A. 1 ......... Because URLs are addresses or paths. They begin with the protocol name. The most common protocol you will activate is an HTTP document. Thus, most of the addresses on the worldwide web begin with http:// Occasionally you will find an address that begins with another protocol such as ftp:// or telnet://. As you might have guessed, these are references to documents encoded for use with those particular protocols.
A. 2 ......... One of the most common operating systems on the Internet is called Unix. Unix is case - sensitive, meaning that INDIANA is not the same as indiana. To avoid confusion, most domain names are almost entirely made up of lower case letters. (even if they are not on unix - based computers!)
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Note all lower case, no spaces, and abbreviations.
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The problem is that you would not have a consistent address! A PPP account gives your computer temporary access to the Internet, but if you stored a web page on your computer, people couldn't reach it when you are not attached! Also, your IP number would be constantly changing!

The common way around this problem is this: When you are given a PPP account, you frequently are given a dial - in account as well. All your email goes to that account, and if you want to have a web page, you put it in that account as well. Then you can either use dial - in connections to modify that dial - in account, or use PPP and a telnet client to attach to that account and modify it.
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