Which is the correct description of a pinned buffer in the database buffer cache（）A、The buffer is currently being accessed.B、The buffer is empty and has not been used.C、The contents of the buffer have changed and must be flushed to the disk by the DBWn pr

题目

Which is the correct description of a pinned buffer in the database buffer cache（）

  • A、The buffer is currently being accessed.
  • B、The buffer is empty and has not been used.
  • C、The contents of the buffer have changed and must be flushed to the disk by the DBWn process. 
  • D、The buffer is a candidate for immediate aging out and its contents are synchronized with the block contents on the disk.
相似考题

1.The true value of life is not in_________, but in_________.()A.which we get, which we giveB.what we get, what we giveC.which do we get, which do we giveD.how we get, how we give

2.An overtaken vessel means a vessel________.A.which has been overtaken by another vesselB.which is going to overtake another vesselC.which has overtaken another vesselD.which is going to be overtaken by another vessel

3.A feedback is an input ____A.which governs the state of a variableB.which provides a visual and audible alarmC.which indicates values of controlled variablesD.which measures the state of the controlled variable

4.He asked ____.A.which chair should he takeB.which chair he should takeC.which chair he takeD.which chair he took

更多“Which is the c”相关问题

  • 第1题：

    What is the procedure for announcing routes leared from RIP to ISIS neighbors?()

    A. Apply an import policy to RIP which announces the routes to ISIS.

    B. Apply an export policy to ISIS which announces the routes to ISIS.

    C. Apply an export policy to RIP which announces the routes to ISIS.

    D. Apply an import policy to ISIS which imports the routes into ISIS.


    参考答案：B

  • 第2题：

    The factory _______ we‘ll visit next week is not far from here. A. where B. to which C. which D. in which


    正确答案：C

  • 第3题：

    That is the house _______ you can enjoy the scenery. A. in that B. that C. which D. from which


    正确答案：D

  • 第4题：

    Bulk cargo refers to ______.

    A.cargo which occupies a large volume of space

    B.cargo which requires refrigeration

    C.cargo which is very dense

    D.homogeneous cargo not enclosed in a container


    正确答案：D
    散货指的是没有包装的同一种货物。

  • 第5题：

    He has made another wonderful discovery, ____ of great importance to science.

    A. which I think is
    B. which I think it is
    C. I think which is
    D. of which I think it is

    答案：A
    解析：
    “which I think is”是“which”引导的一个非限定性定语从句，此处修饰“discovery”。故选A。此句意为：他已经创造了另外一个伟大的发现，我认为对科学是至关重要的。

  • 第6题：

    There are many cities（）very fast.

    • A、expand
    • B、which expand
    • C、which expanding
    • D、to expand

    正确答案:B

  • 第7题：

    Which of the following dbx commands should be used to obtain a stack trace from a coredump file?（）

    • A、trace 
    • B、where 
    • C、status 
    • D、which

    正确答案:B

  • 第8题：

    Which statement is true about the UNDO_RETENTION parameter when retention guarantee is notenabled（）

    • A、It is the time period after which the undo data becomes obsolete.
    • B、It is the time period after which the committed undo data would be transferred to a temporarytablespace.
    • C、It is the minimum time period up to which the committed undo data would be retained if free undo spaceis available.
    • D、It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.

    正确答案:C

  • 第9题：

    单选题
    If the redelivery of a vessel is delayed by causes （），hire is payable at the charter rate until redelivery even though the market rate may have gone up or down.
    A

    for which neither party is responsible

    B

    for which the owner is responsible

    C

    for which either party is responsible

    D

    for which the charterer is responsible


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    General, the best way for replacement of lamp is （）.
    A

    after the point is reached at which the failures begin to increase rapidly

    B

    before the point is reached at which the failures begin to increase rapidly

    C

    before the point is reached at which the failures begin to increase slowly

    D

    after the point is reached at which the failures begin to increase slowly


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    Which of the following statements is correct concerning the “flash point ” of a liquid?（）
    A

    It is lower than the ignition temperature

    B

    It is the temperature at which a substance will spontaneously ignite

    C

    It is the temperature at which a substance, when ignited, will continue to bum

    D

    It is the temperature at which the released vapors will fall within the explosive range


