Computer Communications and Networking: Quality Excellence Innovation

1. សាកលវិទ្យាល័យភ្នំពេញអន្តរជាតិសាកលវិទ្យាល័យភ្នំពេញអន្តរជាតិ Phnom Penh International University Computer Literacy 2011-2012 Quality Excellence Innovation

2. Chapter 09Networking and Internet

3. Objectives • After this chapter, students would be able to: • Discuss the components required for successful communications • Identify various sending and receiving devices • Describe uses of computer communications • List advantages of using a network • Differentiate among client/server, peer-to-peer, and P2P networks • Describe the various network communications standards • Explain the purpose of communications software • Various types of lines for communications over the telephone network • Describe commonly used communications devices • Discuss different ways to set up a home network • Identify various physical and wireless transmission media

4. Communications What are computer communications? • Process in which two or more computers or devices transfer data, instructions, and information

5. Sending device— initiates instruction to transmit data, instructions, or information Communications device— connects the sending device to the communications channel Communications channel— media on which data, instructions, or information travel Communications device— connects the communications channel to the receiving device Receiving device— accepts transmission of data, instructions, or information Communications What is needed for successful communications?

6. Uses of Computer Communications What are some uses of communications technology? Web E-Mail Internet InstantMessaging Chat Rooms Newsgroups Internet Telephony WebFolders Fax Machine or Computer Fax/Modem VideoConferencing FTP

7. Text messagingallows users to send and receive short text messages on a phone or PDA Wireless instant messagingallows wireless mobile devices to exchange messages Picture messaging allows users to send graphics, pictures, video clips, sound files, and short text messages Uses of Computer Communications What are wireless messaging services? Video messaging

8. Uses of Computer Communications What are wireless Internet access points and cybercafés? • Wireless Internet access point allows wireless connection to Internet in public location • 3G network • Cybercaféis coffee house that provides computers with Internet access

9. Uses of Computer Communications What is a global positioning system (GPS)? Step 1.GPS satellites orbit Earth. Every thousandth of a second, each satellite sends a signal that indicates its current position to the GPS receiver. Step 2.A GPS receiver (such as in a car, a wearable device, a smart phone, a handheld device, or a collar) determines its location on Earth by analyzing at least 3 separate satellite signals from the 24 satellites in orbit.

10. Uses of Computer Communications What are voice mail and web services? • Voice mail is voice message converted to digital form • Web services describe standardized software that enables programmers to create applications that communicate with other remote computers over the Internet or on an internal business network

11. Networks What is a network? • Collection of computers and devices connected via communications devices and transmissionmedia

12. Networks What is a local area network (LAN) and a metropolitan area network (MAN)? • Network in limited geographical area such as home or office building • Wireless LAN (WLAN) • Metropolitan area network (MAN) connects LANs in city or town

13. Networks What is a wide area network (WAN)? • Network that covers large geographic area using many types of media • Internet is world’s largest WAN

14. Extranet allows customers or suppliers to access part of company’s intranet Makes information accessible to employees Typically includes connection to Internet Internal network that uses Internet technologies Networks What is an intranet?

15. Network Communications Standards What is Bluetooth? Short-range radio waves transmitdata between Bluetooth devices

16. Communications Over the Telephone Network What is the public switched telephone network (PSTN)? • Worldwide telephone system that handles voice-oriented telephone calls

17. Communications Devices What is a network card? • Adapter card, PC Card, Express Card module, USB network adapter, or flash card that enables computer or device to access network • Sometimes called network interface card (NIC)

18. Communications Devices What is a wireless access point? • Central communications device that allows computers and devices to transfer data wirelessly among themselves or wirelessly to a wired network

19. Networks and the Internet What is the Internet? • Worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals

20. Networks and the Internet Why do users access the Internet? • Communications Information Shopping Banking and Investing Classes Entertainment 7.Download Music 8. Share Information

21. Networks and the Internet What is the Web? • Billions of documents, called Web pages, available to anyone connected to the Internet A Web site is a collection of related Web pages You can share information on a socialnetworking Web site or a photo sharingcommunity A Web page contains text, graphics, audio, video, and links to other Web pages

22. How the Internet Works • How can you connect to the Internet? Slow-speed technology High-speed connection Dial-up accessmodem in your computer uses a standard telephone line to connect to the Internet DSL, cable modem,fixed wireless, Wi-Fi, and satellite modems Connection must be established each time you log on. Connection is always on—whenever the computer is running

23. MicrosoftInternetExplorer Netscape Firefox Opera Safari The World Wide Web • What is a Web browser? • Program that allows you to view Web pages

24. Other Internet Services • What is E-mail? • E-mail stands for Electronic mail • The transmission of messages and files via a computer network • Messages can consist of simple text or can contain attachments, such as documents, graphics, or audio/video clips • Internet access providers usually provide an e-mail program • Some Web sites—such as MSN Hotmail and Yahoo!—provide free e-mail services

25. MicrosoftInternetExplorer Netscape Firefox Opera Safari The World Wide Web • What is a Web browser? • Program that allows you to view Web pages

26. How to build up computer • Step 1 - Place Windows 7 DVD in your DVD-ROMs drive and start your PC. Windows 7 will start to boot up and you will get the following progress bar. • Step 2 - The next screen allows you to setup your language, time and currency format, keyboard or input method. Choose your required settings and click next to continue. • Step 3 - The next screen allows you to install or repair Windows 7. Since we are doing a clean install we will click on "install now". • Step 4 - Read the license terms and tick I accept license terms. Then click next to continue. • Step 5 - You will now be presented with two options. Upgrade or Custom (Advanced). Since we are doing a clean install we will select Custom (Advanced).

