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Chapter 6: The Internet1 The Internet Chapter 6. Chapter 6: The Internet2 Internet Technology Background Internet Infrastructure Internet Protocols, Addresses,

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Presentation on theme: "Chapter 6: The Internet1 The Internet Chapter 6. Chapter 6: The Internet2 Internet Technology Background Internet Infrastructure Internet Protocols, Addresses,"— Presentation transcript:

1 Chapter 6: The Internet1 The Internet Chapter 6

2 Chapter 6: The Internet2 Internet Technology Background Internet Infrastructure Internet Protocols, Addresses, and Domains Connection Speed

3 Chapter 6: The Internet3 Background The ARPANET Internet connects computers all over the globe The Internet is the world’s largest network

4 Chapter 6: The Internet4 Internet Infrastructure Who owns it? Internet backbone Network service providers Network access points Internet service provider

5 Internet Infrastructure Chapter 6: The Internet5

6 6 Internet Infrastructure To communicate with an ISP, your computer uses some type of communications device, such as a modem

7 Chapter 6: The Internet7 Internet Protocols, Addresses, and Domains

8 Chapter 6: The Internet8 Internet Protocols, Addresses, and Domains Domain name

9 Chapter 6: The Internet9 Internet Protocols, Addresses, and Domains

10 Chapter 6: The Internet10 Connection Speed Data travels over the Internet at an incredible speed Latency Upstream vs. downstream speed

11 Chapter 6: The Internet11 Connection Speed Asymmetric Internet connection Symmetric Internet connection Internet connection options –Fixed Internet access –Portable Internet access –Mobile Internet access

12 Chapter 6: The Internet12 Fixed Internet Access Dial-up Connections DSL, ISDN, and Dedicated Lines Cable Internet Service Satellite Internet Service Fixed Wireless Service Fixed Internet Connection Roundup

13 Chapter 6: The Internet13 Dial-up Connections Dial-up connection

14 Chapter 6: The Internet14 Dial-up Connections Voiceband modem Modem speed is measured in bits per second

15 Chapter 6: The Internet15 DSL, ISDN, and Dedicated Lines T Lines ISDN

16 Chapter 6: The Internet16 DSL, ISDN, and Dedicated Lines DSL

17 Chapter 6: The Internet17 Cable Internet Service Cable Internet

18 Chapter 6: The Internet18 Cable Internet Service Cable modem Always-on connection

19 Chapter 6: The Internet19 Satellite Internet Service Satellite Internet service Satellite modem

20 Chapter 6: The Internet20 Satellite Internet Service

21 Chapter 6: The Internet21 Fixed Wireless Service Fixed wireless Internet service

22 Chapter 6: The Internet22 Fixed Internet Connection Roundup

23 Chapter 6: The Internet23 Portable and Mobile Internet Access Internet to Go Wi-Fi Hotspots Portable and Mobile WiMAX Portable Satellite Service Cellular Data Service

24 Chapter 6: The Internet24 Internet To Go Portable Internet Mobile Internet access

25 Chapter 6: The Internet25 Wi-Fi Hotspots Wi-Fi hotspot Usually not good for mobile Internet access

26 Chapter 6: The Internet26 Portable and Mobile WiMAX WiMAX

27 Chapter 6: The Internet27 Portable Satellite Service

28 Chapter 6: The Internet28 Cellular Data Services Cellular phone technology

29 Chapter 6: The Internet29 Cellular Data Services The fastest cellular technologies for Internet access are EDGE, EV-DO, and HSUPA Cellular-ready PDA

30 Chapter 6: The Internet30 Internet Services Real-Time Messaging Voice over IP Grid Computing FTP File sharing

31 Chapter 6: The Internet31 Real-Time Messaging Real-time messaging system

32 Chapter 6: The Internet32 Voice over IP VoIP

33 Chapter 6: The Internet33 Voice over IP Advantages Disadvantages

34 Chapter 6: The Internet34 Grid Computing Grid computing system

35 Chapter 6: The Internet35 FTP

36 Chapter 6: The Internet36 FTP

37 Chapter 6: The Internet37 File Sharing P2P file sharing BitTorrent

38 Chapter 6: The Internet38 Internet Security Intrusion Attempts Securing Ports Routers and NAT Virtual Private Networks

39 Chapter 6: The Internet39 Intrusion Attempts Intrusion Port probe

40 Chapter 6: The Internet40 Securing Ports Turn off your computer when you’re not using it Firewall

41 Chapter 6: The Internet41 Securing Ports

42 Chapter 6: The Internet42 Routers and NAT Routers Routable IP address Private IP address

43 Chapter 6: The Internet43 Routers and NAT

44 Chapter 6: The Internet44 Routers and NAT Network address translation (NAT)

45 Chapter 6: The Internet45 Virtual Private Networks Virtual private network (VPN) access Access to a VPN is usually by invitation only.

46 Chapter 6: The Internet46 Virtual Private Networks

47 Chapter 6: The Internet47 Chapter 6 Complete The Internet

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