更多“HDFS 默认 Block Size()A32MBB64MBC128MB”相关问题
  • 第1题:

    dfs.block.size-数据块大小,默认是?()

    • A、16M
    • B、32M
    • C、64M
    • D、128M

    正确答案:C

  • 第2题:

    HDFS中的block默认保存()份.

    • A、3份
    • B、2份
    • C、1份
    • D、不确定

    正确答案:A

  • 第3题:

    A System p administrator is attempting to restore some files from a backup tape. The restore failed. The system administrator suspects the block size of the tape drive is incorrect.  Which of the following commands can be used to determine the block size of the backup tape ()

    • A、dd
    • B、tar
    • C、cpio
    • D、restore

    正确答案:A

  • 第4题:

    A specialist is monitoring performance on a server. The data is on another partition within the same array as the OS. The following information is available:       (1)The average record written to disk is 16KB       (2)The I/O block size is 2KB   (3)The stripe size on the RAID array is 16KB  Which of the following will improve performance without rebuilding the operating system?()

    • A、Change the I/O block size to match the RAID Stripe size.
    • B、Change the RAID stripe size to match the I/O block size.
    • C、Change the record size of the database to match the RAID stripe size.
    • D、Change the record size of the database to match the I/O transfer rate.

    正确答案:A

  • 第5题:

    The database has the data block size set to 8 KB. You need to import a tablespace with a 4 KB block size into the database. Which additional memory parameter(s) should be configured to perform a transportable tablespace import?()

    • A、 DB_4K_CACHE_SIZE only
    • B、 DB_8K_CACHE_SIZE only
    • C、 DB_BLOCK_SIZE and DB_4K_CACHE_SIZE
    • D、 DB_BLOCK_SIZE and DB_8K_CACHE_SIZE
    • E、 SGA_TARGET and DB_4K_CACHE_SIZE
    • F、 DB_CACHE_SIZE only

    正确答案:A

  • 第6题:

    You have executed this command to change the size of the database buffer cache: SQL> ALTER SYSTEM SET DB_CACHE_SIZE=2516582; System altered.  To verify the change in size, you executed this command: SQL> SHOW PARAMETER DB_CACHE_SIZE NAME TYPE VALUE  ------------------- ----------- ------------------  db_cache_size big integer 4194304  (4M)  Why is the value set to 4194304 and not to 2516582()

    • A、because 4194304 is the granule size
    • B、because 4194304 is the standard block size
    • C、because 4194304 is the largest nonstandard block size defined in the database
    • D、because 4194304 is the total size of data already available in the database buffer cache

    正确答案:A

  • 第7题:

    关于Block和Split两个概念,下面说法错误的是()

    • A、Block是HDFS中最小的数据存储单位
    • B、Split是MapReduce中最小的计算单元
    • C、Block与Split是一一对应关系
    • D、Block和Split之间对应关系是任意的,可由用户控制

    正确答案:A,D

  • 第8题:

    单选题
    View the Exhibit. You want to create a tablespace to contain objects with block size 16 KB. But while configuring the storage you find that the block size that you can provide is only 8 KB.  Which configuration couldhave enabled the block selection of 16 KB()
    A

    Choosing the extent allocation type to uniform

    B

    Choosing the Segment Space Management option to manual

    C

    Setting autoextension on for the data file mentioned for the tablespace

    D

    Setting the DB_16K_CACHE_SIZE parameter for the database instance to a nonzero value


    正确答案: D
    解析: 暂无解析

  • 第9题:

    单选题
    HDFS中的block默认保存()份.
    A

    3份

    B

    2份

    C

    1份

    D

    不确定


    正确答案: C
    解析: 暂无解析

  • 第10题:

    单选题
    The database has the data block size set to 8 KB. You need to import a tablespace with a 4 KB block size into the database. Which additional memory parameter(s) should be configured to perform a transportable tablespace import?()
    A

