多选题Which two statements correctly describe the relation between a data file and the logical database structures（）AAn extent cannot spread across data files.BA segment cannot spread across data files.CA data file can belong to only one tablespace.DA data f

题目
多选题
Which two statements correctly describe the relation between a data file and the logical database structures（）
A

An extent cannot spread across data files.

B

A segment cannot spread across data files.

C

A data file can belong to only one tablespace.

D

A data file can have only one segment created in it.

E

A data block can spread across multiple data files as it can consist of multiple operating system （OS）blocks

相似考题

1.Which of the following statements is TRUE about mounting a file system?()A.A file system cannot be mounted on a directory containing data.B.Mounting a file system on a mount point containing data will delete the data.C.Mounting a file system on a amount point containing data will make the data temporarily inaccessible.D.A systems administrator must manually create an empty directory prior to mounting an AIX JFS.

2. A data file became corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）A、flash back all the tables in the data file， one by oneB、restore the data file to a new location and perform a media recoveryC、flash back the database; there is no need to restore the data fileD、restore the data file from the most recent backup and flash back the database

3.A PC on a network segment sends data to another PC on a different segment.Which of the following correctly describe the correct order of how this data will be encapsulated?（）A、Data, Frame, Packet, Segment, BitB、Data, Frame, Segment, Packet, BitC、Data, Packet, Frame, Segment, BitD、Data, Packet, Segment, Frame, BitE、Data, Segment, Frame, Packet, BitF、Data, Segment, Packet, Frame, Bit

4.Which two statements correctly describe the relation between a data file and the logical databasestructures（）A、An extent cannot spread across data files.B、A segment cannot spread across data files.C、A data file can belong to only one tablespace.D、A data file can have only one segment created in it.E、A data block can spread across multiple data files as it can consist of multiple operating system （OS） blocks.

参考答案和解析
正确答案： D,C
解析： 暂无解析
更多“多选题Which two statements correctly describe the relation between a data file and the logical database structures（）AAn extent cannot spread across data files.BA segment cannot spread across data files.CA data file can belong to only one tablespace.DA data f”相关问题

  • 第1题：

    Which two statements about bigfile tablespaces are true？ （）

    • A、The bigfile tablespace have only one data file.
    • B、The segment space management is automatic.
    • C、The extent management is dictionary managed.
    • D、The database can have only one bigfile tablespace.
    • E、The bigfile tablespace can be converted to a smallfile tablespace.

    正确答案:A,B

  • 第2题：

    Which statements are true about logical structures of the Oracle database（）

    • A、Each segment contains one or more extents.
    • B、Multiple tablespaces can share a single data file
    • C、A data block is the smallest unit of input/output （I/O） in data files.
    • D、It is possible to have tablespaces of different block sizes in a database.
    • E、Each data block in the database always corresponds to one operating system block

    正确答案:A,C,D

  • 第3题：

    A data file become corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）

    • A、 Flash back all the tables in the data file， one by one.
    • B、 Restore the data file to a new location and perform a media recovery.
    • C、 Flash back the database， there is no need to restore the data file.
    • D、 Restore the data file from the most recent backup and flash the database.

    正确答案:B

  • 第4题：

    Which two statements are true regarding transactions in an Oracle database（）

    • A、Multiple transactions can use the same undo segment.
    • B、A transaction is assigned an undo segment when it is started.
    • C、More than one transaction cannot share the same extent in the undo tablespace.
    • D、The transactions use system undo segment to store undo data if all the segments in the undo tablespaceare used.

    正确答案:A,B

  • 第5题：

    Which three statements are true regarding the data types in Oracle Database 10g/11g?（）

    • A、Only one LONG column can be used per table 
    • B、A TIMESTAMP data type column stores only time values with fractional seconds 
    • C、The BLOB data type column is used to store binary data in an operating system file 
    • D、The minimum column width that can be specified for a VARCHAR2 data type column is one 
    • E、The value for a CHAR data type column is blank-padded to the maximum defined column width

    正确答案:A,D,E

  • 第6题：

    Which three statements are true regarding the logical structure of the Oracle database？（）

    • A、Each segment contains one or more extents.
    • B、Multiple tablespaces can share single data file.
    • C、A data block is the smallest unit of I/O for data files.
    • D、It is possible to have tablespaces of different block sizes in a database.
    • E、Each data block in the database always corresponds to one OS block.

