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Network +

Network +. Tom McLaughlin b-admin, mcse, mous, a+, net+ (mct, linux) tom@tomax7.com http://www.tomax7.com. Networking Enables:. Information Sharing. Centralized Administration and Support. Hardware and Software Sharing. Networking Benefits. Mail Server. Mail Server. Database Server.

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Network +

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  1. Network + Tom McLaughlin b-admin, mcse, mous, a+, net+ (mct, linux) tom@tomax7.com http://www.tomax7.com

  2. Networking Enables: Information Sharing Centralized Administration and Support Hardware and Software Sharing Networking Benefits

  3. Mail Server Mail Server Database Server Database Server Fax Server Fax Server Database Database File and Print Server Directory Services Server File and Print Server Client Computer Roles of Computers in a Network Mail Server Database Server Fax Server File and Print Server

  4. Peer-to-Peer Client-Server Types of Networks

  5. Scope of Networks Local Area Network Wide Area Network

  6. Segment Terminator Terminator Bus Topology

  7. Hub Star Topology

  8. Ring Topology

  9. Mesh Topology

  10. Star-Bus Bus Star-Ring Hybrid Topologies

  11. Characteristics Description Access Method CSMA/CD Transfer Speed Standard Ethernet – 10 Mbps Fast Ethernet – 100 Mbps Gigabit Ethernet – 1 Gbps (1000 Mbps) Ethernet Carrier Sense Multiple Access Collision Detection Transmits signal Detects signal Collision detected

  12. Physical Ring Logical Ring MSAU Characteristics Description Access Method Tokenpassing Transfer Speed 4 to 16 Mbps for all cable types Token Ring

  13. Fiber Distributed Data Interface Secondary Ring Primary Ring Characteristics Description Access Method Token passing Transfer Speed Fiber-optic at 155 Mbps to 622 Mbps

  14. Twisted-Pair Unshielded (UTP) Shielded (STP) 10BaseT Coaxial ThinNet ThickNet 10Base2, 10Base5 Fiber-Optics Network Cables Types of Cables

  15. Infrared Transmission Narrowband Radio Transmission Wireless Communication Devices Wireless Communication Devices

  16. Repeater Transmits data to all connected computers Hub Transmits data to all connected computers in a star topology Repeaters and Hubs Repeater Hub

  17. Bridges Bridge

  18. Switch Switches

  19. Routers Router Router Router Router

  20. Ethernet Token Ring Gateways Gateway

  21. Wireless Communication by Using IrDA WindowsClient Laptop Mouse Infrared Data Association (IrDA)

  22. Application Layer Presentation Layer Session Layer Transport Layer Network Layer Data Link Layer Physical Layer Open Systems Interconnection (OSI) Reference Model

  23. Broadcast Unicast Multicast Types of Data Transmissions

  24. IP Address Classes Class A Network ID Host ID Class B Network ID Host ID Class C Network ID Host ID w x y z

  25. IP Address 192.168.1.100 IP Addresses 192.168.2.100 192.168.3.100 192.168.1.0 192.168.2.0 192.168.3.0 Network ID 192.168.1.100 192.168.2.101 Host ID

  26. Subnet 1 Subnet 2 1 2 Hub Hub Router Subnets

  27. Addressing Guidelines The First Number in the Network ID Cannot Be 127 The Host ID Cannot Be All 255s The Host ID Cannot Be All Zeros The Host ID Must Be Unique to the Local Network ID

  28. IP Address 10 . 217 . 123 . 7 00001010 11011001 01111011 00000111 Subnet Mask 255 . 255 . 240 . 0 11111111 11111111 11110000 00000000 Number of Subnet Mask Bits (ones) 8 + 8 + 4 + 0 = 20 IP Address in CIDR Notation 10.217.123.7/20 CIDR Notation

  29. Internet The Internet Server Text, Audio, Video, and Graphics Data Connection Using TCP/IP Protocol Client

  30. Electronic Mail (e-mail) World Wide Web (WWW) Chat Internet News File Transfer Protocol (FTP) Telnet Internet Internet Services

  31. Intranet Internet Extranet Intranets

  32. URL (http://example.microsoft.com/tutorial/default.html) Protocol used (http://) DNS address (example.microsoft.com) Path on the server (/tutorial/default.html) http://example.microsoft.com/tutorial/default.html Uniform Resource Locator (URL)

  33. Domain Name (example.microsoft.com) Top-level domain (com) Second-level domain (microsoft.com) Subdomain (example.microsoft.com) com microsoft.com example.microsoft.com Domain Naming

  34. Domain Forest Domain nwtraders.msft Tree Domain Domain Domain Domain Tree namerica.nwtraders.msft samerica.nwtraders.msft Domain Organization

  35. Single User Account Scalability Single Logon Centralized Management Features of a Domain

  36. Paris Easy Location of Information Sales Repair User1 Computer1 User2 Printer1 Streamlined Access Delegated Authority Benefits of a Domain Organized Objects

  37. HTTP HTTPS FTP SMTP NNTP HTML DHTML Internet Internet Protocols Server Data Connection Using an Internet Protocol Client

  38. Application Layer Application Layer HTTP FTP Transport Layer Transport Layer TCP UDP Internet Layer Internet Layer IP ICMP IGMP ARP Network Interface Layer Network Interface Layer ATM Ethernet TCP/IP Layers

  39. 192.168.0.10 w2.x2.y2.z2 Web Server Web Browser Internet w1.x1.y1.z1 NAT Network Address Translators (NATs)

  40. LAN LAN LAN Internet Proxy Servers AuthorizedWeb Site Proxy Server Restricted Web Site

  41. LAN LAN LAN AuthorizedUser Internet Firewall Unauthorized User Firewalls

  42. Questions? Answers www.tomax7.com

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