CNIT 133

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CNIT 133

• Introduction
• Computer Basics
• Network Architecture
• Local Area Network (LAN)
• Wide Area Network (WAN)
• Internet

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Introduction

• Syllabus
• Schedule
• My web site http//fog.ccsf.edu/hyip

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Computer Basics
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Computer Basics A single Computer (PC)
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Network Architecture

• Client/Server Architecture (two-tier
  architecture) each computer on the network is
  either a client or a server (some computers can
  be both client and server but not at the same
  time).
• Dedicated Servers such as file servers
  (managing disk drives), print servers (managing
  printers), network servers (managing network
  traffic).
• A client is defined as a requester of services.
• A server is defined as the provider of services.
• Peer-to-peer Architecture (P2P) each computer on
  the network has equivalent capabilities and
  responsibilities.

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Network Architecture Client/Server
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Local Area Network (LAN)

• A Local Area Network (LAN) is a group of
  computers and devices that share a common
  communications line or wireless link and
  typically share the resources of a server within
  a small geographic area (for example, within an
  office building).

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Wide Area Network (WAN)

• A Wide Area Network (WAN) is a computer network
  covering a wide geographical area, involving a
  lot more computers. This is different from Local
  Area Network (LAN) that is usually limited to a
  room, building or campus. The most well-known
  example of a WAN is the Internet.
• WANs are used to connect Local Area Networks
  (LANs) together.