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In the open systems interconnection (OSI) reference model, "layer" means one of seven conceptually complete,(71) arranged groups of services, functions, and protocols, that extend across all open systems.Application layer provides means for the applicatio

题目

In the open systems interconnection (OSI) reference model, "layer" means one of seven conceptually complete,(71) arranged groups of services, functions, and protocols, that extend across all open systems.Application layer provides means for the application(72) to access the OSI environment. Presentation layer provides for the selection of a common syntax for representing data.(73) layer provides the means necessary for cooperating presentation entities to organize and synchronize their dialog and to manage their data exchange. Transport layer provides a reliable end-to-end data transfer service. Network layer provides for the entities in the transport layer the means for transferring blocks of data, by(74) and switching through the network between the open systems in which those entities reside. Data link layer provides services to transfer data between network layer entities. Physical layer provides the mechanical, electrical, functional, and procedural means to establish, maintain and(75) physical connections for transfer of bits over a transmission medium.

A．rankly

B．levelly

C．layered

D．hierarchically

相似考题

1.有如下程序：#includeusing namespace std;class Con{char ID;public:Con():ID('A'){cout<<1;}Con(char ID ． :ID(ID ． {cout<<2;}Con(Con&C ． :ID(c.getID()){cout<<3;}char getID() const{return ID;}};void show(ConC ． {cout<int main(){Con c1;show(c1);Con c2('B');show(c2);return 0;}执行上面程序的输出是 【 10 】 。

2.Internet来源于单词( )A．LANB．WANC．Interconnection + networkD．MAN

3.Acknowledgements, sequencing, and flow control are functions that are handled by which layer of the OSI model?A. Layer 5B. Layer 4C. Layer 7D. Layer 6E. Layer 3F. Layer 2G. Layer 1

4.A host computer has been correctly configured with a static IP address, but the default gateway is incorrectly set. Which layer of the OSI model will be first affected by this configuration error?A. Layer 1B. Layer 2C. Layer 3D. Layer 4E. Layer 5F. Layer 6E. Layer 7

更多“In the open systems interconnection (OSI) reference model, "layer" means one of seven conc ”相关问题

  • 第1题：

    AcustomerhastenRS/6000ModelM80，twopSeries690Model681，fivePOWER5510andtwoPOWER6560machinesinstalledandrunningcommercialapplications.TheywanttodoaserverconsolidationstudyinordertoreplacetheexistingsystemswithPOWER7systems.Whatperformancemetricisrecommendedwhenevaluatingthereplacementsystem？（）

    A.IBMCPW

    B.IBMrPerf

    C.SPECint_rate2006

    D.IDEASInternationalRPE2


    参考答案：B

  • 第2题：

    PPP的执行在OSI模型哪个层?()

    A.Layer3

    B.Layer4

    C.Layer2

    D.Layer5


    参考答案：C

  • 第3题：

    Acknowledgements, sequencing, and flow control are characteristics of which OSI layer()。

    A.Layer2

    B.Layer3

    C.Layer4

    D.Layer5

    E.Layer6

    F.Layer7


    参考答案：C

  • 第4题：

    Acknowldgement, Sequencing, and Flow control are characteristics of which OSI layer?()

    A. Layer 2

    B. Layer 3

    C. Layer 4

    D. Layer 5

    E. Layer 6

    F. Layer 7


    参考答案：C

  • 第5题：

    Acknowledgements,sequencing,andflowcontrolarecharacteristicsofwhichOSIlayer?()

    A.Layer2

    B.Layer3

    C.Layer4

    D.Layer5

    E.Layer6

    F.Layer7


    参考答案：C

  • 第6题：

    【填空题】运行下列程序,输出结果是____。 #include ＜iostream＞ using namespace std; enum opt{ONE,TWO,THREE,FOUR,FIVE,SIX,SEVEN}op; int main（void) { cout＜＜ONE; cout＜＜TWO; cout＜＜SIX; return 0; }


    B 解析：本题考查循环辅助控制语句break和continue，前者退出整个for循环，后者跳过本次循环没有执行完的若干条语句，开始下一次循环操作，建议读者采用本书推荐的列表法分析。

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