更多"An administrator is required to bac"的相关试题:
[单项选择]A system administrator needs to backup datavg which contains a database that pre-allocates files by padding them with nulls, similar to treating them as sparse files. In order to effectively backup and be able to restore the datavg files, which backup method should be used?（）
A. savevg
B. tar
C. cpio
D. mksysb
[单项选择] An administrator trying to restore a backup from tape encounters read errors. The administrator suspects that it could be an issue with the block device. What is the appropriate method to resolve this issue?（）
A. Set the block size to 0.
B. Read the tape using the tctl command.
C. Use the 'cpio' command to override tape device settings.
D. Run the 'dd' command to identify the block size from the tape.
[单项选择] As a network administrator, you are required to deploy MPLS technology. During the deployment, it is recommended to apply conditional label advertising. What is most probably the reason for that?（）
A. to enable label switching on the frame mode interface
B. to restrict MPLS availability to predefined time periods
C. to restrict end users from seeing the routers in the MPLS network
D. to restrict label switching to a limited number of networks
[多项选择]As a network administrator, you are required to configure a switch port for a private Virtual LAN. In such a situation, which three of the following connection modes will be available during the configuration process? （）(Choose three.)
A. isolated mode
B. modular mode
C. community mode
D. promiscuous mode
E. non-isolated
F. permanent
[多项选择]要求管理员每晚利用单一LTO2磁带备份250GB的数据。管理员报告，在工作完成之前，磁带驱动器的可用空间不足。以下哪几种方法可让管理员备份这么多数据？（）
A. 压缩LTO2驱动器上的内容
B. 在现有驱动器中使用LTO3磁带
C. 减少要备份的数据量
D. 将LTO2驱动器和磁带更换为LTO3驱动器和磁带
E. 将数据分为两份，分两个晚上进行备份
[单项选择]系统管理员需要数据库服务器保持1.2TB的存储量。服务器中包含六个250GB驱动器，可用作存储空间。如果将性能和容错视为重要因素，以下哪个RAID配置是最佳选择？（）
A. RAID 1跨3对驱动器（共3对）
B. RAID 5跨所有6个驱动器
C. RAID 10跨所有6个驱动器
D. RAID 0跨所有6个驱动器
[多项选择] An administrator is required to backup 250GB nightly utilizing a single LTO2 tape. The administrator reports that the tape drive is running out of available space before the job completes. Which of the following would allow the administrator to backup this data？ （）
A. Enable compression on the LTO2 drive
B. Utilize LTO3 tapes in the existing drive
C. Reduce the amount of data on the backup
D. Replace the LTO2 with LTO3 drive and tapes
E. Divide the data and back up half one night and half the next
[单项选择]An administrator is required to maintain maximum redundancy for 1TB of accounting files. Which of the following is the BEST option available to the administrator？（）
A. Create a RAID 5 array using eight 300GB disks.
B. Create a RAID 10 array using six 300GB disks.
C. Create a RAID 5 array using ten 300GB disks.
D. Create a RAID 10 array using eight 300GB disks.
[单项选择] You perform a backup using the following BACKUP command: RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE; Which statement is true of this command?（）
A. A different procedure is required to restore a database from compressed backups
B. The AS COMPRESSED clause of the BACKUP command provided by RMAN is used to create compressed backup sets and image copies.
C. Using this command to create backups minimizes the bandwidth consumed
D. Using this command to create backups improves the performance of the backup process
[单项选择]Which of the following backup methodologies is MOST time efficient for restoring data?（）
A. Incremental
B. Differential
C. Full
D. GFS
[多项选择]You have enabled backup optimization for the RMAN environment. Identify two criteria on which RMAN will skip the file, if it has already been backed up.（） (Choose two.)
A. The data file backup is done with multiple channels
B. The data files is in the read-write mode after being backed up in the read only mode
C. The backup was taken after the data files was taken offline-normal or is in the read only mode
D. The data file backup complies with the back retention policy and the backup duplexing feature
[单项选择]Which type of backup contains only the blocks that have changed since the last level 0 incremental backup?（）
A. a cumulative level 1 backup
B. a differential level 1 backup
C. a full backup
D. a whole backup
[单项选择] You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy: CONFIGURE RETENTION POLICY TO REDUNDANCY 3; Which statement is true?（）
A. The command fails because you cannot configure a redundancy-based retention policy when backup optimization is enabled
B. Backup optimization is performed, but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed up
C. Backup optimization is permanently disabled
D. Backup optimization is temporarily disabled because a redundancy-based retention policy is specified
[单项选择]A full backup is performed every Sunday and incremental backups are performed daily Monday through Saturday. How many tapes would be required to perform a full restore if a complete failure occurred on Thursday before the incremental backup?（）
A. 2
B. 3
C. 4
D. 5
[多项选择] You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database. Which two statements are true about this backup operation? （）(Choose two.)
A. Backup compression should be enabled
B. Parallelism for the channel should be set to 2
C. All the files must be backed up as backup sets
D. The backup may be stored either on disk or on media with media manager
[单项选择] You performed the RMAN database backup having a backupset key number 231 with the KEEP FOREVER option. After some days, you want to change the status of the database backup and you issued the following command: RMAN>CHANGE BACKUPSET 231 NOKEEP; What is the implication of this command?（）
A. The backup is deleted.
B. The backup is marked unavailable.
C. The backup overrides the backup retention policy.
D. the backup becomes eligible for deletion according to the existing retention policy
