XP Practical PC, 3e Chapter 7 1 Connecting to the Internet.

Practical PC, 3eChapter 7

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XP

Chapter 7

Connecting to the Internet


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XPConnecting to the Internet

• In this Chapter, you will learn:– What an Internet connection is

– Why you might want to connect to the Internet

– What you need for the connection

– How to connect to your ISP

– What World Wide Wait means

– About modems


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XPAn Internet Connection

• The Internet is a communications network that spans the entire globe.

• The Internet gives you access to services and a variety of computer data.

• The World Wide Web (WWW) is one of the Internet services available.

• An Internet connection is the way that your computer accesses the Internet.


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• When your PC is connected to the Internet, it is called a client computer.

• Your client computer sends out requests for information and processes the answer when it is received back.

• You can connect to the Internet through a dial-up connection or through a network (like in an office environment).


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• From a home computer, you connect to the Internet through an Internet Service Provider (ISP) which is a company who sells access time.

• AOL, Comcast and AT&T Worldnet are ISPs.• Your ISP connects to the Internet through a

Network Service Provider (NSP).• An Internet server contains the information you

are looking for and is normally connected full time to the Internet.


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An Internet connection


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XPWhy connect to the Internet?

• There are a tremendous amount of information and services available. For instance, you can:– Get the latest news and weather

– Read the days newspaper

– Communicate in minutes with friends and business associates through email

– Make travel reservations

– Buy all of your Christmas presents

– Run a meeting through a video conference


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XPWhy connect to the Internet?

• For instance, you can (cont):– Pay your bills

– Take a college course

– Do the research for a homework paper and then send the paper to your professor

– Play games

– Join an on-line chat group


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XPWhat you need to Connect

• There are many ways to connect to the Internet. • The usual connection requires a computer, a

modem, a phone line, an ISP, and communications software.

• Any computer can be used to connect, but the computer must be connected to a device that converts computer data to be sent over a phone line to the ISP. This device is called a modem.


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• Your modem will connect you to your ISP which will provide you with a user-id and password for security and identification.

• Your ISP will also provide you with your unique email address and various tools for managing your mail.


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• Things to consider when selecting an ISP:– Do they provide a local phone number for access?

– Does it offer high speed connections and one that is compatible with your modem?

– Does it provide software for connecting to and surfing the Internet as well as managing your email?

– Can you have multiple email accounts and unlimited access time?

– Do they have remote access and 24 hour technical support?


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Communications software


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XPConnecting to your ISP

• Steps to connect to your ISP include:– Install the communications software

– Set up the software for your user-id/password and local telephone number

– Use the software to dial the ISP

• Some software (like a word processor) is Internet smart and will also dial your ISP when you use the send option.


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XPConnecting to your ISP

Using Network Connections to connect to your ISP


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XPWhat is the World Wide Wait?

• The Internet is growing rapidly, and accessing data on it can sometimes be slow.

• High volume transfers and technical problems can cause “traffic jams.”

• The World Wide Web (WWW) has been nicknamed “World Wide Wait.”

• Traffic jams are often caused by insufficient bandwidth - a measure of the transmission capacity.


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• There are several things you can do to avoid the World Wide wait:– Get a high speed modem to provide the highest

possible bandwidth.

– Avoid peak hours of usage

– If your ISP’s lines are always busy, look at other ISPs

– Disconnect when you are complete so that others can connect


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Typical wait reasons and solutions


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XPHardware – Modems

• A modem converts digital computer signals to analog signals that travel over telephone lines.

• Computers and the Internet use digital signals in the form of 0s and 1s.

• Data is transferred between them using analog signals in the form of sound waves.


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• There are three types of modems for your computer:– Internal – installed inside the computer and hooked into

the main circuit board. A phone line cable connects to the back of the computer.

– External – hooks by serial cable to the computer and by phone cable to the telephone jack.

– PCMCIA modem – housed on a credit card sized card, it is handy for use on notebook computers.


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Three types of modems

ExternalInternal

PCMCIA card


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• Modem speed is measured in thousands of bits per second (Kbps)

• Modems typically operate in ranges of 14.4 (very slow) to 56 kbps

• V.92 modems allow digital data transfers without converting to analog

• Data/fax modems communicate with fax machines• Data/voice modems can function as answering

machines


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• Modems occasionally need troubleshooting – some areas to try:– Check both ends of the phone cord connection to be

sure they are firmly plugged in and in the correct jack.

– Make sure external modems are plugged in.

– Make sure you have a dial tone on the phone line.

– Dial your ISP using a regular phone to check the number.

– Use Windows control panel to help troubleshoot.


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Troubleshooting your modem

You can initiate a modem test by clicking this button


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XPUsing Windows Internet Connection Wizard

The Internet Connection Wizard


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XPWhat do you think?

Do we need anonymous digital cash?

1. Have you ever made a purchase from the Internet using a credit card?

2. Do you think that most people believe that using a credit card in a restaurant is safer than using a credit card on the Internet?

3. 3. Do you think that anonymous digital cash is a good idea?


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XPChapter Summary

• You should now be able to:– Connect to the Internet.

– Select an Internet Service Provider

– Install communications software and connect to your ISP

– Troubleshoot various causes of slow response time on the Internet

– Select, install and troubleshoot a modem

XP Practical PC, 3e Chapter 7 1 Connecting to the Internet.

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