1. Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Introduction to Networking Technologies Introduction to Networking

2. 2 A network can be defined as two or more computers connected together in such a way that they can share resources.

3. 3 The purpose of a network is to share resources.

4. 4 A resource may be: A file A folder A printer A disk drive Or just about anything else that exists on a computer.

5. 5 The basic components of a network are: Client Server Physical medium Common language

6. 6 The Client is the computer requesting the use of a resource. May I have Worksheet-101? Client Server

7. 7 The Server is the computer providing the resource. Sure, here it is! Worksheet-101 Client Server

8. 8 In some networks, every computer acts as both a Client and a Server. Client & Server Client & Server Client & Server

9. 9 Peer-to-Peer Network Client & Server Client & Server Client & Server

10. 10 Peer-to-Peer Network No centralized data access. Security handled by: - Assigning each resource a password. - Entering each user’s name and password on every computer in the network.

11. 11 Peer-to-peer works best with a a small number of computers.

12. 12 A single computer can act as the server for several clients. Server Client

13. 13 Client/Server Network Client Server

14. 14 Client/Server Network Centralized data access. Centralized security. Centralized administration, record keeping, and control.

15. 15 Larger networks require the client/server arrangement.

16. 16 The basic components of a network are: Client Server Physical medium Common language

17. 17 The Physical Medium is the channel the data travels between computers. Physical Medium Client Server

18. 18 The Physical Media can be: Wire Fiber Optic Cable Wireless Link (RF or Infrared) Hardware devices such as network cards, hubs, routers, etc.

19. 19 The basic components of a network are: Client Server Physical medium Common language

20. 20 The common language is the Network Protocol. May I have Worksheet-101? Sure, here it is! Client Server

21. 21 Protocol A set of communication rules used by computers that exchange data.

22. 22 One of the most basic ways to classify networks is by their topology.

23. 23 Topology refers to the way the computers in the network are connected to each other.

24. 24 The most common topologies are: Bus Star Ring Mesh Wireless

25. 25 Bus Topology “T” “Backbone”

26. 26 Bus Topology A single cable interconnects all workstations. The cable is terminated at both ends. Terminator

27. 27 Star Topology

28. 28 Star Topology All workstations connect to a single central hub. Hub

29. 29 Ring Topology

30. 30 Ring Topology Backbone is a ring. Each workstation connects only to two other workstations.

31. 31 Mesh Topology

32. 32 Mesh Topology Router Net-1 Net-4 Net-3 Net-2

33. 33 The Internet is an example of a Mesh topology. Internet

34. 34 Wireless LAN (WLAN) Access Point (AP)

35. 35 Certification tests may require you to recognize and identify network topologies.

36. 36 Bus or Ring?

37. 37 Bus or Ring?

38. 38 Bus or Ring?

39. 39 Mesh or Star?

40. 40 Mesh or Star?

41. 41 Mesh or Star?

42. 42 Another way of classifying networks is by their size or geographical span.

43. 43 The most common size classifications are the: Local Area Network (LAN) Metropolitan Area Network (MAN) Wide Area Network (WAN)

44. 44 The Local Area Network (LAN)

45. 45 Metropolitan Area Network (MAN)

46. 46 Wide Area Network WAN

47. 47 Define network, protocol, resource, and topology. Explain the purpose of a network. List several examples of resources that computers can share. Explain the difference between Peer-to-peer and Client/Server networks.

48. 48 Define client and server, and explain the purpose of each. Define Physical Media and list several examples. Recognize the Bus, Star, Ring, Mesh and Wireless topologies and be able to explain the differences between them. Define LAN, MAN, WAN and WLAN, and explain their differences. List and describe the four basic components that make up a network.

49. Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Introduction to Networking Technologies Controlling Windows Access

50. 50 The Windows 9x Logon

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52. 52 A Windows Logon Account All users must have an account All accounts have specific rights and permissions

53. 53 Local Accounts Used in Workgroups and stand-alone systems Account details stored on the “local” machine

54. 54 Domain Accounts Used in networks with NT or Windows 2000/2003 servers Controls local machine and network access Account details stored on the server

55. 55 Built-in User Accounts Administrator Guest

56. 56 Administrator Account The installer has administrator privileges. The administrator creates other accounts. The administrator is all-powerful.

57. 57 Creating User Accounts In Windows 2000 and XP, new users are added with the Computer Management snap-in

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65. 65 User Groups

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69. 69 Administrators Administrators have full access to the computer/domain

70. 70 Users Users can operate the computer and save documents, but cannot install programs or make potentially damaging changes to the system files and settings

71. 71 Power Users Power Users can modify the computer and install programs, but cannot read files that belong to other users

72. 72 Backup Operator Backup Operators can only use a backup program to backup files and folders from the computer

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79. 79 Access is Controlled Account must be created Permissions and Rights must be granted to users With proper configuration, security can be absolute.

80. 80 Now, it’s your turn.