A customer is experiencing a performance bottleneck in a disk subsystem.  The server is performing sequential I/O with a small number of users requesting large files.  Which of the following would most likely resolve the bottleneck？（）A、Increase seek trans

题目

A customer is experiencing a performance bottleneck in a disk subsystem.  The server is performing sequential I/O with a small number of users requesting large files.  Which of the following would most likely resolve the bottleneck？（）

  • A、Increase seek translation
  • B、Increase data transfer rate
  • C、Decrease rotational latency
  • D、Increase rotational latency
相似考题

1.All of the following are contained in a server baseline document EXCEPT().A. number of users.B. number of files.C. memory usage.D. average disk I/O.

2.Due to slow response times， a customer purchased additional memory. After the memory was installed，response time was not improved.  They complained to the pSeries technical specialist. Which of the following questions should be asked of this customer？（）A、Who recommended the memory purchase？B、Have more users been added since the memory purchase？C、Why were additional CPUs not ordered at the same time as the memory？D、Did a performance analysis of peak periods show a memory bottleneck？

3.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

4.Which of the following statements is mot correct about mirroring?()A.Mirroring, with the write-verify option turned on, can be used to increase performance.B.Mirroring is a better choice that disk-striping, for large sequential-access file system when one is looking for performance.C.Mirroring, with a parallel-scheduling policy, may improve I/O read-operation performance.D.Mirroring, with maximum inter-disk allocation policy, is used to enhance availability.

参考答案和解析
正确答案:B
更多“A customer is experiencing a performance bottleneck in a disk subsystem.  The server is performing sequential I/O with a small number of users requesting large files.  Which of the following would most likely resolve the bottleneck？（）A、Increase seek trans”相关问题

  • 第1题：

    A technical specialist has a requirement to implement a 4-way POWER5 server with a small Web server partition and a high performance database server partition. The Web server provides a client front-end to the database server. The most important concerns are speed of communication between the Web server and the database and I/O speed of the database. Which of the following virtualization features would be most appropriate？（）

    • A、Virtual SCSI
    • B、Virtual Ethernet
    • C、Virtual I/O Server
    • D、Micro-Partitioning

    正确答案:B

  • 第2题：

    An application server is running slowly. After viewing performance monitoring data it is detected that the disk queue length is high.  Which of the following could BEST resolve the situation？（）

    • A、 Add more disk drives.
    • B、 Increase the amount of virtual memory.
    • C、 Add a faster processor.
    • D、 Add more memory to stop paging to disk.

    正确答案:D

  • 第3题：

    Users in an office routinely work with large graphics files. Which of the following preventivemaintenance tools can assist in maintaining system performance?（）

    • A、FPROT
    • B、DEFRAG
    • C、CHKDSK
    • D、SFC

    正确答案:B

  • 第4题：

    Which of the following items would MOST likely be kept in a documentation file for each server？（）

    • A、 Cost of the equipment
    • B、 The users home directories
    • C、 Server configuration
    • D、 Warranty information
    • E、 Accessories that came with the system

    正确答案:C,D

  • 第5题：

    An xSeries specialist monitors a customer’s server that has poor performance.  The customer is running an x365 with a ServeRAID 6i controller with write-back cache turned on and ten 15K rpm drives in a RAID-5 array.  It is a mission-critical server and must have a redundant storage system.  Performance tests indicate that the Average Disk sec/Transfer exceeds 20 ms.  Which of the following is the lowest-cost method to increase the throughput？（）

    • A、Disable the ServRAID cache
    • B、Change the RAID level to 10
    • C、Change the cache level to Write Through
    • D、Add five more drives to the array to increase the number of read/write heads

    正确答案:C

  • 第6题：

    The workload requirement for a Web server running in Micro-Partitioned p5-550 has increased 300 percent over the past six months. The initial partition definitions assigned 0.5 processing units and one virtual processor to the Web server partition. Three months previously， an additional 0.5 CPU was added to the Web server partition. When the technical specialist attempted to allocate a further 0.5 CPU to this partition， no additional performance was achieved. Which of the following actions would most likely resolve the problem？（）

    • A、Add another virtual Ethernet.
    • B、Change the partition to be uncapped.
    • C、Change the number of virtual processors to 2.
    • D、Increase the amount of memory assigned to the partition by 300 percent.

