更多“单选题Which of the following metrics provided by the iostat report is used to initially determine if a system is I/O bound?()A  % idleB  % sysC  % userD  % iowait”相关问题
  • 第1题:

    Which of the following metrics provided by the iostat report is used to initially determine if a system is I/O bound?()

    • A、 % idle
    • B、 % sys
    • C、 % user
    • D、 % iowait

    正确答案:D

  • 第2题:

    Which of the following phrases is TRUE regarding monitoring disk I/O with iostat?()

    • A、 The iostat can only be run as the root user
    • B、 There could be zero percent I/O wait and still be an I/O bottleneck
    • C、 Any I/O wait time displayed in output of "iostat" is an indication of severe I/O bottlenecks 
    • D、 Running "iostat" without any arguments/parameters is sufficient for resolving I/O bottlenecks

    正确答案:B

  • 第3题:

    In order to determine how efficiently an application is reading and writing data, which of the following utilities will report read and write sizes on disk I/O requests?()

    • A、 tprof
    • B、 iostat
    • C、 svmon
    • D、 filemon

    正确答案:D

  • 第4题:

    Which of the following commands should be used to report statistics on network protocols used by the system?()

    • A、 lsattr
    • B、 pstat
    • C、 netstat
    • D、 ifconfig

    正确答案:C

  • 第5题:

    An AIX system, which is running a database, is having performance issues with I/O writing.  The DBA has provided numbers for the HIGH and LOW watermarks for pending file writes, which will optimize the system for best performance.  To set these numbers, which of the following commands would be used?()

    • A、 perfmon -h 30 -l 25
    • B、 chdev
    • C、 no -o
    • D、 smit chgsys

    正确答案:D

  • 第6题:

    单选题
    A system administrator ran the iostat command because of system performance problems. The following iostat output is provided: Based on the output, which of the following is insufficient?()
    A

    CPU

    B

    Memory

    C

    Paging space

    D

    Disk capacityX


    正确答案: A
    解析: 暂无解析

  • 第7题:

    单选题
    Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem?()
    A

     filemon

    B

     istat

    C

     vmstat

    D

     iostat


    正确答案: A
    解析: 暂无解析

  • 第8题:

    单选题
    Which of the following commands should be used to observe the number of system calls per second? ()
    A

     sar 

    B

     iostat 

    C

     svmon 

    D

     vmstat


    正确答案: A
    解析: 暂无解析

  • 第9题:

    单选题
    In an iostat report, which of the following options best describes the value of % tm_act?()
    A

     The total CPU usage for this drive

    B

     The bandwidth utilization of the indicated drive

    C

     It can best be represented by the equation (%iowait - %ioidle)

    D

     It can best be represented by the equation (kilobytes read/kilobytes written) *100


    正确答案: A
    解析: 暂无解析

  • 第10题:

    单选题
    A user calls to report they are getting I/O errors on a file system. Which of the following tools should be used to isolate this problem?()
    A

    df

    B

    diagrpt

    C

    errmsg

    D

    errpt


    正确答案: B
    解析: 暂无解析

  • 第11题:

    单选题
    Which of the following metrics provided by the iostat report is used to initially determine if a system is I/O bound?()
    A

     % idle

    B

     % sys

    C

     % user

    D

     % iowait


    正确答案: D
    解析: 暂无解析

  • 第12题:

    单选题
    Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound?()
    A

     tin

    B

     tout

    C

     % idle

    D

     % tm_act


    正确答案: A
    解析: 暂无解析

  • 第13题:

    Which iostat %iowait minimum threshold indicates a possible I/O bottleneck?()

    • A、20% 
    • B、40% 
    • C、60% 
    • D、80%

    正确答案:A

  • 第14题:

    Which of the following commands can be used to determine if a disk drive is causing a bottleneck?()

    • A、 vmstat 
    • B、 fileplace 
    • C、 iostat 
    • D、 lvmstat

    正确答案:C

  • 第15题:

    Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem?()

    • A、 filemon
    • B、 istat
    • C、 vmstat
    • D、 iostat

    正确答案:D

  • 第16题:

    A user calls to report they are getting I/O errors on a file system. Which of the following tools should be used to isolate this problem?()

    • A、df
    • B、diagrpt
    • C、errmsg
    • D、errpt

    正确答案:D

  • 第17题:

    In an iostat report, which of the following options best describes the value of % iowait?()

    • A、 The amount of time taken to service an I/O interrupt
    • B、 The percentage of time CPU(s) are waiting for page ins
    • C、 The percentage of time the CPU9(s) are waiting on network
    • D、 The percentage of time the CPU(s) are waiting for outstanding disk I/O requests

    正确答案:D

  • 第18题:

    单选题
    In an iostat report, which of the following options best describes the value of % iowait?()
    A

     The amount of time taken to service an I/O interrupt

    B

     The percentage of time CPU(s) are waiting for page ins

    C

     The percentage of time the CPU9(s) are waiting on network

    D

     The percentage of time the CPU(s) are waiting for outstanding disk I/O requests


    正确答案: A
    解析: 暂无解析

  • 第19题:

    单选题
    Which of the following commands can be used to determine if a disk drive is causing a bottleneck?()
    A

     vmstat 

    B

     fileplace 

    C

     iostat 

    D

     lvmstat


    正确答案: C
    解析: 暂无解析

  • 第20题:

    单选题
    In order to determine how efficiently an application is reading and writing data, which of the following utilities will report read and write sizes on disk I/O requests?()
    A

     tprof

    B

     iostat

    C

     svmon

    D

     filemon


    正确答案: C
    解析: 暂无解析

  • 第21题:

    单选题
    Which of the following phrases is TRUE regarding monitoring disk I/O with iostat?()
    A

     The iostat can only be run as the root user

    B

     There could be zero percent I/O wait and still be an I/O bottleneck

    C

     Any I/O wait time displayed in output of iostat is an indication of severe I/O bottlenecks 

    D

     Running iostat without any arguments/parameters is sufficient for resolving I/O bottlenecks


    正确答案: C
    解析: 暂无解析

  • 第22题:

    单选题
    Which iostat %iowait minimum threshold indicates a possible I/O bottleneck?()
    A

    20% 

    B

    40% 

    C

    60% 

    D

    80%


    正确答案: B
    解析: 暂无解析

  • 第23题:

    单选题
    An AIX system, which is running a database, is having performance issues with I/O writing.  The DBA has provided numbers for the HIGH and LOW watermarks for pending file writes, which will optimize the system for best performance.  To set these numbers, which of the following commands would be used?()
    A

     perfmon -h 30 -l 25

    B

     chdev

    C

     no -o

    D

     smit chgsys


    正确答案: C
    解析: 暂无解析

  • 第24题:

    单选题
    Which of the following commands should be used to report statistics on network protocols used by the system?()
    A

     lsattr

    B

     pstat

    C

     netstat

    D

     ifconfig


    正确答案: D
    解析: 暂无解析