问题 问答题

在Windows和Linux操作系统中都有一个Ping命令,它是最常用的网络管理王具之一,其工作原理是通过向远程主机发送一个回送请求/应答报文来验证网络连接是否正常。
1.Ping是一个应用层程序,它有没有传输层若有,它使用的是TCP还是UDP协议若没有,数据是如何封装的

答案

参考答案:没有传输层,直接封装在ICMP报文

解析:本题主要考查的是对ping命令使用的掌握情况。
Ping程序发送的是Internet控制报文协议(ICMP)的回送请求/应答报文,该报文是直接封装在ICMP报文中。不需要封装在传输层协议(TCP或UDP)中。

阅读理解

Directions: The following people are going to take part in job interviews. Match the interviews (marked with A, B, C, D, E and F) with the people so that they can have a greater chance of being employed. There is one extra paragraph that you don’t need.

61. Tom is a university student graduating soon. He is smart, swift and quick-minded. He is fond of challenges. He can react to sudden changes very well.

62. Mary is a graduate who often can communicate and cooperate with others well and can make friends easily.

63. Tim is a hardworking person. He has done several jobs but still hasn’t found his favorite. Every time before he goes for an interview, he’ll make full preparations as to what interviewers may ask about him.

64. Helen has worked in an advertising company for 8 years before and now she is considering finding a job in a bigger advertising company. She is a talented woman and possesses outstanding skills.

65. Mike is a brave and honest person. He often says what’s in the mind. He has many true friends.

A

You’ll be asked a lot of questions concerning a wide variety of subjects. For example, you will be asked about the political affairs to see whether you keep an eye on the things happening at home and abroad. Of course, you should also know about the company itself very well—the basic information, the policy, the market, and the potential.

B

You may be interviewed with one or two other interviewees. The interviewer may ask you to solve problems which require you and your partner to work together. It’s as important to lead as to listen. So, team spirit matters.

C

The interviewer explores certain predetermined areas using questions which have been written in advance. You may be required to list your past experience, skills and personality. Your experience and skills are compared to specific job tasks to see whether you are fit for the job.

D

The interviewer intentionally attempts to upset you to see how you react under pressure. You may be asked questions that make you uncomfortable or you may be interrupted when you are speaking. At those times, your quick responses count.

E

In some job interviews, you will be asked about your social relationship. Sometimes, the interviewer will even ask you how much hard liquor (酒) you can drink. Just keep to the fact, or you’ll suffer later.

F

Situations are set up which simulate (copy) common problems you may meet with on the job. Your responses to these situations are measured against predetermined standards. The way of dealing with the problem really matters. The interviewers can determine whether you have the basic qualifications for  the job.

判断题