1. Introduction to Computer Internship
Unit 1

2. Basic Networking Concepts
Goal: Understand basic concepts and terminology associated with computer networking
Unit 1

3. Network Concepts Outline
Communication Lines
Protocols & Packets
Routing & Bridging
Services
Client Computers & LANs
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4. Basic Terms
Local Area Network (LAN): A computer network limited to the immediate area, usually the same building
Wide Area Network (WAN): A computer network that covers a large geographic area
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5. Who You Should Know
Internet Engineering Task Force (IETF): The Internet “standards” committee
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6. Communication Lines Used to connect you LAN to the world
Typically leased from a telecommunications company
Think of as a “pipe”
Examples include telephone line, ISDN, 56KB, T1, fiber optic
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7. Protocols & Packets
Packets are “chunks of data” that are transmitted on a communication line
Protocols are the languages spoken by a computer on a network
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8. Routing
A router is a device connected between a LAN and a WAN that directs packets to multiple communication lines and devices
“Routing” is the act of directing packets
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9. Servers & Services
A Server is a computer system that performs various operations for the whole network
A Server performs Services such as Web publishing, , filtering, and news.
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10. Client Computers & LANs
Client computers are the desktop systems that users (people) use
They use the network Services
They must be connected to a LAN that can support the desired protocol
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11. Networking Tutorial Working Together
[insert picture here]
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12. You gotta network! Client Client File Server What is a network? Hub
NIC Card
NIC Card
Client
Client
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13. Now, you got two! What do you do?
File
Server
LAN 1
NIC Card
Client
NIC Card
Client
NIC Card
Client
Hub
Hub
Patch Panel
Hub
Hub
Patch Panel
Hub
File
Server
Hub
NIC Card
Client
NIC Card
Client
NIC Card
Client
LAN 2
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14. LAN 1 Router LAN 2 Switch Switch File Server File Server Patch Panel
Hub
Hub
Hub
Hub
Hub
Hub
Client
Client
Client
Client
Client
Client
Unit 1

15. The WAN McDonough T1 Lines LaPlata FS FS FS Internet Switch
Central Office
Router
Hub
OLG
Router FS
McDonough
T1 Lines
Router
LaPlata
Router
Switch
Switch
Switch FS FS FS
Internet
Hub
Hub
Hub
Hub
Hub
Hub
Hub
Hub
Hub
Client
Client
Client
Client
Client
Client
Client
Client
Client
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