     DB_4K_CACHE_SIZE only

    B

     DB_8K_CACHE_SIZE only

    C

     DB_BLOCK_SIZE and DB_4K_CACHE_SIZE

    D

     DB_BLOCK_SIZE and DB_8K_CACHE_SIZE

    E

     SGA_TARGET and DB_4K_CACHE_SIZE

    F

     DB_CACHE_SIZE only


    正确答案: C
    解析: 暂无解析

  • 第11题:

    ( 难度:中等)Hdfs默认Block size
    A.16MB
    B.32MB
    C.64MB
    D.128MB

    答案:C

  • 第12题:

    (难度:中等)因为hdfs上的文件会按block size进行拆分,所以Hbase的region大小不需要管理,1张表只设置1个region即可。

    答案:(no)

  • 第13题:

    spark进行数据切分的时候,划分完成的partition个数和hdfs中block个数一致


    正确答案:正确

  • 第14题:

    APG网元计费出现拥塞的时候,一般那几个SIZE会迅速增大?()

    • A、SAE=500,BLOCK=CHOF
    • B、SAE=604,BLOCK=CHOF
    • C、SAE=500,BLOCK=CHOP
    • D、SAE=604,BLOCK=CHOP

    正确答案:C,D

  • 第15题:

    A system administrator is attempting to restore some files from a backup tape. The restore failed. The system administrator suspects the block size of the tape drive is incorrect. Which of the following commands can be used to determine the block size of the backup tape?()

    • A、dd
    • B、tar
    • C、cpio
    • D、restore

    正确答案:A

  • 第16题:

    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.

    正确答案:A

  • 第17题:

    Your database block size is 4 KB. In this database, you are required to create a tablespace with a block size of 8 KB. Which is the prerequisite for creating this tablespace?()

    • A、 The parameter DB_CACHE_SIZE must be a multiple of 8.
    • B、 The value of the parameter SGA_MAX_SIZE must be increased.
    • C、 The tablespace must be created with a uniform extent size of 8 KB
    • D、 The parameter DB_8K_CACHE_SIZE must be defined in the parameter file.

    正确答案:D

  • 第18题:

    HDFS1.0默认Block Size大小是多少()。

    • A、32MB
    • B、64MB
    • C、128MB
    • D、256MB

    正确答案:B

  • 第19题:

    单选题
    FusionInsight HD系统中HDFS默认的Block Size是多少?()
    A

    32MB

    B

    64MB

    C

    128MB

    D

    256MB


    正确答案: C
    解析: A 32MB B 64MB C 128MB D 256MB

  • 第20题:

    单选题
    You have executed this command to change the size of the database buffer cache: SQL> ALTER SYSTEM SET DB_CACHE_SIZE=2516582; System altered. To verify the change in size, you executed this command:SQL> SHOW PARAMETER DB_CACHE_SIZENAME TYPE VALUE ------------------- ----------- ------------------ db_cache_size big integer 4194304 Why is the value set to 4194304 and not to 2516582()
    A

    Because 4194304 is the granule size

    B

    Because 4194304 is the standard block size

    C

    Because 4194304 is the largest nonstandard block size defined in the database

    D

    Because 4194304 is the total size of data already available in the database buffer cache


    正确答案: C
    解析: 暂无解析

  • 第21题:

    单选题
    FusionInsight HD系统中HDFS的Block默认保存几份?()
    A

    3份

    B

    2份

    C

    1份

    D

    不确定


    正确答案: A
    解析: 暂无解析

  • 第22题:

    单选题
    Your database block size is 4 KB. In this database, you are required to create a tablespace with a block size of 8 KB. Which is the prerequisite for creating this tablespace?()
    A

     The parameter DB_CACHE_SIZE must be a multiple of 8.

    B

     The value of the parameter SGA_MAX_SIZE must be increased.

    C

     The tablespace must be created with a uniform extent size of 8 KB

    D

     The parameter DB_8K_CACHE_SIZE must be defined in the parameter file.


    正确答案: B
    解析: 暂无解析

  • 第23题:

    ( 难度:中等)hdfs中block默认备份数量是
    A.1份
    B.2份
    C.3份
    D.视数据量而定

    答案:C