a working model A: mock-up B: data link C: wire pole link

Flow control is one of the basic functions of the data link layer. Regarding flow control, which one is correct among following statements? A: Only the data link layer has flow control B: Not only the data link layer has flow control, but the flow control objects of each layer are the same C: Not only does the data link layer have flow control, but the flow control objects of each layer are different D: None of the above is right

链式栈结点为：（data，link），top指向栈顶.若想摘除栈顶结点，并将删除结点的值保存到x中，则应执行操作（）。 A: x=top->data；top=top->link；       B: top=top->link；x=top->link；      C: x=top；top=top->link；         D: x=top->link；

4.链式栈结点为：(data,link)，top指向栈顶.若想摘除栈顶结点，并将删除结点的值保存到x中,则应执行操作（）。 A: x=top->data;top=top->link； B: top=top->link;x=top->link； C: x=top;top=top->link； D: x=top->link；

链式栈结点为：(data,link)，top指向栈顶，若想删除栈顶结点，并将删除结点的值保存到x中,则应执行操作（ ）。[img=458x498]18034c4c2018a68.jpg[/img] A: x = top->link； B: x = top; top = top->link； C: top = top->link; x = top->link； D: x = top->data; top = top->link；

设链式栈中结点的结构为(data，link)，且top是指向栈顶的指针。若想摘除链式栈的栈顶结点，并将被摘除结点的值保存到x中，则应执行的操作是______。 A: x=top-＞data;top=top-＞link; B: top=top-＞link;x=top-＞data; C: x=top;top=top-＞link; D: x=top-＞data;

Which OSI layer handles flow control, data segmentation, and reliability A: Application B: Physical C: Transport D: Data Link

单选题 In a linked list, each element contains (). A: data B: a link C: a record D: a and b

The WDM transmission network consists of three layers: Physical Layer、Data Link Layer and Network Layer.

中国大学MOOC: 为了建立如图所示存储结果，data为数据区，next为指向结点的指针域，请填空： data next struct link{ char data; ;}node;