Computer Fundamentals

The Basics

• LAN
• MAN
• SAN
• WAN
• OSI Model

The Basics 2

• Networking terminology
• Networking History

Local Area Network

• computer network that interconnects computers within a limited area
• LIKE,  home, school, and using network media
• Also, computer laboratory, or office buildings

Metropolitan Area Network

• MAN is a large computer network that spans a metropolitan area or campus
• Its geographic scope falls between all networks; LAN and SAN
• MAN connects LAN to SAN and WAN

Storage Area Network

• SAN is a high-speed network of storage devices
• SAN also connects those storage devices with servers

Wide Area Network

• WAN covers a broad area
• Like metropolitan, regional boundaries
• Also, national or international boundaries

OSI/IP Model

Networking Terminology

• Networking Devices
• Networking Topology
• Broadcast/Token Pass
• VPN

Networking Devices

• Networking devices are authentication, authorization, and accounting(AAA)
• which AAA service requests are attempted
• for example, switches, routers, and so on.
• Also, phones, games, laptops, pc, ext.

Networking Topology

• N.T. is the arrangement of the various elements

Broadcast/Token Pass

• A token is passed between nodes that authorizes the node to communicate
• refers to transmitting a packet that will be received by every device 

VPN

• VPN uses a public telecommunication infrastructure
• Provides remote offices or individual users with secure access

Compter History I

• 1977
• Apple creates first microcomputer

Computer History II

• 1981
• IBM's first computer

2000's

• Computer technology is advancing
• It will always grow and expand
• Computer's will consume the world

Technology