week 1 sessions 1-3 slides 1-16 introduction to computer networking
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Computer Networks
* Property of STIPage 1 of 16
Introduction to Computer Networking
Computer Networks
m interconnection of two or more computers and/or devices over a certain medium
m Computer can either be:v Serversv Clients
m Devices can be:v Printersv Connectivity devices – routers, switches,
hubs
m Data Communications, on the other hand, is the interconnection of electronic devicesv These devices are not necessarily involving
computersv Information exchange is in the form of
digital data
Computer Networks
* Property of STIPage 2 of 16
Introduction to Computer Networking
Typical Computer Network
Computer Networks
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Introduction to Computer Networking
Why Network Computers?
Essentially to save on time, effort and money, resulting to:
m Reduced need to move aroundm Elimination of redundant peripheralsm Working on a paperless environmentm Increase in securitym Increase in productivity
Computer Networks
* Property of STIPage 4 of 16
Introduction to Computer Networking
Why Network Computers?
Primarily because of globalization. It simply means that the world is smaller because of the Internet:
The Internet Domain Growth
Computer Networks
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Introduction to Computer Networking
Why Network Computers?
Global Count: How many are On-line:
Computer Networks
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Introduction to Computer Networking
Computer Networks in the 50’s
m Mainframe System Setup
Computer Networks
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Introduction to Computer Networking
Computer Networks in the 60’s
m On-line Computing Setup
Computer Networks
* Property of STIPage 8 of 16
Introduction to Computer Networking
Computer Networks in the 70’s
m Minicomputers replacing Mainframesv Minis are smaller (only in physical
dimensions) than mainframesv Minis still serve as host/central computer
m The development and launch of Microcomputersv More popularly known as the Personal
Computer (PC)
Computer Networks
* Property of STIPage 9 of 16
Introduction to Computer Networking
LAN’s in the 80’s
m Early LAN Implementations
Computer Networks
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Introduction to Computer Networking
WAN’s in the 80’s
m Early WAN Setup
Computer Networks
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Introduction to Computer Networking
Internetworking in the 90’s
Computer Networks
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Introduction to Computer Networking
The Original Internet
Computer Networks
* Property of STIPage 13 of 16
Introduction to Computer Networking
Changes in the Industry
m Client-Server environmentv Distribution of server load to client
terminalsm Multimedia has become mainstream
v Graphicsv Video combines with audio
m More options for high-speed transferv Fiber Optic technologyv Mature Satellite technology
m Convergencev Multi-services over a single technology
platform
Computer Networks
* Property of STIPage 14 of 16
Introduction to Computer Networking
Convergence
m The industry trend of having a single infrastructure being able to carry various servicesv VOICEv VIDEOv DATA
Computer Networks
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Introduction to Computer Networking
Parts of a Computer Network
m Network Servers + Network Resourcesv Provide network services and resources
m Network Clientsv User interfaces to the computer network
m Connectivity devicesv Hubs: expand network length/distancev Switches: regulate network traffic v Routers: facilitate connection to other
networks
Computer Networks
* Property of STIPage 16 of 16
Introduction to Computer Networking
Computer Network Makeup