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单选题You want to use RMAN to create compressed backups.Which statement is true about the compression algorithms that RMAN can use?（）A The BZIP2 compression algorithm consumes more CPU resources than the ZLIB compression algorithm.B The ZLIB compression algo

题目
单选题
You want to use RMAN to create compressed backups.Which statement is true about the compression algorithms that RMAN can use?（）
A

The BZIP2 compression algorithm consumes more CPU resources than the ZLIB compression algorithm.

B

The ZLIB compression algorithm consumes more CPU resources than the BZIP2 compression algorithm.

C

The ZLIB compression algorithm provides maximum compression and produces smaller backups than the BZIP2 compression algorithm.

D

Only the BZIP2 compression algorithm can be used to make compressed backups to disk.

相似考题

1.You are tuning RMAN to optimize performance.You want tape I／O to be asynchronous when you perform tape backups. Which action should you take?()A. Set the BACKUP_TAPE_IO_SLAVES parameter to FALSEB.Set the BACKUP_TAPE_IO_SLAVES parameter to TRUEC. Use compression when performing tape backupsD. Configure multiple SBT channels

2.Which statement is true about compression subnets?()A. Compression subnets are turned on by default.B. Compression subnets advertise remote routes.C. Compression subnets are usually LAN-side subnets.D. Compression subnets are usually WAN-side subnets.

3.Which statement is true about compression subnets?（）A、Compression subnets are turned on by default.B、Compression subnets advertise remote routes.C、Compression subnets are usually LAN-side subnets.D、Compression subnets are usually WAN-side subnets.

4.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 enabledB. Parallelism for the channel should be set to 2C. All the files must be backed up as backup setsD. The backup may be stored either on disk or on media with media manager

参考答案和解析
正确答案： D
解析： 暂无解析
更多“单选题You want to use RMAN to create compressed backups.Which statement is true about the compression algorithms that RMAN can use?（）A The BZIP2 compression algorithm consumes more CPU resources than the ZLIB compression algorithm.B The ZLIB compression algo”相关问题

  • 第1题：

    Which two statements regarding compressed backups in Recovery Manager （RMAN） are true？（）

    • A、 Backup compression is disabled by default.
    • B、 Backup compression can be used with both backup sets and image copies.
    • C、 Backup compression cannot be enabled using the CONFIGURE command.
    • D、 Backup compression works only if the COMPATIBILITY parameter is set to 9.0.0.0 or higher.
    • E、 Backup compression applies to only backup sets.
    • F、 Backup compression applies to only image copies.

    正确答案:A,E

  • 第2题：

    You want to use RMAN to create compressed backups.Which statement is true about the compression algorithms that RMAN can use?（）

    • A、The BZIP2 compression algorithm consumes more CPU resources than the ZLIB compression algorithm.
    • B、The ZLIB compression algorithm consumes more CPU resources than the BZIP2 compression algorithm.
    • C、The ZLIB compression algorithm provides maximum compression and produces smaller backups than the BZIP2 compression algorithm.
    • D、Only the BZIP2 compression algorithm can be used to make compressed backups to disk.

    正确答案:A

  • 第3题：

    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?（）

    • 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

    正确答案:D,E

  • 第4题：

    You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups.Which action should you take?（）

    • A、Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE
    • B、Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE
    • C、Use compression when performing tape backups
    • D、Configure multiple SBT channels

    正确答案:B

  • 第5题：

    Which statement about the enabling of table compression in Oracle Database 11g is true?（）

    • A、Compression can be enabled at the table, tablespace, or partition level for direct loads only.
    • B、Compression can be enabled only at the table level for both direct loads and conventional DML.
    • C、Compression can be enabled at the table, tablespace, or partition level for conventional DML only.
    • D、Compression can be enabled at the table, tablespace, or partition level for both direct loads and conventional DML.

