计算机专业英语课后作业答案计算机专业英语课后作业答案
需积分: 50 102 浏览量
2010-01-13
12:29:15
上传
评论
收藏 23KB DOC 举报
Open Ended Questions:
1. Discuss the uses of the Internet. Which activities have you participated in?
Which one do you think is the most popular?
Some of the uses of the Internet are communicating, shopping, searching,
entertainment, and education. Some activities of communicating are e-mailing,
instant messaging, and discussion groups. Some activities of entertainment are
music, movies, and computer games. Other activities to participate in are shopping,
doing research online, and using online periodicals. The most popular is
communicating.
2. Explain the differences between the three types of providers.
National Service Providers
• Providers, such as AOL, are the most widely used.
• Provide access through standard telephone connections
Regional Service Providers
• Provide access through standard telephone connections
• Service a smaller area
• Users will incur long distance charges if outside their area
Wireless Service Providers
• Do not use telephone connects
• Use wireless modems and other types of wireless devices to provide a connection
3. What are the basic elements of an e-mail message?
The header, the message, and the signature line
4. What is social networking? Describe the three types of social networking sites.
Social networking is connecting individuals to one another. There are three basic
categories of social networking sites: reuniting, friend-of-a-friend, and common
interest.
Reuniting: sites designed to connect people who have known one another but
have lost touch.
Friend-of-a-friend: sites designed to bring together two people who do not
know one another but share a common friend.
Common interest: sites designed to bring together individuals that share
common interests or hobbies.
5. Describe the different types of search engines. Give an example of the type of
search each engine is best for.
Search engines
• Keyword search – uses words and phrases to find information
• Directory search – Also known as an index search organizes information by topic
and/or category
Ex: Google, Yahoo, and AskJeeves
Metasearch engines
评论0
最新资源