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Living in a Network
Centric World

Network Fundamentals – Chapter 1

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

1
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.

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

2
How Networks Impact Daily Life
 Explain the benefits of instantaneous communication
and how it supports and improves our lives.

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

3
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
© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

4
How Networks Impact Daily Life
 Explain ways that using information networks to share
and collaborate improves teaching and learning

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

5
How Networks Impact Daily Life
 Describe ways communication over a network changes
the way we work

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

6
How Networks Impact Daily Life
 Describe ways communication over a network supports
the way we play

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

7
Data Networking Role, Components, and
Challenges
 Basic characteristics of communication
–Rules or agreements are 1st established
–Important information may need to be repeated
–Various modes of communication may impact the
effectiveness of getting the message across.

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

8
Data Networking Role, Components, and
Challenges
 Describe the role of data networking in communications

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

9
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
© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

10
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
–Fault tolerance
–Scalability
–Quality of service
–Security

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

12
Network Architecture Characteristics
 Describe how packet switching helps improve the
resiliency and fault tolerance of the Internet architecture

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

13
Network Architecture Characteristics
 Describe characteristics of the Internet that help it scale
to meet user demand
–Hierarchical
–Common standards
–Common protocols

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

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 Architecture Characteristics
 Describe how to select the appropriate QoS 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 communication integrity through use of
•Digital signatures
–Ensure availability through use of
•Firewalls
•Redundant network
architecture
•Hardware without a single
point of failure
© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

19
IRC Clients and Wiki Server
 Install and use IRC clients and a Wiki server

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

20
Summary

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

21
© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

22

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Exploration network

  • 1. Living in a Network Centric World Network Fundamentals – Chapter 1 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1
  • 2. 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. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 2
  • 3. How Networks Impact Daily Life  Explain the benefits of instantaneous communication and how it supports and improves our lives. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 3
  • 4. 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 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 4
  • 5. How Networks Impact Daily Life  Explain ways that using information networks to share and collaborate improves teaching and learning © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 5
  • 6. How Networks Impact Daily Life  Describe ways communication over a network changes the way we work © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 6
  • 7. How Networks Impact Daily Life  Describe ways communication over a network supports the way we play © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 7
  • 8. Data Networking Role, Components, and Challenges  Basic characteristics of communication –Rules or agreements are 1st established –Important information may need to be repeated –Various modes of communication may impact the effectiveness of getting the message across. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 8
  • 9. Data Networking Role, Components, and Challenges  Describe the role of data networking in communications © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 9
  • 10. 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 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 10
  • 11. 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
  • 12. Network Architecture Characteristics  Explain four characteristics that are addressed by network architecture design –Fault tolerance –Scalability –Quality of service –Security © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 12
  • 13. Network Architecture Characteristics  Describe how packet switching helps improve the resiliency and fault tolerance of the Internet architecture © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 13
  • 14. Network Architecture Characteristics  Describe characteristics of the Internet that help it scale to meet user demand –Hierarchical –Common standards –Common protocols © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 14
  • 15. 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
  • 16. 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
  • 17. Network Architecture Characteristics  Describe how to select the appropriate QoS strategy for a given type of traffic © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 17
  • 18. Network Architecture Characteristics  Describe why networks must be secure © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 18
  • 19. Network Architecture Characteristics  Describe 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 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 19
  • 20. IRC Clients and Wiki Server  Install and use IRC clients and a Wiki server © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 20
  • 21. Summary © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 21
  • 22. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 22