    正确答案:A,C,D

  • 第7题：

    多选题
    The database is running in NOARCHIVELOG mode. A data file is lost. Which two are valid options for recover？（）
    A

    Restore the data file and perform incomplete recovery.

    B

    Restore the data file and perform point-in-time recover.

    C

    Drop the tablespace and lose all data in the tablespace.

    D

    Restore the database and lose all data since the last backup.


    正确答案： D,B
    解析： 暂无解析

  • 第8题：

    多选题
    Which two statements are true regarding the Oracle Data Pump export and import operations（）
    A

    You cannot export data from a remote database.

    B

    You can rename tables during an import operation.

    C

    You can overwrite existing dump files during an export operation.

    D

    You can compress the data during export but not the metadata because it is not supported.


    正确答案： D,A
    解析： 暂无解析

  • 第9题：

    多选题
    Which four actions are possible during an Online Data file Move operation?（）
    A

    Creating and dropping tables in the data file being moved

    B

    Performing file shrink of the data file being moved

    C

    Querying tables in the data file being moved

    D

    Performing Block Media Recovery for a data block in the data file being moved

    E

    Flashing back the database

    F

    Executing DML statements on objects stored in the data file being moved


    正确答案： F,A
    解析： 暂无解析

  • 第10题：

    多选题
    Which two statements correctly describe the relation between a data file and the logical databasestructures（）
    A

    An extent cannot spread across data files.

    B

    A segment cannot spread across data files.

    C

    A data file can belong to only one tablespace.

    D

    A data file can have only one segment created in it.

    E

    A data block can spread across multiple data files as it can consist of multiple operating system （OS） blocks.


    正确答案： D,E
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements are true regarding the usage of the SQL*Loader utility（）
    A

    You can load data into multiple tables during the same load session.

    B

    You can load data from multiple files to a table during the same load session.

    C

    You cannot perform selective data loading based on the values available in the records.

    D

    You can use an export file generated by the EXPDP utility as an input data file to load the data.

    E

    You can load data only if the input file is available on the disk and tape but not in a named pipes.


    正确答案： B,A
    解析： 暂无解析

  • 第12题：

    多选题
    Which two statements about bigfile tablespaces are true？ （）
    A

    The bigfile tablespace have only one data file.

    B

    The segment space management is automatic.

    C

    The extent management is dictionary managed.

    D

    The database can have only one bigfile tablespace.

    E

    The bigfile tablespace can be converted to a smallfile tablespace.


    正确答案： D,B
    解析： 暂无解析

  • 第13题：

    The data file belonging to theSYSTEMtablespaceis corrupted and no backup of the file is available. How do you recover the data file？（）

    • A、The data file cannot be recovered.
    • B、The date file can be restored from theSYSTEMauto backup.
    • C、Take thetablespaceoffline，drop，kand re-create it.
    • D、Recovery Manager （RMAN） is used to recover the data file.
    • E、The ALTER DATABSE CREATE DATAFILE..commandis used to recover the data file.

    正确答案:A

  • 第14题：

    You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database.  Which method would you use to recover the data file？（）

    • A、Restore all the data files and open the database
    • B、Create the data file and performtablespacerecovery
    • C、No need to restore any file， just recover the database
    • D、Restore only the system data file and recover the database
    • E、Restore only lost date file and performtablespacerecovery

    正确答案:A

  • 第15题：

    Which two statements are true about simple views？（）

    • A、Views can be created as read only.
    • B、Views are data segments like tables.
    • C、Views can be created on the basis of more than one table.
    • D、Data manipulation language （DML） operations cannot be performed on views.

