In most wide area networks, the communication subnet consists of two distinct components:transmission lines andA.networtsB.switching elementsC.computersD.data terminal equipment

题目

In most wide area networks, the communication subnet consists of two distinct components:transmission lines and

A.networts

B.switching elements

C.computers

D.data terminal equipment


相似考题
更多“In most wide area networks, the communication subnet consists of two distinct components:t ”相关问题
  • 第1题:

    classParent{Stringone,two;

    classParent{

    Stringone,two;

    publicParent(Stringa,Stringb){

    one=a;

    two=b;}

    publicvoidprint(){System.out.println(one);}}

    publicclassChildextendsParent{

    publicChild(Stringa,Stringb){

    super(a,b);

    }

    publicvoidprint(){

    System.out.println(one+"to"+two);

    }

    publicstaticvoidmain(Stringarg[]){

    Parentp=newParent("south","north");

    Parentt=newChild("east","west");

    p.print();

    t.print();

    }

    }

    Whichofthefollowingiscorrect?()


    参考答案:E
    这个题目涉及继承时的多态性问题,在前面的问题中已经有讲述,要注意的是语句t.print();在运行时t实际指向的是一个Child对象,即java在运行时决定变量的实际类型,而在编译时t是一个Parent对象,因此,如果子类Child中有父类中没有的方法,例如printAll(),那么不能使用t.printAll()。

  • 第2题:

    A workstation is added to a newly created subnet using 192.168.100.0/24. A DHCP server is available on subnet 192.168.101.0/24. The user is unable to lease an address from the DHCP server. Which of the following would BEST resolve the problem?()

    A. Assign the workstation a static IP address.

    B. Add a second DHCP server to the 192.168.101.0/24 subnet.

    C. Add a DHCP relay to the 192.168.100.0/24 subnet.

    D. Add a DHCP server to the 192.168.100.0/24 subnet


    参考答案:C

  • 第3题:

    In terms of manner of articulation, the sounds [p], [b], [t], [d], [k], [g] are

    A. affricates
    B. fricatives
    C. bilabial
    D. oral stops

    答案:D
    解析:
    考查辅音的分类。根据发音方式不同,英语的辅音可以分为:塞音(stop)、鼻音(nasal)、擦音(fricative)、近音(approximant)、边音(lateral)、塞擦音(affricate)等。[p],[b],[tl,[d],[k],[g]属于气息非常强烈的通过口腔的爆破音,也称作塞音。

  • 第4题:

    有以下程序: matin() { char * s[]={"one", "two", "three"}, *p; p=s[1]; printf("% c, % s\n", *(p+1),s [o]); } 执行后的输出结果是______。

    A.n, two

    B.t, one

    C.w, one

    D.o, two


    正确答案:C
    解析:程序定义了一个指针数组s和一个字符型指针变量p。s有3个元素,其中s[0]指向字符串"one,s[1]指向字符串"two",s[2]指向字符串"three",执行p=s[1]后p指向字符串"two",所以*(p+1)=w。

  • 第5题:

    In the RGB color spaces, each pixel on the screen has a corresponding RGB value which consists of(71)components.

    A.two

    B.three

    C.four

    D.six


    正确答案:B
    解析:译文:在RGB色彩空间中,屏幕上的每一个像素对应一个RGB值,这个值由三个分量组成。

  • 第6题:

    The engine has more than 300( ),made of a number of different materials.

    A.compositions
    B.ingredients
    C.compounds
    D.components

    答案:D
    解析:
    component尤指用于机械装置的(组)成(部)分。A.composition尤用于指物体内在固有的不可分割的(组)成(部)分;B.ingredient主要指混合物之成分,如:蛋糕的一种“成分”(ingredient)是糖,糖的“成分”(compositions)有氢等;C.compound“混合物”。