    正确答案:D

  • 第6题：

    You administer a SQL Server 2008 instance. You deploy a new database named Engineering. The Engineering database manages large documents that will be revised occasionally. You need to design a table structure that allows fast read access. You also need to minimize storage space requirements.  Which two actions should you perform?（）

    • A、Use NTFS file system compression on the volume.
    • B、Use row-level compression on the document table.
    • C、Use varbinary(MAX) data type with FILESTREAM storage.
    • D、Enable row-level compression on all columns that use the vardecimal() data type.

    正确答案:A,C

  • 第7题：

    You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a n On-Line Analytical Processing （OLAP） database named in the instance. The database contains a dimension table named Clients. Ever hour backup of data of the Clients table is performed. But the Clinets table contains redundant data. You must keep the disk space used to store the Clients table.  In the options below， which compression technology should you use？（）

    • A、You should use row compression 
    • B、You should use page compression 
    • C、You should use backup compression 
    • D、You should use windows NTFS file system compression

    正确答案:B

  • 第8题：

    单选题
    Which statement is true regarding the remote route table of a local WX device?（）
    A

    Remote routes are the compression subnets advertised by remote WX devices.

    B

    Remote routes include routes for remote hosts or subnets advertised by a WAN router.

    C

    Remote routes are the routes advertised by remote routers that are more than two hops away.

    D

    Remote routes are the compression subnets advertised by the local WX device to the remote WX devices.


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    Which statement about the enabling of table compression in Oracle Database 11g is true？（）
    A

     Compression can be enabled at the table， tablespace， or partition level for direct loads only.

    B

     Compression can be enabled only at the table level for both direct loads and conventional DML.

    C

     Compression can be enabled at the table， tablespace， or partition level for conventional DML only.

    D

     Compression can be enabled at the table， tablespace， or partition level for both direct loads and conventional DML.


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups.Which action should you take?（）
    A

    Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE

    B

    Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE

    C

    Use compression when performing tape backups

    D

    Configure multiple SBT channels


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    A shoot-out has erupted between your MS development teams using .NET and your Linux development teams using Java.  Knowing that your database is in danger，which command would you use to back up your NOARCHIVELOG mode database using RMAN with compression？（）
    A

     backup database all

    B

     backup compressed database

    C

     backup as compressed backupset database

    D

     backup as compressed backup database plus archivelog all

    E

     backup as compressed backupset database plus compress archivelog all


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    You want to use RMAN to create compressed backups.  Which statement is true about the compression algorithms that RMAN can use？（）
    A

     The BZIP2 compression algorithm consumes more CPU resources than the ZLIB compression algorithm.

    B

     The ZLIB compression algorithm consumes more CPU resources than the BZIP2 compression algorithm.

    C

     The ZLIB compression algorithm provides maximum compression and produces smaller backups than the BZIP2 compression algorithm.

    D

     Only the BZIP2 compression algorithm can be used to make compressed backups to disk.


    正确答案： A
    解析： 暂无解析

  • 第13题：

    You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups. Which action should you take？（）

    • A、 Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE
    • B、 Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE
    • C、 Use compression when performing tape backups
    • D、 Configure multiple SBT channels

    正确答案:B

  • 第14题：

    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

    正确答案:C,D

  • 第15题：

    You want to use RMAN to create compressed backups.  Which statement is true about the compression algorithms that RMAN can use？（）

    • A、 The BZIP2 compression algorithm consumes more CPU resources than the ZLIB compression algorithm.
    • B、 The ZLIB compression algorithm consumes more CPU resources than the BZIP2 compression algorithm.
    • C、 The ZLIB compression algorithm provides maximum compression and produces smaller backups than the BZIP2 compression algorithm.
    • D、 Only the BZIP2 compression algorithm can be used to make compressed backups to disk.

