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Living in a Network Centric World

Living in a Network Centric World. Network Fundamentals – Chapter 1. Objectives. H ow networks impact daily li fe R ole of data networking in the human network K ey components of any data network O pportunities and challenges of converged networks

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Living in a Network Centric World

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  1. Living in a Network Centric World Network Fundamentals – Chapter 1

  2. Objectives • How networks impact daily life • Role of data networking in the human network • Key components of any data network • Opportunities and challenges of converged networks • Characteristics of network architectures: • fault tolerance • scalability • quality of service • security • Installing and using IRC clients and a Wiki server

  3. How Networks Impact Daily Life • Benefits of instantaneous communication

  4. How Networks Impact Daily Life • Characteristics and purpose of communication media • Instant messaging • Real time communication • between 2 or more • people based on typed text • Weblogs (Blogs) • Web pages created • by an individual • Podcasting • Website that contains • audio files available • for downloading

  5. How Networks Impact Daily Life • Information networks improve teaching and learning

  6. How Networks Impact Daily Life • Networks change the way we work

  7. How Networks Impact Daily Life • Networks support the way we play

  8. Networking: Role, Components, and Challenges • Characteristics of communication • Rules or agreements are 1st established • Important information may need to be repeated • Modes of communication are important

  9. Networking: Role, Components, and Challenges • Elements of a network • Devices • Communicate with each other • Medium • Connects devices together • Messages • Information • Rules • How messages flow

  10. Networking: Role, Components, and Challenges Converged networks in communications • Converged network: A network that can carry • voice • video • data • over the same network

  11. Network Architecture Characteristics Four characteristics of network architecture design • Fault tolerance • Scalability • Quality of service • Security

  12. Network Architecture Characteristics • Packet switching

  13. Network Architecture Characteristics • Characteristics of the Internet • Hierarchical • Common standards • Common protocols

  14. Network Architecture Characteristics • Quality of Service

  15. Network Architecture Characteristics • QoS mechanisms

  16. Network Architecture Characteristics • QoS strategies

  17. Network Architecture Characteristics • Networks must be secure

  18. Network Architecture Characteristics • Measures to secure data networks • Ensure confidentiality through • User authentication • Data encryption • Maintain communication integrity through use of • Digital signatures • Ensure availability through use of • Firewalls • Redundant network architecture • Hardware without a single • point of failure

  19. IRC Clients and Wiki Server • Install and use IRC clients and a Wiki server

  20. Summary

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