    正确答案:A,C

  • 第16题：

    Which two statements are true regarding the usage of the SQL*Loader utility（）

    • A、You can load data into multiple tables during the same load session.
    • B、You can load data from multiple files to a table during the same load session.
    • C、You cannot perform selective data loading based on the values available in the records.
    • D、You can use an export file generated by the EXPDP utility as an input data file to load the data.
    • E、You can load data only if the input file is available on the disk and tape but not in a named pipes.

    正确答案:A,B

  • 第17题：

    View this parameter setting in your database：   DB_CREATE_FILE_DEST=’D:// /oracle/product/10.2.0/oradata/oracle’  You created a tablespace by using this command：   CREATE TABLESPACE USERS；  Which two statements are true about the USERS tablespace？（）

    • A、The tablespace has two data files.
    • B、An error is reported and tablespace creation fails.
    • C、Data files are created with names generated by the instance.
    • D、The tablespace can be extended without specifying the data file.
    • E、Data files belonging to the USERS tablespace cannot be renamed.

    正确答案:C,D

  • 第18题：

    Which three statements are true about logical structures of the Oracle database（）

    • A、Each segment contains one or more extents.
    • B、Multiple tablespaces can share a single data file.
    • C、A data block is the smallest unit of input/output （I/O） in data files.
    • D、It is possible to have tablespaces of different block sizes in a database.
    • E、Each data block in the database always corresponds to one operating system block.

    正确答案:A,C,D

  • 第19题：

    多选题
    Which three statements are true regarding the logical structure of the Oracle database？（）
    A

    Each segment contains one or more extents.

    B

    Multiple tablespaces can share single data file.

    C

    A data block is the smallest unit of I/O for data files.

    D

    It is possible to have tablespaces of different block sizes in a database.

    E

    Each data block in the database always corresponds to one OS block.


    正确答案： A,B
    解析： 暂无解析

  • 第20题：

    多选题
    Which three statements are true about logical structures of the Oracle database（）
    A

    Each segment contains one or more extents.

    B

    Multiple tablespaces can share a single data file.

    C

    A data block is the smallest unit of input/output （I/O） in data files.

    D

    It is possible to have tablespaces of different block sizes in a database.

    E

    Each data block in the database always corresponds to one operating system block.


    正确答案： A,C,D
    解析： A答案：每个段包含一个或多个区，正确。 
    B答案：一个数据文件只能属于一个表空间，故错误。 
    C答案：Oracle data block是最小的I/O单位，正确 
    D答案：可以是不同的块大小，需要指名非标准块的位置。 
    E答案：每个数据库里面的数据库对应一个或多个操作系统块，故E错误。

  • 第21题：

    多选题
    Which two statements are true regarding transactions in an Oracle database（）
    A

    Multiple transactions can use the same undo segment.

    B

    A transaction is assigned an undo segment when it is started.

    C

    More than one transaction cannot share the same extent in the undo tablespace.

    D

    The transactions use system undo segment to store undo data if all the segments in the undo tablespaceare used.


    正确答案： B,D
    解析： 暂无解析

  • 第22题：

    单选题
    A data file become corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）
    A

     Flash back all the tables in the data file， one by one.

    B

     Restore the data file to a new location and perform a media recovery.

    C

     Flash back the database， there is no need to restore the data file.

    D

     Restore the data file from the most recent backup and flash the database.


    正确答案： A
    解析： 暂无解析

  • 第23题：

    多选题
    Which statements are true about logical structures of the Oracle database（）
    A

    Each segment contains one or more extents.

    B

    Multiple tablespaces can share a single data file

    C

    A data block is the smallest unit of input/output （I/O） in data files.

    D

    It is possible to have tablespaces of different block sizes in a database.

    E

    Each data block in the database always corresponds to one operating system block


    正确答案： A,B
    解析： 暂无解析

  • 第24题：

    多选题
    Which two statements correctly describe the relation between a data file and the logical database structures（）
    A

    An extent cannot spread across data files.

    B

    A segment cannot spread across data files.

    C

    A data file can belong to only one tablespace.

    D

    A data file can have only one segment created in it.

    E

    A data block can spread across multiple data files as it can consist of multiple operating system （OS）blocks


    正确答案： B,C
    解析： 暂无解析

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