Download Living in a Network Centric World

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts

Deep packet inspection wikipedia , lookup

Computer security wikipedia , lookup

Computer network wikipedia , lookup

Piggybacking (Internet access) wikipedia , lookup

Distributed firewall wikipedia , lookup

Recursive InterNetwork Architecture (RINA) wikipedia , lookup

Cracking of wireless networks wikipedia , lookup

Zero-configuration networking wikipedia , lookup

List of wireless community networks by region wikipedia , lookup

Network tap wikipedia , lookup

Airborne Networking wikipedia , lookup

Quality of service wikipedia , lookup

Peer-to-peer wikipedia , lookup

Cisco Systems wikipedia , lookup

Transcript
Living in a Network
Centric World
Network Fundamentals – Chapter 1
Version 4.0
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
1
What we will Learn from chapter 1?

How networks impact daily lives.

The role of data networking in the human network.

The key components data network.

Identify the opportunities and challenges from
converged networks.

About network architectures:
fault tolerance,
scalability
quality of service
security.
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
2
How Networks Impact Daily Life
 Benefits of instantaneous communication
 How it supports and improves our lives
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
3
How Networks Impact Daily Life
Describe purpose of communication media: IM, Wikis ,
Blogs, Podcasting, and Collaboration Tools
– Instant messaging
• Real time communication
based on typed text
– Weblogs (Blogs)
• Web pages
• Podcasting
• audio files available
for downloading
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
4
How Networks Impact Daily Life
 Information networks used to improve teaching and
learning
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
5
How Networks Impact Daily Life
Communication over networks change the way we work
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
6
How Networks Impact Daily Life
 Network support the way we play
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
7
Data Networking Role, Components, and Challenges
 Characteristics of communication
– Rules/agreements are established
– Information may need to be repeated
– Communication modes 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
The role of data networks in communications
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
9
Data Networking Role, Components, and Challenges
 Elements that make up a
network
– Devices
• To communicate with
one another
– Medium
Connects devices
together
– Messages
• Information over
media
– Rules
• Govern how
messages flow across
networks
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
10
Data Networking Role, Components, and Challenges
 Describe the role of converged networks
– Converged network
• Carry data, voice, video & images over the same network
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
11
Network Architecture Characteristics
 Four characteristics 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
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
 Scaling networks to meet user demand
– Hierarchical
– Common standards
– Common protocols
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
14
Network Architecture Characteristics
Quality of Service factors and the mechanisms to ensure
QoS.
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
15
Network Architecture Characteristics
Describe how QoS works.
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
16
Network Architecture Characteristics
 Select the appropriate QoS strategy for a given type of
traffic
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
17
Network Architecture Characteristics
Why secure networks
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
18
Network Architecture Characteristics
 Measures used to secure data networks
– Ensure confidentiality
• User authentication
• Data encryption
– Maintain communication integrity
• Digital signatures
– Ensure availability
• Firewalls
• Redundant network
architecture
• Networks 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
What did I Learn from chapter 2?

How networks impact daily lives.

The role of data networking in the human network.

The key components data network.

Identify the opportunities and challenges from
converged networks.

About network architectures:
fault tolerance,
scalability
quality of service
security.
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
22
Living in a Network Centric World
Next
Communicating over the Network
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
23