    正确答案:C

  • 第7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8题：

    Which of the following statements is mot correct about mirroring?（）

    • A、Mirroring, with the write-verify option turned on, can be used to increase performance.
    • B、Mirroring is a better choice that disk-striping, for large sequential-access file system when one is looking for performance.
    • C、Mirroring, with a parallel-scheduling policy, may improve I/O read-operation performance.
    • D、Mirroring, with maximum inter-disk allocation policy, is used to enhance availability.

    正确答案:C

  • 第9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10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11题：

    单选题
    A customer is experiencing a performance bottleneck.  The server is performing sequential I/O requests with large block sizes of 64KB.  Improving which of the following storage subsystem characteristics has the biggest impact on this bottleneck？（）
    A

    Seek Time

    B

    Drive RPM

    C

    Data Transfer Rate

    D

    Rotational Latency


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    A customer is experiencing a performance bottleneck in a disk subsystem.  The server is performing sequential I/O with a small number of users requesting large files.  Which of the following would most likely resolve the bottleneck？（）
    A

    Increase seek translation

    B

    Increase data transfer rate

    C

    Decrease rotational latency

    D

    Increase rotational latency


    正确答案： B
    解析： 暂无解析

  • 第13题：

    All of the following are contained in a server baseline document EXCEPT：（）

    • A、number of users.
    • B、number of files.
    • C、memory usage.
    • D、average disk I/O

    正确答案:B

  • 第14题：

    All of the following are contained in a server baseline document EXCEPT（）.

    • A、number of users.
    • B、number of files.
    • C、memory usage.
    • D、average disk I/O.

    正确答案:A

  • 第15题：

    A server has five hot pluggable SCSI disk drives in a RAID 5 array.  The server OS crashed and the server will not boot.  The administrator noticed that all of the disk drives have gone offline.Which of the following components would MOST likely have caused the problem？（）

    • A、Memory
    • B、SCSI backplane
    • C、SCSI drives
    • D、Motherboard

    正确答案:B

  • 第16题：

    Which of the following devices would MOST likely integrate a DHCP server?（）

    • A、Router
    • B、Hub
    • C、Switch
    • D、Bridge

    正确答案:A

  • 第17题：

    A 4-way x445 server with 2GB of memory running Windows 2003 Server with Exchange 2003 is performing poorly.  Users are complaining of slow response times when accessing their email.  Which subsystem should be checked first as a potential bottleneck？（）

    • A、Processors
    • B、Memory subsystem
    • C、Storage subsystem
    • D、Network connectivity

    正确答案:B

  • 第18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19题：

    Which of the following products helps a customer identify a performance bottleneck?（）

    • A、Tivoli Storage Manager 
    • B、Tivoli Storage Productivity Center for Disk 
    • C、Tivoli Storage Productivity Center for Data 
    • D、Tivoli Storage Productivity Center for Replication

    正确答案:B

  • 第20题：

    A customer is experiencing a performance bottleneck.  The server is performing sequential I/O requests with large block sizes of 64KB.  Improving which of the following storage subsystem characteristics has the biggest impact on this bottleneck？（）

    • A、Seek Time
    • B、Drive RPM
    • C、Data Transfer Rate
    • D、Rotational Latency

    正确答案:B

  • 第21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22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23题：

    多选题
    Which of the following items would MOST likely be kept in a documentation file for each server？（）
    A

    Cost of the equipment

    B

    The users home directories

    C

    Server configuration

    D

    Warranty information

    E

    Accessories that came with the system


    正确答案： A,D
    解析： 暂无解析

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