1

ITGS - introduction

A computer may have:

• a direct connection to a net (cable);

• or remote access (modem).

Connect network to other network through:

• cables

• wireless, etc

Network

2

ITGS - introduction

What can we do?

• e-Mail

• World Wide Web

• Forum

• Chat

• Game

Internet: Services

3

ITGS - introduction

What can we do?

• Send a message

• Study materials

• Download software

• Get medical advices

• Live radio

Internet: Services

• Discussions

• Stock market

• Buy & sell

• Information from libraries

4

ITGS - introduction

What are the dark sides?

•

Internet: Dark side

5

ITGS - introduction

WWW is made up of interlinked documents called Web pages.

Web pages = text + pictures

Web site = a collection of related web pages stored on the same computer.

Home page = an entry page of web site.

Web site has a unique address (URL) >.

Internet: World Wide Web

6

ITGS - introductionInternet: Web site

7

ITGS - introduction

Uniform resource locator URL (address)

http://www.

Domen

http://www.znanje.org

Hyper >

Internet: World Wide Web

8

ITGS - introduction

Contains:

• text

• pictures

• animation

• audio

• video

• Links >

Internet: Web site

9

ITGS - introduction

Hypertext system (random jumping)

Reading the pages in own order (Reader)

Hyperlink – link to:

• the same document (Web page)

• the same Web site

• the domain

• any Internet file

Internet: Web site

10

ITGS - introduction

How to find your way to back?

Web browser

• Back and forward buttons

• Bookmark or favorites (add to favorites)

Internet: Web site

11

ITGS - introduction

Search engine: Database that catalogs Web locations based on content

How to find information?

Indexed collection of information stored in computer.

Internet: Search engine

12

ITGS - introduction

To find information:

Type a keyword or keywords into a search field click a button, and wait a frew seconds for your Web browser to display a list of hits. (automatic ranking)

Internet: Search engine

13

ITGS - introduction

Another way to use a search engine:

- a directory

- subject tree

a hierarchical catalog of Web sites compiled by researchers (Yahoo)

Internet: Search engine

14

ITGS - introduction

May large Web sites include Search buttons that enable you to search for site-specific information.

Internet: Search engine

15

ITGS - introduction

Connect to the Internet

• ISP

• Education network

Internet: ISP

16

ITGS - introduction

Connect to the Internet

• Wire (

• Wireless

Internet: ISP

17

ITGS - introduction

Internet Electronic mail (E-mail):

• User name (login name or alias)

• Mailbox (storage area)

• Inbox ()

• Waiting for send

• Attachment

• Host name

• firstname_lastname@hostname.com

Internet: E-mail

18

ITGS - introduction

Internet Security:

• Spam-unwanted email from unknown sender)

• Spam filters.

• Hackers (malicious programmers).

• Identity (ID) theft.

• S&E: After receiving spam someone will ask is using the Internet good or not.

Internet Security – Malicious software

19

ITGS - introduction

FAQ:

1. Type text

2. Top of text scroll out Where is text ?

Word : Missed text

20

ITGS - introduction

Social & Ethical issues PrivacyContent (someone read your document)

File

21

ITGS - introduction

Social & Ethical issues Integrity

changeContent (hacker change document or use document)Content (someone change your document on your PC)

File

22

ITGS - introduction

Is it possible to connect different computer networks: Yes (which) No (why)

PC : Network

23

ITGS - introduction

Hyperlinks can point to Web-pages: at the same location (why) at location made by the same author (why) at different locations (where you want)

PC : Internet

24

ITGS - introduction

E-mail address is: user_ name@host_name host_ name@user_name

PC : Internet

25

ITGS - introduction

Search engine can search files on your PC: Yes (which) No (why)

PC : Internet

26

ITGS - introduction

Which type of file we can send as attachment: All Someone (which) None (why)

PC : Internet

27

ITGS - introduction

We can use key on keyboard to return to the screen previously displayed in the browser window: Yes (which) No (why)

PC : Internet

28

ITGS - introduction

Put them in the correct order : CSelect

Word : Jumbled the Words