computer radiology

• Computer Networks


  A group of two or more computers linked together
• Basic Network Components


  • Server
  • Client
  • Media
  • Network Adopter
  • Resources
  • User
  • Protocols

  
• Local Area Network (LAN)


  • Connects network devices over a relatively short distance
• Wide Area Network (WAN)


  • Provides long distance transmission of data, voice, image, and video information over large geographical areas
• Peer to Peer (P2P) network architecture


  • Each party has the same capabilities and any party can initiate communication

  
• Client-Server network architecture


  • Computers are classified as either server or clients

  
• Types of Computer Network Topology


  • Point to Point
  • Mesh
  • Star
  • Bus
  • Ring
  • Tree
  • Hybrid

  
• Network Bandwidth


  The amount of data that can be transmitted between 2 points in the network in a set period of time, commonly expressed in bits per second
• Internet


  A global system of interconnected computer networks that use the standard internet protocol suite (TCP/IP) to serve several billion users worldwide
• Basic Applications of the Internet


  • Communication
  • Job Searches
  • Finding books and study material
  • Health and medicine
  • Travel
  • Entertainment
  • Shopping
  • Stock market updates
  • Research
• TCP/IP Applications


  The highest-level protocols within the TCP/IP protocol stack that communicate with applications on other internet hosts and are the user-visible interface to the TCP/IP protocol suite
• Components for getting connected to the Internet


  • Computer
  • Modem (dial-up, DSL, cable)
  • Internet Service Provider (ISP)
  • Web Browser/Internet Browser software
• BASIC PRINCIPLES IN COMPUTER RADIOLOGY


  • COMMUNICATION
  • USING
  • THE
  • INTERNET
  • NETWORK FUNDAMENTALS
• Computer Networks


  A group of two or more computers linked together

  
• Basic Network Components

  • Server
  • Client
  • Media
  • Network Adopter
  • Resources
  • User
  • Protocols

  
• BASIC TYPES OF COMPUTER NETWORKS


  • Local Area Network (LAN)
  • Wide Area Network (WAN)
• Local Area Network (LAN)


  Connects network devices over a relatively short distance
• Wide Area Network (WAN)


  Provides long distance transmission of data, voice, image, and video information over large geographical areas
• 2 Types of Computer Network Architecture

  • Peer to Peer (P2P)
  • Client – Server Architecture

  
• Peer to Peer (P2P)


  Each party has the same capabilities and any party can initiate communication
• Client – Server Architecture


  Computers in this model are either classified as server or clients
• Node


  Each client or server in the network may also be referred to as node
• Types of Computer Topology

  • Point to Point
  • Mesh Topology
  • Star Topology
  • Bus Topology
  • Ring Topology
  • Tree Topology
  • Hybrid Topology

  
• Network Bandwidth


  The amount of data can be transmitted between 2 points in the network in a set period of time
• Network Bandwidth


  Commonly expressed in bits per second
• Internet


  A global system of interconnected computer networks that use the standard internet protocol suite (TCP/IP) to serve several billion users worldwide
• Basic Application of Internet

  • Communication
  • Job Searches
  • Finding books and study material
  • Health and medicine
  • Travel
  • Entertainment
  • Shopping
  • Stock market updates
  • Research
• TCP/IP Applications


  The highest-level protocols within the TCP/IP protocol stack are Application Protocols. They communicate with applications on other internet hosts and are the user-visible interface to the TCP/IP protocol suite
• TCP/IP Applications

  • telnet
  • file transfer protocol (FTP)
  • simple mail transfer protocol (SMTP)
• 4 main components to getting connected to the Internet

  • Computer
  • Modem – dial-up, DSL, cable
  • Internet Service Provider (ISP)
  • Software
• Web Browser/Internet Browser


  A software application for retrieving, presenting, and traversing information resources on the World Wide Web
• 3 common types of modem connections

  • Dial-up
  • DSL
  • Cable