Computer Concepts

Computing

Quiz 7 :

The Web and E-Mail

Quiz 7 :

The Web and E-Mail

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Your friend, who is a little computer phobic, is going to be creating his first Web page and asks you to recommend some software for the task. Which one requires the least knowledge of HTML tags: Notepad or Microsoft Word? img
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Web page creation by Microsoft word
When a user wants to create a web page and he does not have more knowledge of HTML tags then Microsoft word should be used for creating the web page because it requires a least knowledge of HTML tags.
HTML documents can be created by using Notepad for windows and Text Edit for Macintosh which allows a quick modification for HTML documents but user must have knowledge of html tags to create an html using notepad.
When user wants to create a web page by Microsoft word then he just has to follow few steps:
1) Start Microsoft Word
2) Create blank document
3) Save this document from save as a web page option.
Therefore, the appropriate word to fill in the blank is Word.

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Use a search engine and search operators to formulate a search for information about your favorite era in history. Can you make a more targeted search to find out what kind of slang was used during that time period?
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Formulating Search Using Boolean Operators
Consider 1930's Gandhi's Dandi March as an example.
1. Basically, the search engine searches for keywords. Here key words are "Gandhi" and "Dandi March".
2. Suppose user wants to know about participation of Gandhi in Dandi march, then user can use Boolean operator 'AND' and type "Gandhi AND Dandi March". It shows all those sites which contains "Gandhi and Dandi March".
3. Suppose user is not particular about "Gandhi in Dandi March", then user can use Boolean Operator 'OR' and type "Gandhi OR Dandi March". It shows all those sites having "Gandhi or Dandi March or both".
4. Suppose user wants to know only about Dandi March and not about "Gandhi", then user can use the Boolean operator 'NOT' and type "Dandi March NOT Gandhi". It only shows those sites which contains only "Dandi March".
5. If user wants an exact match for what he is looking he can type those in Quotes ("").
6. For more targeted search user can use advanced search option, which provide ways to make the searches more precise.
7. User can use this advanced search option to limit the search to material written in a specific language (or a specific slang in a specific date) or for a specific date.

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Explain why cookies are useful in an environment that is based on a stateless protocol, and provide some concrete examples of their use.
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Use of cookies and examples
Use of cookies:
A cookie is a name-value pair that has been sent by the Website to the Web browser. If a user enters some information on a Website and when the user visits the page again, the message like "Welcome ABC" is displayed. This is possible because the cookies are stored on hard disk of computer.
Some of the uses of cookies are given below:
1) Monitoring path for keeping track of pages.
2) Retaining personal information of a person.
3) Collecting information for presenting ad banners.
Concrete examples of using cookies:
HTTP is a stateless protocol, whenever, user connects to Web page, server assumes it as new visit. Cookies helps server for tracking activity of any user.
Examples of using cookie are given below:
1. Suppose that the browser is used to visit an online music store. Search for the favorite brands, listen to some simple tracks, and put a few albums in the cart. All the records are saved by using the cookies because it helps in tracking activities.
2. Nowadays sports can be watched live on internet on a site called "starsports.com". This site provides a 15 min preview of the sport live, after that it should be subscribed for it to watch continuously without interrupt.
How does that site know that a 15 min preview has been watched by the user and show the message to subscribe?
Well the answer is simple. First time when that website is visited, cookies will be stored in the computer. After 15 min again visit the same website, it will show message to subscribe, because it recognizes the cookies that are there in the computer which were stored earlier.

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Explain the purpose of JavaScript.
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Suppose that you are about to check out at an online store, but you don't see any indication that your transaction data will be protected by a secure connection. It would be best, under these circumstances, to use PGP software to encrypt your shipping and billing data. True or false? img
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Explain the relationship between an HTML source document and a Web page. List five HTML tags and describe how each is used.
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You're looking through a list of cookies stored on your computer, but you don't remember visiting sites such as bannerbank, hotlog, and ad.bb. You can assume that these cookies were created by img , such as ad-serving cookies.
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One of your relatives wants to try online shopping, but is suspicious that her credit card number might get stolen from a merchant's server by a hacker using a packet sniffer. Is it correct to tell her that she can best avoid these potential rip-offs by using a secure connection, such as HTTPS? Yes or no? img
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You're getting ready for a week-long trip. You'd rather not take your computer, but you'll have access to public computers. Rather than use Webmail while you're away from home, you decide to use your familiar POP e?mail img software by storing it and your e-mail files on a portable USB flash drive.
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Briefly sketch the evolution of Web browsers. Describe how browsers use plugins.
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List the four most commonly used styles of citation and demonstrate how to correctly format a citation to a Web page using each style.
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Describe the advantages and disadvantages of each type of Web page development tool discussed in this chapter.
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Your Inbox is getting more and more unsolicited messages with "fisd foos" in the header. You decide to generate a new rule for your security software's spam img to block those irritating messages.
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Create a short tutorial explaining how to create, test, and post a Web page using a text editor such as Notepad or TextEdit.
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Suppose you visit a Web site that has eye?catching pages. You want to know how these pages were formatted, so you use one of the options on your browser's menu to take a look at the HTML img document.
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Draw a multi-panel cartoon that shows how a Web server and browser interact. Include the following terms: Web server , browser , HTTP , HTML , port , socket , HTML document , graphic file , and URL.
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You'd prefer not to have the search engine you use maintain accumulative records of your searches. You can block img from a specific search engine site, and that setting will force the search engine to assign a different ID number to you for each session.
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Suppose you click a link at a Web site and get a message that the file cannot be displayed because it is in PDF format. To view the file, you need an updated version of your browser. True or false? img
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Suppose you're performing a local test of a Web page you created. All the page elements appear to be correctly positioned and formatted. You're also happy to discover that your large graphics files are displayed quite quickly by your browser. Can you expect similar performance after you post the page on a Web site? Yes or no? img
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Create a comic-strip like sequence of diagrams that illustrates how the following technologies interact: Web crawler, search engine database, indexer, query processor.
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