问题 单项选择题

包过滤防火墙对数据包的过滤依据不包括()。

A.源IP地址

B.源端口号

C.MAC地址

D.目的IP地址

答案

参考答案:C

解析:

本题考查防火墙相关知识。包过滤防火墙对数据包的过滤依据包括源IP地址、源端口号、目标IP地址和目标端口号。

选择题
写作题

假定你是李华,你的美国笔友Peter给你发来E-mail寻求帮助。请根据E-mail内容、写作要点和写作要求回信。

Dear Li Hua,

My mom and dad have a rule for their kids: You get all A’s in your exams or you’re out.I’m only 18, I do my homework and try my best, but I feel the pressure from them and I worry about what it’s doing to me.I wonder what it is like in your family.What should I do?

                                                                                

                                                                                

                                                                                

                                                                                

                                                                                

                                                                                

                                                                                

                                                                                

Yours

Peter

写作要点:

1.        告诉Peter你的情况(不能出现真实姓名、学校、家庭地址等信息);

2.        给Peter提出解决问题的具体建议。

写作要求:

1.        短文须写在答题卡指定区域;

2.        词数100以上(不含写好的部分);

3.        内容充实,结构完整,语意连贯;

4.        书写清晰、工整。

Dear Peter,

I’m surprised this kind of thing should happen in your country…

                                                                                

                                                                                

                                                                                

                                                                                

                                                                                

Yours

Li Hua