Network Fundamentals - Chapter 1 PDF

Living in a Network Centric World Network Fundamentals – Chapter 1 Version 4.0 How Networks Impact Daily Life How Networks Impact Daily Life  Data Networking: Components and Challenges – Devices These are used to communicate with one another – Medium...

Living in a Network Centric World Network Fundamentals – Chapter 1 Version 4.0 How Networks Impact Daily Life How Networks Impact Daily Life  Data Networking: Components and Challenges – Devices These are used to communicate with one another – Medium This is how the devices are connected together – Messages Information that travels over the medium – Rules Governs how messages flow across network  Data Networking Role: Components and Challenges Converged network A type of network that can carry voice, video & data over the same network Network Architecture Characteristics – Fault tolerance – Scalability – Quality of service – Security Network Architecture Characteristics Fault tolerance Network Architecture Characteristics Scalability: characteristics of the network that help it scale to meet user demand – Hierarchical – Common standards – Common protocols Network Architecture Characteristics QoS: how to select the appropriate QoS strategy for a given type of traffic Network Architecture Characteristics Network Architecture Characteristics Networks must be secure  Network Architecture Characteristics Basic measures to secure data networks – Ensure confidentiality through use of 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