niusouti.com

单选题Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）AThe iostat can only be run as the root userBThere could be zero percent I/O wait and still be an I/O bottleneckCAny I/O wait time displayed in output of iostat is an in

题目
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

相似考题

1.View the exhibit and examine the output.Which statement can be an inference from the output?()A. The FRA disk group has an asynchronous I/O bottleneckB. The least number of I/Os are performed on the last data file in the listC. The number of times that the backup or restore process directed the OS to wait until an I/O was complete is the highest for the last data file in the listD. The number of times that the backup or restore process made an OS call to poll for I/O completion in Nonblocking mode is the least for the FRA disk group

2.Which of the following commands should be used to monitor disk utilization during the time a system is experiencing a disk I/O performance problem？（）A、 istatB、 topasC、 vmstatD、 filemon

3.In an iostat report， which of the following options best describes the value of % idle？（）A、 A representation of the equation （tps/kbps）*100B、 The percentage of time the disks are idle with no activityC、 The percentage of time the disks are idle with no outstanding CPU requestsD、 The percentage of time the CPU is idle with no outstanding disk I/O requests

4.Which three statements correctly describe the features of the I／O calibration process?()A. Only one I/O calibration process can run at a time.B. It automates the resource allocation for the Automated Maintenance Tasks.C. It improves the performance of the performance-critical sessions while running.D. It can be used to estimate the maximum number of I/Os and maximum latency time for the system.E. The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE.

更多“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 userB  There could be zero percent I/O wait and still be an I/O bottleneckC  Any I/O wait time displayed in output of iostat is”相关问题

  • 第1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:D

  • 第2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3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4题：

    Which system resources does WLM have the capability to control?（）

    • A、 CPU, Memory and Network I/O 
    • B、 CPU, Memory and Disk I/O 
    • C、 CPU and Memory 
    • D、 CPU and Disk I/O

    正确答案:B

  • 第5题：

    Which statement can be an inference from the output?（）

    • A、The FRA disk group has an asynchronous I/O bottleneck
    • B、The least number of I/Os are performed on the last data file in the list
    • C、The number of times that the backup or restore process directed the OS to wait until an I/O was complete is the highest for the last data file in the list
    • D、The number of times that the backup or restore process made an OS call to poll for I/O completion in Nonblocking mode is the least for the FRA disk group

    正确答案:A

  • 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
    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8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9题：

    单选题
    When the length of the run queues， process or thread dispatches interrupts， and lock contention metrics and statistics are analyzed for performance， which of the following resources is being analyzed？（）
    A

     CPU

    B

     Memory

    C

     Disk I/O

    D

     Network I/O


    正确答案： C
    解析： 暂无解析

  • 第10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11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12题：

    多选题
    Which three statements correctly describe the features of the I/O calibration process？（）
    A

    Only one I/O calibration process can run at a time

    B

    It automates the resource allocation for the Automated Maintenance Tasks

    C

    It improves the performance of the performance-critical sessions while running

    D

    It can be used to estimate the maximum number of I/Os and maximum latency time for the system

    E

    The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE


    正确答案： B,D
    解析： 暂无解析

  • 第13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14题：

    When the length of the run queues， process or thread dispatches interrupts， and lock contention metrics and statistics are analyzed for performance， which of the following resources is being analyzed？（）

    • A、 CPU
    • B、 Memory
    • C、 Disk I/O
    • D、 Network I/O

    正确答案:A

  • 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：

    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17题：

    Which three statements correctly describe the features of the I/O calibration process？（）

    • A、 Only one I/O calibration process can run at a time
    • B、 It automates the resource allocation for the Automated Maintenance Tasks
    • C、 It improves the performance of the performance-critical sessions while running
    • D、 It can be used to estimate the maximum number of I/Os and maximum latency time for the system
    • E、 The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE

    正确答案:A,D,E

  • 第18题：

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

     istat

    B

     topas

    C

     vmstat

    D

     filemon


    正确答案： B
    解析： 暂无解析

  • 第19题：

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

     A representation of the equation （tps/kbps）*100

    B

     The percentage of time the disks are idle with no activity

    C

     The percentage of time the disks are idle with no outstanding CPU requests

    D

     The percentage of time the CPU is idle with no outstanding disk I/O requests


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    Which system resources does WLM have the capability to control?（）
    A

     CPU, Memory and Network I/O 

    B

     CPU, Memory and Disk I/O 

    C

     CPU and Memory 

    D

     CPU and Disk I/O


    正确答案： C
    解析： 暂无解析

  • 第21题：

    多选题
    Which three statements correctly describe the features of the I/O calibration process?（）
    A

    Only one I/O calibration process can run at a time.

    B

    It automates the resource allocation for the Automated Maintenance Tasks.

    C

    It improves the performance of the performance-critical sessions while running.

    D

    It can be used to estimate the maximum number of I/Os and maximum latency time for the system.

    E

    The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE.


    正确答案： B,C
    解析： 暂无解析

  • 第22题：

    单选题
    Which statement can be an inference from the output?（）
    A

    The FRA disk group has an asynchronous I/O bottleneck

    B

    The least number of I/Os are performed on the last data file in the list

    C

    The number of times that the backup or restore process directed the OS to wait until an I/O was complete is the highest for the last data file in the list

    D

    The number of times that the backup or restore process made an OS call to poll for I/O completion in Nonblocking mode is the least for the FRA disk group


    正确答案： C
    解析： 暂无解析

  • 第23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24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

相关内容