南京信息工程大学2009-2010学年第一学期Internet Technologies课程试卷(B卷)

南京信息工程大学试卷
2009－2010学年第一学期Internet Technologies课程试卷( B 卷)本试卷共 3 页；考试时间 120 分钟；任课教师；出卷时间 09 年 12 月
系专业年级班学号姓名得分
Question one
A. Fill in the blanks（10*1score=10scores）
1.Scientists and engineers devised ways to build networks that connected multiple
computers across large geographic distances, which is called or long-haul networks.
2.By 1982, a prototype Internet was in place and the technology had
been tested.
3.Every computer attached to the Internet must be assigned a unique numerical
address called its DNS
4.is one of the main technologies used to provide high-speed data
communication services over a local loop
5.HTTP uses what numeric value, in decimal, of the destination port field of the
TCP header?
6.STMP protocol we use to send Email 。

7.An can be used to protect a private network from outside attack.
Today there are encryption systems that use two keys, one for encryption and one for decryption. The key used for decryption is called a public key
because it must be kept secret. The key used for encryption is called a private key because it can be distributed to anyone.
8.The concept of embedding selectable items in text is called .
B. Explain Abbreviations（10*2scores=20scores）
1.POP3 Post Office Protocol 3
2.URL Uniform/Universal Resource Locator
3.WANs Wide Area Network
Ns Local Area Network
5.C/S client/server
6.B/S Browser/Server
7.ISP Internet Service Provider
8.P2P point to point
9.BBS Bulletin Board System
10.VPN Virtual Private Network
C. Short answer (55scores)
1. Assumed that your email address is jack@ and one of your friend s’ is
mary@, please associated with a figure to explain how you send an email to your friend and how your friend receives it. (Note: You should draw all the hosts and servers, and give all of their proper names, some maybe protocols. 10 scores)
2. Please simply explain how DNS work combining with the below figure.(Note: According to
the figure, you should write 8 steps clearly. 10 scores)
3. Please write the correct router table of R1 in the below figure. (Note: The packet can arrive any subnet by router. 15 scores)
4.Please give the means of every line in the below figure. 10 scores
Request to read a web page.
The server’s DNA is 192.168.0.66
Information about the browser and its paltform
…….
It is ok
The server information is microsoft-iis/5.0
The table’s MIME Type is text/html
The page’s length in 1086 bytes
5.If two computers share an IP address, how do we know which computer is the destination of a given datagram? (10Scores)
Solution: Instead of connecting a computer directly to a DSL or cable modem, insert an additional device that is designed to connect multiple computers without requiring any additional IP addresses
D. Web programming (15scores)
1. Please write the HTML in the below figure.
Picture name: computer.JPG;
Link: /jsj
Text: nuist;
Link: 。