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单选题After you back up /export using a file system snapshot， and you have removed the snapshot， you also need to remove the backing store. If the snapshot was created with：  # mkdir /var/tmp/backup-snaps  # fssnap -o  bs=/var/tmp/backup-snaps /export   Whic

题目
单选题
After you back up /export using a file system snapshot， and you have removed the snapshot， you also need to remove the backing store. If the snapshot was created with：  # mkdir /var/tmp/backup-snaps  # fssnap -o  bs=/var/tmp/backup-snaps /export   Which file do you need to remove？ （）
A

A

B

B

C

C

D

D

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相似问题和答案

第1题：

You have just issued the command user@router save current.conf.Assuming the default settings, where in the file system is current.conf saved?()

A. /var/tmp/

B. /var/config/saved/

C. /var/home/user/

D. /config/


参考答案：C

第2题：

You need to restore some files from a file system. The file system was backed up from a snapshot.  Which command will correctly restore these files？（）

  • A、 fssnap -i
  • B、 fssnap -r
  • C、 ufsrestore -i
  • D、 snaprestore -i

正确答案:C

第3题：

You have taken a Logical Volume Manager (LVM) snapshot backup of a volume that contains the MySQL data directory. Why is it important to remove snapshots after completing a RAW backup in this way?()

A.The snapshot size will continue to grow as changes to the volume are made

B.The snapshots take a significant amount of disk space as they are a duplicate copy of the data

C.The system can only support one snapshot per volume, and you need to remove it to be able to take your next backup

D.The system keeps a copy of changes in memory and can cause an out of memory event


参考答案：A

第4题：

You have taken a Logical Volume Manager (LVM) snapshot backup of a volume that contains the MySQL data directory. Why is it important to remove snapshots after completing a RAW backup in this way?（）

  • A、The snapshot size will continue to grow as changes to the volume are made
  • B、The snapshots take a significant amount of disk space as they are a duplicate copy of the data
  • C、The system can only support one snapshot per volume, and you need to remove it to be able to take your next backup
  • D、The system keeps a copy of changes in memory and can cause an out of memory event

正确答案:A

第5题：

You have just issued the command user@router# save current.conf.Assuming the default settings, where in the file system is current.conf saved?（）

  • A、/var/tmp/
  • B、/var/config/saved/
  • C、/var/home/user/
  • D、/config/

正确答案:C

第6题：

You are the administrator of a SQL Server 2000 computer. You want to set up snapshot replication on the server. The server will serve as Publisher and Distributor for a minimum of 40 Subscribers.

Currently, you want to publish 3GB of data, but the data is expected to grow over time. Subscribers will receive a new snapshot each month.

You want to minimize the workload on the Publisher/Distributor. Which two actions should you take to configure snapshot replication? (Each correct answer presents part of the solution. Choose two)

A．Store the snapshot in the default folder on the Publisher/Distributor.

B．Store the snapshot in an alternative folder on the Publisher/Distributor.

C．Store the snapshot in a shared folder on a file server.

D．Create pull subscriptions.

E．Create push subscriptions.


正确答案：CD
解析：Explanation:
C: In SQL Server 2000 it is possible to store snapshot files in a location other than or in addition to the default location. Alternate locations can be on another server, on a network share, or on removable media. Saving snapshot files in an alternate location can alleviate disk overhead on the Distributor.

However, Subscribers running earlier versions of SQL Server cannot use the alternate snapshot location. When specifying the snapshot location on a network share, it is recommended that that share folder be dedicated for snapshot storage and files. Subscribers that need to access the snapshot files will need Read permission to the snapshot location and appropriate folders. If the snapshot folder is not shared for the appropriate Subscribers, the replication agents cannot access the folder and the replication will fail.

D: With pull subscriptions the Subscriber requests data and updates that are made at the Publisher. Thus allows the user at the Subscriber to determine when the data changes are synchronized. With pull subscriptions the administration of the subscription takes place at the Subscriber.

A feature of pull subscriptions is that the Distribution Agent for snapshot and transactional publications and the Merge Agent for merge publications all run at the Subscriber. This can result in a reduction of the amount of processing overhead on the Distributor. However, if needed, the Distribution Agent or Merge Agent can be run at the Distributor to offload agent processing from the Subscriber.

Incorrect Answers:
A: The default location for snapshot replication files are specified in the Specify Snapshot Folder dialog box that appears in the Configure Publishing and Distribution Wizard and in the Create Publication Wizard. The default location is usually on the Distributor.

B: In SQL Server 2000 it is possible to store snapshot files in a location other than or in addition to the default location. Alternate locations can be on another server, on a network share, or on removable media. Saving snapshot files in an alternate location can alleviate disk overhead on the Distributor, particularly when it is located on another server, or a file server.

E: Push subscriptions are created at the Publisher. This places higher processor overhead at a Publisher using a local Distributor as the Distribution Agent for the snapshot publication runs at the Distributor.

第7题：

You have a Windows Server 2008 R2 Hyper-V server. Hyper-V Manager shows a state of Paused and a status of Disk（s） running out of space for one of the virtual machines （VMs）. You delete several unneeded snapshots from the VM snapshot tree， and you resume the VM. After less than one minute， the state of the VM reverts to Paused. You need to enable the VM to return to a state of Running. What should you do first？（）

  • A、Turn off the VM.
  • B、Export the VM.
  • C、Reset the VM.
  • D、Save the VM.

正确答案:A

第8题：

Afteryoubackup/exportusingafilesystemsnapshot，andyouhaveremovedthesnapshot，youalsoneedtoremovethebackingstore.Ifthesnapshotwascreatedwith： mkdir/var/tmp/backup-snapsfssnap-obs=/var/tmp/backup-snaps/exportWhichfiledoyouneedtoremove？（）

A.A

B.B

C.C

D.D


参考答案：D

第9题：

Your database is running in the ARCHIVELOG mode. You have configured RMAN for backup and recovery operations. You execute the following command from the RMAN prompt：   RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON；   After executing this command， in which of the following cases will RMAN make an auto-backup of the control file？ （）

  • A、 when you change the name of a datafile
  • B、 when you drop a table from the database
  • C、 when you take an export of the database
  • D、 when you back up the database using OS utilities
  • E、 when you issue an ALTER SYSTEM SWITCH LOGFILE statement
  • F、 when you issue a BACKUP command from inside the RMAN run block

正确答案:A,E,F

第10题：

A snapshot of the /export/project file system has been taken. Prior to backing up the file system， you need to check to see if certain files are on the snapshot. The snapshot needs to be mounted to check for these files.  Which command will mount the snapshot？ （）

  • A、 mount -F ufs -o ro /dev/fssnap/0 /check
  • B、 mount -F ufs -o rw /dev/fssnap/0 /check
  • C、 mount -F ufs -o ro /export/project /check
  • D、 mount -F ufs -o rw /export/project /check

正确答案:A

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