单选题While a user is compiling a C program, "vmstat 120 10" is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit, which of the following conclusions is most appropriate to draw?（）AThere is a file I/O bottl

题目
单选题
While a user is compiling a C program, "vmstat 120 10" is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit, which of the following conclusions is most appropriate to draw?（）
A

 There is a file I/O bottleneck.

B

 There are too many open files. 

C

 There appears to be a buffer shortage. 

D

 There is a paging space I/O bottleneck. 

相似考题

1.Using output from "vmstat 2 8," which of the following options is most appropriate to consider when determining if a system is experiencing memory thrashing?（）A、 cy != 1 B、 re != 0 C、 po/fr > 1/6 D、 fr/po > 1/6

2.After running the vmstat command， which of the following would most likely cause the value in the blocked column to be unusually high？（）A、 Kernel threadB、 Too many usersC、 Memory shortageD、 Network contention

3. An administrator wants to run topas as their own userid but gets the following error when trying. user1>$ topas topas. Unable to initialize Spmi interface Spmi. Error 13 opening file /etc/Spmi_shm_hook. Which of the following is the most likely cause of the error?（）A、The /dev/kmem file must be at 777 permissions.B、The administrator is using other shell than ksh.C、The number of pipe handles at /etc/tunables is too low.D、The topas command must be run with root at least once previously.

4.Performance monitoring of a poorly performing system indicates a high level of CPU usage. Which tool can be used to help identify which processes are using excessive CPU resources？（）A、sarB、topasC、iostatD、vmstat

更多“单选题While a user is compiling a C program, "vmstat 120 10" is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit, which of the following conclusions is most appropriate to draw?（）A  There is a file I/O bo”相关问题

  • 第1题：

    While monitoring a system using vmstat， which of the following options most likely indicates that the system is CPU bound？（）

    • A、 r is greater than 40
    • B、 id is greater than 50
    • C、 sum of id and wa equals 50
    • D、 sum of us and sy equals 100

    正确答案:D

  • 第2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3题：

    A system administrator has a server that is performing poorly. The vmstat command identifies that high CPU usage is the problem. Which of the following commands can be used to identify the eight most active processes running on the server？（）

    • A、ps -ef -t8
    • B、sar -u -p 8
    • C、vmstat -t 8
    • D、topas -p8 -n0 -d0

    正确答案:D

  • 第4题：

    Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）

    • A、 foo ； lsps -s
    • B、 tprof -kx ； foo
    • C、 iostat ； foo ； iostat
    • D、 vmstat -s ； foo ； vmstat s

    正确答案:D

  • 第5题：

    What will be the result of attempting to compile and run the following program？（）   public class Q28fd {   public static void main（String args[]） {   int counter = 0；   l1：   for （int i=10； i<0； i--） {   l2：  int j = 0；   while （j < 10） {   if （j > i） break l2；   if （i == j） {   counter++；   continue l1；   }   }   counter--；   }   System.out.println（counter）；  }   }   

    • A、The program will fail to compile.
    • B、The program will not terminate normally.
    • C、The program will write 10 to the standard output.
    • D、The program will write 0 to the standard output.
    • E、The program will write 9 to the standard output.

    正确答案:A

  • 第6题：

    单选题
    Using output from "vmstat 2 8," which of the following options is most appropriate to consider when determining if a system is experiencing memory thrashing?（）
    A

     cy != 1 

    B

     re != 0 

    C

     po/fr > 1/6 

    D

     fr/po > 1/6


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    While monitoring a system using vmstat， which of the following options most likely indicates that the system is CPU bound？（）
    A

     r is greater than 40

    B

     id is greater than 50

    C

     sum of id and wa equals 50

    D

     sum of us and sy equals 100


    正确答案： D
    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
    A user reports their system is displaying an error message ‘NTLDR is missing’. Which of the following is the MOST likely cause for this error?（）
    A

    BOOT.INI file is configured incorrectly

    B

    Corrupt MBR

    C

    Boot sector virus

    D

    System file is missing components


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    A user is reporting a loud grinding sound when the machine is powered on. The machine loadsinto windows and the user does not notice any performance issues. Which of the following is the MOST likely cause of the noise?（）
    A

    Powersupplyfailure

    B

    BadHD

    C

    Badfan

    D

    FaultyCD-Rom


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    A user tries to telnet into a system that was previously accessible but gets the following error:  "telnetd: 0403-031 fork function failed, there is not enough memory available."  netstat -m shows that 0 mbuf errors have occurred.  Which of the following conclusions is most appropriate to draw about this error?（）
    A

     The paging space is full.