    正确答案:A

  • 第16题：

    A shoot-out has erupted between your MS development teams using .NET and your Linux development teams using Java.  Knowing that your database is in danger，which command would you use to back up your NOARCHIVELOG mode database using RMAN with compression？（）

    • A、 backup database all
    • B、 backup compressed database
    • C、 backup as compressed backupset database
    • D、 backup as compressed backup database plus archivelog all
    • E、 backup as compressed backupset database plus compress archivelog all

    正确答案:C

  • 第17题：

    You are using Recovery Manager (RMAN) to perform backups. In which three situations would you perform a compressed backup?（）

    • A、You are backing up to tape and your tape device performs its own compression.
    • B、You are making image copies, and you have not enabled tablespace compression.
    • C、You are using disk-based backups and disk space in your Flash Recovery Area, or other disk-based backup destinations are limited.
    • D、You are performing your backups to some device over a network where reduced network bandwidth is more important than CPU usage.
    • E、You are using some archival backup media, such as CD or DVD, where reducing backup sizes saves  media costs and archival storage.

    正确答案:C,D,E

  • 第18题：

    You have some compressed bitmap files in a directory of your Windows 2000 Professional computer. The file compression has reduced their size from 2 MB to 1 MB. You attempt to copy them to a floppy disk, but an error reports that the destination drive is full.  How can you copy the bitmap files to a 1.44 MB floppy disk? （）

    • A、Use a third-party file compression utility to create a compressed archive containing the bitmap files. Copy the compressed archive to the floppy disk.
    • B、Create an empty compressed folder on the floppy disk， and copy the files to the new folder.
    • C、Format the floppy disk as NTFS， and restart the copy operation.
    • D、Confirm that the cluster size on the NTFS volume is greater than 32k.

    正确答案:A

  • 第19题：

    单选题
    You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups. Which action should you take？（）
    A

     Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE

    B

     Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE

    C

     Use compression when performing tape backups

    D

     Configure multiple SBT channels


    正确答案： C
    解析： 暂无解析

  • 第20题：

    多选题
    You are using Recovery Manager (RMAN) to perform backups. In which three situations would you perform a compressed backup?（）
    A

    You are backing up to tape and your tape device performs its own compression.

    B

    You are making image copies, and you have not enabled tablespace compression.

    C

    You are using disk-based backups and disk space in your Flash Recovery Area, or other disk-based backup destinations are limited.

    D

    You are performing your backups to some device over a network where reduced network bandwidth is more important than CPU usage.

    E

    You are using some archival backup media, such as CD or DVD, where reducing backup sizes saves  media costs and archival storage.


    正确答案： C,A
    解析： 暂无解析

  • 第21题：

    单选题
    Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?（）
    A

    Higher compression ratios create higher temperature

    B

    Higher temperatures create higher compression ratios

    C

    low temperatures create higher compression ratios

    D

    Higher compression ratios create low temperatures


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    You have some compressed bitmap files in a directory of your Windows 2000 Professional computer. The file compression has reduced their size from 2 MB to 1 MB. You attempt to copy them to a floppy disk, but an error reports that the destination drive is full.  How can you copy the bitmap files to a 1.44 MB floppy disk? （）
    A

    Use a third-party file compression utility to create a compressed archive containing the bitmap files. Copy the compressed archive to the floppy disk.

    B

    Create an empty compressed folder on the floppy disk， and copy the files to the new folder.

    C

    Format the floppy disk as NTFS， and restart the copy operation.

    D

    Confirm that the cluster size on the NTFS volume is greater than 32k.


    正确答案： D
    解析： You should compress the files with the help of a third-party file compression utility.

  • 第23题：

    单选题
    You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a n On-Line Analytical Processing （OLAP） database named in the instance. The database contains a dimension table named Clients. Ever hour backup of data of the Clients table is performed. But the Clinets table contains redundant data. You must keep the disk space used to store the Clients table.  In the options below， which compression technology should you use？（）
    A

    You should use row compression 

    B

    You should use page compression 

    C

    You should use backup compression 

    D

    You should use windows NTFS file system compression


    正确答案： B
    解析： 暂无解析

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