Chapter 2

​

Connecting and Communicating Online

Discovering Computers 2016

Tools, Apps, Devices, and the Impact of Technology

Objectives Overview

See Page 56

for Detailed Objectives

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

2

Objectives Overview

See Page 56

for Detailed Objectives

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

3

The Internet

• The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals

Pages 56 - 57

Figure 2-1

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

4

The Internet

• The Internet originated as ARPANET in September 1969 and had two main goals:

Page 56

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

5

The Internet

Page 56

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

6

Connecting to the Internet

• With wired connections, a computer or device physically attaches via a cable or wire to a communications device
• Computers without a communications device can use a wireless modem or other communications device that enables wireless connectivity

Page 58

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

7

Connecting to the Internet

Page 58

Figure 2-2

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

8

Connecting to the Internet

Page 59

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

9

Connecting to the Internet

• A hot spot is a wireless network that provides Internet connections to mobile computers and devices

Pages 59 - 60

Figure 2-3

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

10

Connecting to the Internet

Page 58

• An Internet service provider (ISP) is a business that provides individuals and organizations access to the Internet free or for a fee
• Bandwidth represents the amount of data that travels over a network
• Megabyte (MB)
• Gigabyte (GB)

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

11

Connecting to the Internet

Page 62

Figure 2-4

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

12

Connecting to the Internet

• An IP address is a sequence of numbers that uniquely identifies each computer or device connected to the Internet
• A domain name is a text-based name that corresponds to the IP address
• A DNS server translates the domain name into its associated IP address

Pages 62 - 64

Figure 2-5

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

13

Connecting to the Internet

Page 63

Table 2-3

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

14

Connecting to the Internet

Page 64

Figure 2-6

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

15

The World Wide Web

• The World Wide Web (WWW), or web, consists of a worldwide collection of electronic documents (webpages)
• A website is a collection of related webpages and associated items
• A web server is a computer that delivers requested webpages to your computer
• Web 2.0 refers to websites that provide a means for users to share personal information, allow users to modify website content, and provide applications through a browser

Page 65

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

16

The World Wide Web

• A browser is an application that enables users with an Internet connection to access and view webpages on a computer or mobile device
• A home page is the first page that a website displays
• Current browsers typically support tabbed browsing

Pages 65 - 66

Figure 2-7

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

17

The World Wide Web

• A webpage has a unique address, called a web address or URL

Page 68

Figure 2-8

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

18

The World Wide Web

• A web app is an application stored on a web server that you access through a browser
• Web app hosts usually provide storage for users’ data and information on their servers, known as cloud storage

Pages 69 – 70

Figure 2-9

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

19

Types of Websites

• A web search engine is software that finds websites, webpages, images, videos, news, maps, and other information related to a specific topic
• A subject directory classifies webpages in an organized set of categories, such as sports or shopping, and related subcategories

Pages 71 - 72

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

20

Types of Websites

• Search operators can help to refine your search

Page 72

Table 2-4

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

21

Types of Websites

• There are several types of websites

Pages 71 – 76

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

22

Types of Websites

Pages 77 – 79

​

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

23

Types of Websites

Pages 79 – 82

​

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

24

Types of Websites

Pages 82 – 84

​

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

25

Types of Websites

• Web publishing is the creation and maintenance of websites

Page 84

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26

Digital Media on the Web

• Multimedia refers to any application that combines text with media

Page 85

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27

Digital Media on the Web

• A graphic is a visual representation of nontext information
• Graphic formats include BMP, GIF, JPEG, PNG, and TIFF

Pages 85 – 86

Figure 2-22

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

28

Digital Media on the Web

• An infographic is a visual representation of data and information, designed to communicate quickly, simplify complex concepts, or present patterns or trends

Page 86

Figure 2-23

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

29

Digital Media on the Web

• Animation is the appearance of motion created by displaying a series of still images in sequence

Page 86

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

30

Digital Media on the Web

• Audio includes music, speech, or any other sound
• Compressed to reduce file size
• You listen to audio on your computer using a media player

Pages 86 - 87

Figure 2-24

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

31

Digital Media on the Web

• Video consists of images displayed in motion
• Virtual reality (VR) is the use of computers to simulate a real or imagined environment that appears as a three-dimensional space

Pages 87 - 88

Figure 2-25

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

32

Digital Media on the Web

Page 88

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33

Other Internet Services

• Email is the transmission of messages and files via a computer network
• An email program allows you to create, send, receive, forward, store, print, and delete email messages

Page 88

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34

Other Internet Services

Page 89

Figure 2-26

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

35

Other Internet Services

• An email list is a group of email addresses used for mass distribution of a message

Page 90

Figure 2-27

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

36

Other Internet Services

• Instant messaging services notify you when one or more of your established contacts are online and then allows you to exchange messages or files or join a private chat room with them

Page 90

Figure 2-28

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

37

Other Internet Services

• A chat is a real-time typed conversation that takes place on a computer or mobile device with many other online users
• A chat room is a website or application that permits users to chat with others who are online at the same time

Page 91

Figure 2-29

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

38

Other Internet Services

• An online discussion is an online area in which users have written discussions about a particular subject

Page 91

Figure 2-30

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

39

Other Internet Services

• VoIP (Voice over IP) enables users to speak to other users via their Internet connection

Page 92

© 2016 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

40

Other Internet Services

• FTP (File Transfer Protocol) is an Internet standard that permits file uploading and downloading to and from other computers on the Internet
• Many operating systems include FTP capabilities
• An FTP server is a computer that allows users to upload and/or download files using FTP

Page 92

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41

Netiquette

• Netiquette is the code of acceptable Internet behavior

Page 94

Figure 2-31

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42

Chapter Summary

Page 95

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43

Chapter 2 Complete

Chapter 2

​

Connecting and Communicating Online

Discovering Computers 2016

Tools, Apps, Devices, and the Impact of Technology