1. Networking Fundamentals Introduction and OSI model

2. CLASSIFICATIONS Introduction

3. LAN – Local Area Network WAN – Wide Area Network PAN – Personal Area Network MAN – Metropolitan Area Network Classifications

5. TOPOLOGIES Introduction

6. Bus Star Ring Mesh Wireless Hybrid Topologies

9. NETWORK MODELS Introduction

10. Client/Server Peer-to-Peer Network Models

11. PROTOCOLS Introduction

12. TCP/IP FIR ATM LLDP NetBIOS & NetBEUI Protocols

16. DEVICES Introduction

17. Media / Converters NIC – Network Interface Card Repeater Hub Gateway Bridge Switch Router Devices

18. Hub Physical Layer Box with lots of Ethernet connection sockets Repeats messages to all connected nodes – Generates wasted traffic – Nodes must filter messages intended for them Cheapest way to connect devices

19. Bridge Data Link Layer Single incoming and outgoing ports Keeps MAC address tables for two LAN segments Filters traffic using the MAC address

20. Switch Connects all nodes to each other like a hub Examines Ethernet messages for destination MAC address Intelligently relays messages toward destination More expensive than hubs Can be combined with hubs

21. Router Network Layer A router connects to two different networks Ex: LAN to WAN (internet) Routers maintain a so-called routing table to keep track of routes – Without routers the internet could not function – Uses the IP address to forward packets

22. Gateway Application Layer down to network layer Connect and translate data between networks with different protocols or architecture For instance, allowing communication between TCP/IP clients and IPX/SPX or AppleTalk A gateway links two systems that do not use the same: – Communication protocols – Data formatting structures – Languages – Architecture

23. STANDARDS GROUPS Introduction

24. IEEE ISO W3C CERN UL EIA TIA ANSI Standards Groups

25. IEEE Institute of Electrical and Electronics Engineers ISO International Organization for Standardization W3C World Wide Web Consortium CERN European Organization for Nuclear Research UL Underwriters Laboratories EIA Energy Information Administration TIA Telecommunications Industry Association ANSI American National Standards Institute Standards Groups

28. OSI MODEL Introduction

29. Application Presentation Session Transport Network Data Link Physical OSI MODEL Mnemonics to Remember Top Down: A Perfectly Simple Technology Narrowed Down Physically All People Seem To Need Data Processing All Pros Search Top Notch Donut Places Bottom Up: Programmers Like Networks That Seldom Postpone Anything* Programmers Dare Not Throw Salty Pretzels Away Please Do Not Throw Sausage Pizza Away Please Do Not Tell Sales People Anything People Don’t Need To See Paula Abdul People Desperately Need To See Pamela Anderson Paula Did Networking 'Til She Passed Away * Uses L for Link layer rather than D for Data Link