Use thin provisioning to create the new AVE
C. Run benchmark tests for acceptable TCP/IP performance
D. Use RAID 6 for the physical disk storing the new virtual disk
Answer: A
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NO.8 An EMC customer is using NetWorker with integrated Avamar deduplication nodes. They have expired
a large amount of data on the NetWorker server. After several hours, they notice that the index entries
have been deleted from NetWorker. However, data has not been removed from the deduplication node.
What is a potential reason?
A. Garbage collection has not yet occurred on the deduplication node
B. Data must also be manually expired from within Avamar
C. Garbage collection has been suspended on the NetWorker server
D. Saveset metadata has not been purged from the storage node
Answer: A
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NO.9 An EMC Avamar backup administrator wants to use their company login account for administering an
Avamar server. The procedures were followed successfully to update the configuration for external LDAP
authentication. However, they still cannot successfully log into Avamar Administrator with the account.
Which action is needed?
A. Assign a default password to the account in Avamar
B. Add the account to the Avamar server O/S
C. Add the user account to Avamar and assign a role
D. Add an Avamar domain with the same name as the LDAP domain
Answer: C
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NO.10 An EMC Avamar customer is running a backup that is being directed to a Data Domain system. The
backup has completed successfully; however, it is no longer needed. From Avamar Administrator, the
customer manually deletes the backup.
When is the backup data deleted from the Data Domain system.?
A. Immediately on the Data Domain system
B. Manually deleted on the Data Domain system by the administrator
C. Next time the Avamar system runs garbage collection
D. Next time the Data Domain file system cleaning operation runs
Answer: C
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NO.11 A customer is successfully backing up 50 virtual machines (VMs) hosted on two ESX hosts. There are
two datastores and two proxy servers used for VADP-based backups. They deploy another proxy server
to backup 10 new VMs residing on a new datastore. The backups for the new VMs failed with the
following error:
Event Code: 30931 - Failed to initiate a backup or restore of a virtual machine because no proxy was
found to service the virtual machine. What caused this error?
A. Not enough space is allocated on the proxy server to mount VM snaps
B. Proxy server is not provisioned on the new datastore
C. Proxy host has not been given backup privilege in the vCenter
D. New datastore is not selected for the proxy server in Avamar Administrator
Answer: D
EMC認定試験 E20-895認定試験 E20-895 E20-895 E20-895
NO.12 An EMC employee has been assigned to run securedelete against two clients for a total of 20 GBs on
an Avamar server. During a planning discussion with the customer, they want to know what the impact on
their Avamar server would be while securedelete is running.
What is the correct response to the customer?
A. GSAN will be in admin mode and the Avamar server will be read only
B. Avamar will continue to function with a limited amount of available threads
C. GSAN will be shut down during the extent of the securedelete task
D. Avamar will continue to function without any limitations
Answer: A
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NO.13 A customer has an EMC Avamar integrated with a Data Domain system as a backup solution. They
would like to use encryption for the backups that are directed to the Data Domain system.
Which method(s) of encryption can be used in this environment?
A. Enable encryption-at-rest on the Data Domain system
B. Enable in-flight encryption between the client and the Data Domain system
C. Both in-flight encryption and encryption-at-rest are not supported
D. Enable both in-flight encryption and encryption-at-rest
Answer: A
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NO.14 A customer has an EMC Avamar system backing up a Celerra running DART 6.0 using a single 36 GB
NDMP Accelerator Node. They are also going to back up a VNX OE 7.0 system using the same NDMP
Accelerator. Each NAS device has four volumes configured on it. Backups will be configured on the
Avamar system for both NAS storage devices to start at the same time.
What will occur when the NDMP backups start using default settings?
A. Both backups will start with two active streams each
B. One NAS device will start its backup with four streams, the other will queue
C. One NAS device will start its backup with one stream, the other will queue
D. Both backups will start with one stream each
Answer: B
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NO.15 A customer has setup their EMC Celerra to backup through an Avamar NDMP Accelerator Node. They
are not seeing any increased performance since the initial backup. They have investigated the Celerra
and there are no outstanding issues.
What is a potential reason for the poor backup performance?
A. Dataset options are set to Level 0
B. Dataset advanced option is blank
C. Data has a high change rate
D. Dataset options are set to Level 1
Answer: A
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