    B

     A particular filesystem is full and cannot be allocated to memory.

    C

     A problem exists with telnetd. 

    D

     The inetd daemon went down. 


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Which of the following performance tools can be used to determine if a system is thrashing？（）
    A

     svmon and tprof

    B

     vmtune and schedtune

    C

     ps and schedtune

    D

     vmstat and topas


    正确答案： C
    解析： 暂无解析

  • 第13题：

    When monitoring a system using vmstat with an interval， which of the following conclusions should be drawn about the metrics under page pi and page po？（）

    • A、 The values do not include working storage.
    • B、 The values do not include persistent storage.
    • C、 The values include both persistent and working storage.
    • D、 The values are not working or persistent storage.

    正确答案:B

  • 第14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15题：

    A system administrator is monitoring a system that has recently shown a decrease in performance.The administrator suspects that the system may be low on memory and may be paging excessively.Which of the following commands is best to identify a possible paging problem？（）

    • A、iostat
    • B、netstat
    • C、ps
    • D、vmstat

    正确答案:D

  • 第16题：

    Which of the following performance tools can be used to determine if a system is thrashing？（）

    • A、 svmon and tprof
    • B、 vmtune and schedtune
    • C、 ps and schedtune
    • D、 vmstat and topas

    正确答案:D

  • 第17题：

    单选题
    When monitoring a system using vmstat with an interval， which of the following conclusions should be drawn about the metrics under page pi and page po？（）
    A

     The values do not include working storage.

    B

     The values do not include persistent storage.

    C

     The values include both persistent and working storage.

    D

     The values are not working or persistent storage.


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    After running the vmstat command， which of the following would most likely cause the value in the blocked column to be unusually high？（）
    A

     Kernel thread

    B

     Too many users

    C

     Memory shortage

    D

     Network contention


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    To examine the Exhibit, press the Exhibit button. A user is compiling a C program.  A performance problem occurs and "vmstat 120 10" is run to determine the cause.  The vmstat output is provided in the exhibit.  Which of the following commands should be run to obtain more information about the problem?（）
    A

     lsps 

    B

     tprof 

    C

     iostat 

    D

     vmtune


    正确答案： C
    解析： 暂无解析

  • 第20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21题：

    单选题
    While a user is compiling a C program, "vmstat 120 10" is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit, which of the following conclusions is most appropriate to draw?（）
    A

     There is a file I/O bottleneck.

    B

     There are too many open files. 

    C

     There appears to be a buffer shortage. 

    D

     There is a paging space I/O bottleneck. 


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    An administrator wants to run topas as their own userid but gets the following error when trying. user1>$ topas topas. Unable to initialize Spmi interface Spmi. Error 13 opening file /etc/Spmi_shm_hook. Which of the following is the most likely cause of the error?（）
    A

    The /dev/kmem file must be at 777 permissions.

    B

    The administrator is using other shell than ksh.

    C

    The number of pipe handles at /etc/tunables is too low.

    D

    The topas command must be run with root at least once previously.


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    To examine the Exhibit， press the Exhibit button. Using the "ps -mo THREAD" output as shown in the exhibit， which of the following conclusions is most appropriate to draw？（）
    A

     This is a uniprocessor system

    B

     The "prog" process has a nice value of 107

    C

     There are two active processors on this system

    D

     The "prog" process will only be scheduled to run on processor 0


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）
    A

     foo ； lsps -s

    B

     tprof -kx ； foo

    C

     iostat ； foo ； iostat

    D

     vmstat -s ； foo ； vmstat s


    正确答案： C
    解析： 暂无解析

相关内容