Network Fundamentals
© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Version 4.0 Living in a Network Centric World Network Fundamentals – Chapter 1 2 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public Objectives Describe how networks impact our daily lives. Describe the role of data networking in the human network. Identify the key components of any data network. Identify the opportunities and challenges posed by converged networks. Describe the characteristics of network architectures: fault tolerance, scalability, quality of service and security. Install and use IRC clients and a Wiki server. 3 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public How Networks Impact Daily Life Explain the benefits of instantaneous communication and how it supports and improves our lives 4 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public How Networks Impact Daily Life Describe the characteristics and purpose of popular communication media such as, IM, Wikis , Blogs, Podcasting, and Collaboration Tools – 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 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public How Networks Impact Daily Life Explain ways that using information networks to share and collaborate improves teaching and learning 6 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public How Networks Impact Daily Life Describe ways communication over a network changes the way we work 7 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public How Networks Impact Daily Life Describe ways communication over a network supports the way we play 8 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public Data Networking Role, Components, and Challenges Basic characteristics of communication – Rules or agreements are 1 st established – Important information may need to be repeated – Various modes of communication may impact the effectiveness of getting the message across 9 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public Data Networking Role, Components, and Challenges Describe the role of data networking in communications 10 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public Data Networking Role, Components, and Challenges Describe the various elements that make up a network – 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 [...]... rights reserved Cisco Public 7 Network Structure Define network media and criteria for making a network media choice – Network media – this is the channel over which a message travels © 2007 Cisco Systems, Inc All rights reserved Cisco Public 8 Network Types Define Local Area Networks (LANs) – A network serving a home, building or campus is considered a Local Area Network (LAN) © 2007 Cisco Systems,... 3 Network Structure Describe how messages are communicated – Data is sent across a network in small “chunks” called segments © 2007 Cisco Systems, Inc All rights reserved Cisco Public 4 Network Structure Define the components of a network – Network components • Hardware • Software © 2007 Cisco Systems, Inc All rights reserved Cisco Public 5 Network Structure End Devices and their Role in the Network. ..Data Networking Role, Components, and Challenges Describe the role of converged networks in communications – Converged network • A type of network that can carry voice, video & data over the same network © 2007 Cisco Systems, Inc All rights reserved Cisco Public 11 Network Architecture Characteristics Explain four characteristics that are addressed by network architecture design... Cisco Public 9 Network Types Define Wide Area Networks (WANs) – LANs separated by geographic distance are connected by a network known as a Wide Area Network (WAN) © 2007 Cisco Systems, Inc All rights reserved Cisco Public 10 Network Types Define the Internet – The internet is defined as a global mesh of interconnected networks © 2007 Cisco Systems, Inc All rights reserved Cisco Public 11 Network Types... Communicating over the Network Network Fundamentals – Chapter 2 Version 4.0 © 2007 Cisco Systems, Inc All rights reserved Cisco Public 1 Objectives Describe the structure of a network, including the devices and media that are necessary for successful communications Explain the function of protocols in network communications Explain the advantages of using a layered model to describe network functionality... recognized network models: The TCP/IP model and the OSI model Describe the importance of addressing and naming schemes in network communications © 2007 Cisco Systems, Inc All rights reserved Cisco Public 2 Network Structure Define the elements of communication – 3 common elements of communication • Message source • The channel • Message destination Define a network – Data or information networks... human network & communications network – Role of end devices: • Client • Server • Both client and server © 2007 Cisco Systems, Inc All rights reserved Cisco Public 6 Network Structure Identify the role of an intermediary device in a data network and be able to contrast that role with the role of an end device – Role of an intermediary device • Provides connectivity and ensures data flows across network. .. Describe network representations © 2007 Cisco Systems, Inc All rights reserved Cisco Public 12 Function of Protocol in Network Communication The importance of protocols and how they are used to facilitate communication over data networks – A protocol is a set of predetermined rules © 2007 Cisco Systems, Inc All rights reserved Cisco Public 13 Function of Protocol in Network Communication Explain network. .. strategy for a given type of traffic © 2007 Cisco Systems, Inc All rights reserved Cisco Public 17 Network Architecture Characteristics Describe why networks must be secure © 2007 Cisco Systems, Inc All rights reserved Cisco Public 18 Network Architecture Characteristics Describe basic measures to secure data networks – Ensure confidentiality through use of • User authentication • Data encryption – Maintain... 14 Network Architecture Characteristics Explain the factors that necessitate Quality of Service and the mechanisms necessary to ensure it © 2007 Cisco Systems, Inc All rights reserved Cisco Public 15 Network Architecture Characteristics Describe how QoS mechanisms work to ensure quality of service for applications that require it © 2007 Cisco Systems, Inc All rights reserved Cisco Public 16 Network . Version 4.0 Living in a Network Centric World Network Fundamentals – Chapter 1 2 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public Objectives Describe how networks impact our daily. Describe the role of data networking in the human network. Identify the key components of any data network. Identify the opportunities and challenges posed by converged networks. Describe. communications – Converged network • A type of network that can carry voice, video & data over the same network 12 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public Network Architecture