27. How to build up computer • Step 6 - Choose where you would like to install Windows 7. If you have one hard drive you will get a similar option to the image below. You can click next to continue. If you have more that one drive or partition then you need to select the appropriate drive and click next. If you need to format or partition a drive then click Drive options (advance) before clicking next. • Step 7 - Windows 7 starts the installation process and starts copying all the necessary files to your hard drive as shown on the image below. • Step 8 - It will go through various stages of the setup and will reboot your system few times. • Step 9 - When your PC reboots it attempts to boot from DVD as its the first boot device. Do not press any key during the boot prompt so Windows 7 will continue with the installation by booting from the hard drive. • Step 10 - After the reboot your computer will be prepared for first use.

28. How to build up computer • Step 11 - At this stage you need to choose a user name and computer name. Click next to continue. The user account you create here is the Administrator account which is the main account for your Windows 7 that has all the privileges. • Step 12 - Choose your password and password hint just incase you forget your password and need to jog your memory. • Step 13 - You can now type the product key that came with Windows 7 and click next. If you do not enter the product key you can still proceed to the next stage. However Windows 7 will run in trial mode for 30 days. You must therefore activate Windows within 30 days otherwise you can not access your computer after 30 days. • Step 14 - Help protect your computer and improve Windows automatically. Choose Use recommended settings. • Step 15 - Review your time and date settings. Select your time zone, correct the date and time and click next to continue.

29. How to build up computer • Step 16 - Select your computer's current location. If you are a home user then choose Home network otherwise select the appropriate option. • Step 17 - Windows will now finalize the settings for your computer and restart. • Step 18 - After the final restart Windows 7 will start to boot up. • Step 19 - Finally you have the logon screen. Just type your password and press enter or click on the arrow to logon to Windows 7 for the first time. • Step 20 - After you have logged on to Windows 7 for the first time, you will see similar desktop to the image below. At this point you can start using your computer. However it may not be fully configured. You need to make sure that all the hardware is detected correctly and the necessary device drivers are installed. This can be done from the device manager.

30. How to build up computer I. Installation windows 7 • Step 1: Place Windows 7 DVD in your DVD-ROMs drive and start your PC. Windows 7 will start to boot up and you will get the following progress bar.

31. How to build up computer I. Installation windows 7 • Step 2: The next screen allows you to setup your language, time and currency format, keyboard or input method. Choose your required settings and click next to continue.

32. How to build up computer Installation windows 7 • Step 3: The next screen allows you to install or repair Windows 7. Since we are doing a clean install we will click on "install now".

33. How to build up computer Installation windows 7 • Step 4: Read the license terms and tick I accept license terms. Then click next to continue.

34. How to build up computer Installation windows 7 • Step 5: You will now be presented with two options. Upgrade or Custom (Advanced). Since we are doing a clean install we will select Custom (Advanced).

35. How to build up computer Installation windows 7 • Step 6: Choose where you would like to install Windows 7. If you have one hard drive you will get a similar option to the image below. You can click next to continue. If you have more that one drive or partition then you need to select the appropriate drive and click next. If you need to format or partition a drive then click Drive options (advance) before clicking next.

36. How to build up computer Installation windows 7 • Step 6:

37. How to build up computer Installation windows 7 • Step 6:

38. How to build up computer Installation windows 7 • Step 6:

39. How to build up computer Installation windows 7 • Step 6:

40. How to build up computer Installation windows 7 • Step 7: Windows 7 starts the installation process and starts copying all the necessary files to your hard drive as shown on the image below.

41. How to build up computer Installation windows 7 • Step 8: It will go through various stages of the setup and will reboot your system few times.

42. How to build up computer Installation windows 7 • Step 8:

43. How to build up computer Installation windows 7 • Step 8:

44. How to build up computer Installation windows 7 • Step 9: When your PC reboots it attempts to boot from DVD as its the first boot device. Do not press any key during the boot prompt so Windows 7 will continue with the installation by booting from the hard drive.

45. How to build up computer Installation windows 7 • Step 10: After the reboot your computer will be prepared for first use.

46. How to build up computer Installation windows 7 • Step 11: Place Windows 7 DVD in your dvd-rom drive and start your PC. Windows 7 will start to boot up and you will get the following progress bar.

47. How to build up computer Installation windows 7 • Step 12: The next screen allows you to setup your language, time and currency format, keyboard or input method. Choose your required settings and click next to continue.

48. How to build up computer Installation windows 7 • Step 13: The next screen allows you to install or repair Windows 7. Since we are doing a clean install we will click on "install now".

49. How to build up computer Installation windows 7 • Step 14: Read the license terms and tick I accept license terms. Then click next to continue.

50. How to build up computer Installation windows 7 • Step 15: You will now be presented with two options. Upgrade or Custom (Advanced). Since we are doing a clean install we will select Custom (Advanced).