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● TCP/IP communication protocol contains four layers. From bottom to top, the four layers are __(71)__.（71）A．network interface layer, internet layer, transport layer and application layerB．internet layer, network interface layer, transport layer and appli

题目

● TCP/IP communication protocol contains four layers. From bottom to top, the four layers are __(71)__.

（71）A．network interface layer, internet layer, transport layer and application layer

B．internet layer, network interface layer, transport layer and application layer

C．network interface layer, transport layer, network interface layer and application layer

D．application layer, transport layer, internet layer and network interface layer

相似考题

1.Proper lubrication of the main bearings is more easily obtained in a single acting, four-stroke/cycle diesel engine than in a tow-stroke/cycle diesel engine because________.A.The direction of pressure on the journal in four-stroke engine is continuouslyB.positive feed lubricators are installed on all bearings of four-stroke engine, whereas as a splash feed system is used on tow-stroke engineC.four-stroke engines usually utilize a heavier grade of oil than tow-stroke enginesD.Low-stroke engines usually consume less lube oil than four-stroke engines

2.How many aspects does face normally have?A、OneB、TwoC、ThreeD、Four

3.下列语句能给数组赋值而不使用for循环的是A．myArray{[1]="One";[2]="Two";[3]="Three";}B．String s[5]=new String[]{"Zero", "One", "Two", "There", "Four"};C．String s[]=new String[]{"Zero", "One", "Two", "There", "Four"};D．String s[]=new String[]=|"Zero", "One", "Two", "There", "Four"};

4.16．A．oneB．twoC．threeD．four

更多“● TCP／IP communication protocol contains four layers. From bottom to top, the four layers ”相关问题

  • 第1题：

    下列语句能给数组赋值，而不使用for循环的是

    A．myArray{[1]="One"；[2]="Two"；[3]="Three"；}

    B．String s[5]=new String[] {"Zero","One","Two","Three","Four"}；

    C．String s[]=new String[] {"Zero","One","Two","Three","Four"}；

    D．String s[]=new String[]= {"Zero","One","Two","Three","Four"}；


    正确答案：C
    解析：字符串数组赋初值的方法有两种，一种是如选项C一样初始化。另外一种是先为每个数组元素分配引用空间，再为每个数组元素分配空间并赋初值。例如还可做如下赋值：
      string s[]=new String[5]；
      s[0]="Zero"；
      s[1]="One"；
      s[2]="Two"；
      s[3]="Three"；
      s[4]="Four"；

  • 第2题：

    在VRP中,PQ的各队列的缺省长度为()。

    A.top－20middle－40normal－60bottom－80

    B.top－20middle－20normal－20bottom－20

    C.top－10middle－20normal－40bottom－80

    D.top－80middle－60normal－40bottom－20


    参考答案：A

  • 第3题：

    __________

    A.pour
    B.hour
    C.course
    D.four

    答案：B
    解析：

  • 第4题：

    下列程序的运行结果是（ ）。 SET EXACT ON s="ni"+SPACE(2) IF S=”ni” IF S=”ni” ?"one" ELSE ?"two" END IF ELSE IF S="ni" ?"three" ELSE ?"four" END IF END IF RETURN

    A.one

    B.two

    C.three

    D.four


    正确答案：C
    C。【解析】用==比较两个字符串时，当两个字符串完圣相同时，运算结果是逻辑真．T．。用=比较两个字符串时，运算结果与SETEXACTONIOFF的设置有关：0N先在较短的字符串的尾部加上若干个空格，使两个字符串的长度相等，然后进行精确比较；当处于0FF状态时，只要右边字符串与左边字符串的前面部分内容相匹配，即可得到逻辑真．T．。所以本题运行结果为three。

  • 第5题：

    （ 14 ）下列程序的运行结果是

    SET EXACT ON

    s="ni"+SPACE(2)

    IF s=="ni"

    IF s="ni"

    ? "one"

    ELSE

    ? "two"

    ENDIF

    ELSE

    IF s="ni"

    ? "three"

    ELSE

    ? "four"

    ENDIF

    ENDIF

    RETURN

    A) one

    B) two

    C)three

    D)four


    正确答案：C

  • 第6题：

    下列给字符串二维数组进行赋值的语句中，错误的是（）。

    A．String s[ ] [ ] = new String [ ] [ ] { { “One “ , “ Two “ }, { “ Three “ , “ Four “ } } ;

    B．String s[ ] [ ] = { { “ One “ , “Two “},{ “ Three “ , “ Four “ } } ;

    C．String s[ ] [ ] = new String [ ] [ ] { { “Zero”} , { “ One ” , “Two” , “ Three” , “ Four” } } ;

    D．String s[ 2] [2 ] = { { “ One ” , “Two”},{“ Three” , “ Four” } } ;


    String s[ 2] [2 ] = { { “ One ” , “Two”},{“ Three” , “ Four” } } ;

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