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Living in the western part of the country has its problems, ______ obtaining fresh water is not the least.
    A

    with which    

    B

    for which    

    C

    of which    

    D

    which


    正确答案： C
    解析：
    生活在这个国家的西部有一些问题，其中最大的问题是获取淡水。句中需要关系代词which引导定语从句，还需要一个适当的介词与之搭配。因此C选项符合要求。

  • 第13题：

    WhichexplanationdescribesawirelessclientIGMPmulticastjoinrequestusingaCiscoUnified WirelessNetworkv5.2architectureofAPtoWLANcontroller?()

    A.passedbytheAPtoitsconnectedswitchandthenforwardeddirectlytotheconnectedrouter，which createsanMGIDtableentry

    B.passedbytheAPtotheWLANcontrollerandthenforwardedtothesourcePIM-enabledrouter，which createsanMGIDtableentry

    C.passedbytheAPtotheWLANcontroller，whichcreatesanMGIDtableentrybeforeforwardingtothe directlyconnectedPIM-enabledrouter

    D.passedbytheAPtoitsconnectedswitchandthenforwardedtotherendezvouspointrouter，which createsanMGIDtableentry


    参考答案：C

  • 第14题：

    This is an important problem _______ too few social scientists have researched. A. which B. that C. into that D. into which


    正确答案：D
    into which引导的是problem的定语从句。which指代problem，into与research搭配。   （本解析由学员提供）

  • 第15题：

    27． What is teleshopping?

    A． Buying the things which you know from TV by phone． '

    B． Buying the things which you know from TV by mail．

    C． Buying the things which you know from newspapers by phone．

    D． Buying the things which you know from newspapers by mail．


    正确答案：A
    27．A【解析】“teleshopping”就是看过电视后，打电话买所要的东西。

  • 第16题：

    For a floating vessel, the center of flotation is the point in the waterplane ______.

    A.about which the vessel lists and trims

    B.which coincides with the center of buoyancy

    C.which, in the absence of external forces, is always vertically aligned with the center of gravity

    D.which is shown in the hydrostatic tables as VCB


    正确答案：A
    对漂浮船，漂心是水线面上的一点，船舶绕该点横倾或纵倾。

  • 第17题：

    He has made a discovery, ___ of great importance to the progress of science and technology.

    A.which I think it is
    B.which I think is

    C.think which is

    D.of which I think it is

    答案：B
    解析：
    本题主要考查定语从句，全句意为“他有了一项新的发现，我认为这项发现对科技进步非常重要。”I think 作插入语，去掉不影响句意，which在这里作关系代词代替discovery，放在句首在从句中作主语，即：I think the discovery（which）is of great importance..。不需要再有it作形式主语。

    考点
    定语从句

  • 第18题：

    This growth,（）mainly in Southeast Asia and Africa, has dramatic consequences.

    • A、happens
    • B、which is happening
    • C、which happening
    • D、which happened

    正确答案:B

  • 第19题：

    Which of the following utilities are used to choose which programs run at startup？ （）

    • A、SFC
    • B、SETDEBUG
    • C、MSCONFIG
    • D、REGEDIT

    正确答案:C

  • 第20题：

    Which statement is true about the UNDO_RETENTION parameter when retention guarantee is not enabled（）

    • A、It is the time period after which the undo data becomes obsolete.
    • B、It is the time period after which the committed undo data would be transferred to a temporary tablespace.
    • C、It is the minimum time period up to which the committed undo data would be retained if free undo space isavailable.
    • D、It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.

    正确答案:C

  • 第21题：

    单选题
    The temperature （） a liquid changes its state from liquid to gas depends upon the liquid itself and upon the pressure （） it is subjected in the containing vessel.
    A

    at which/to which

    B

    from which/at which

    C

    to which/from which

    D

    in which/on which


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    You are configuring the data source for an Oracle database. You will need to specify a test table for WebLogic to test the status of the database. Which option should you choose?（）
    A

    a table name which has 100s of records

    B

    a table name which has 10s of records

    C

    a table name which has empty records

    D

    a table name which has 1000s of records

    E

    never use a table name


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Which command would you type to see a concise display of which interfaces are up and which are down?（）
    A

    show interfaces brief

    B

    show interfaces status

    C

    show ip interface brief

    D

    show interfaces terse


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    Bulk cargo refers to（）.
    A

    cargo which occupies a large volume of space

    B

    cargo which require refrigeration

    C

    cargo which is very dense

    D

    homogeneous cargo not enclosed in a container


    正确答案： D
    解析： 暂无解析

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