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Exploration network chapter2
1.
Communicating over the Network Network
Fundamentals â Chapter 2 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1
2.
Objectives ï§ Describe the structure
of a network, including the devices and media that are necessary for successful communications. ï§ Explain the function of protocols in network communications. ï§ Explain the advantages of using a layered model to describe network functionality. ï§ Describe the role of each layer in two recognized network models: The TCP/IP model and the OSI model. ï§ Describe the importance of addressing and naming schemes in network communications. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 2
3.
Network Structure ï§ Define
the elements of communication â3 common elements of communication âą message source âą the channel âą message destination ï§ Define a network data or information networks capable of carrying many different types of communications © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 3
4.
Network Structure ï§ Describe
how messages are communicated Data is sent across a network in small âchunksâ called segments © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 4
5.
Network Structure ï§ Define
the components of a network âNetwork components âą hardware âą software © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 5
6.
Network Structure ï§ End
Devices and their Role in the Network âEnd devices form interface with human network & communications network âRole of end devices: âą client âą server âą both client and server © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 6
7.
Network Structure ï§ 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 âRole of an intermediary device âą provides connectivity and ensures data flows across network © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 7
8.
Network Structure ï§ 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
9.
Network Types ï§ Define
Local Area Networks (LANs) - A network serving a home, building or campus is considered a Local Area Network (LAN) © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 9
10.
Network Types ï§ 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
11.
Network Types ï§ Define
the Internet The internet is defined as a global mesh of interconnected networks © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 11
12.
Network Types ï§ Describe
network representations © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 12
13.
Function of Protocol
in Network Communication ï§ 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
14.
Function of Protocol
in Network Communication ï§ Explain network protocols Network protocols are used to allow devices to communicate successfully © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 14
15.
Function of Protocol
in Network Communication ï§ Describe Protocol suites and industry standards A standard is a process or protocol that has been endorsed by the networking industry and ratified by a standards organization © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 15
16.
Function of Protocol
in Network Communication ï§ Define different protocols and how they interact © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 16
17.
Function of Protocol
in Network Communication ï§ Technology independent Protocols -Many diverse types of devices can communicate using the same sets of protocols. This is because protocols specify network functionality, not the underlying technology to support this functionality. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 17
18.
Layers with TCP/IP
and OSI Model ï§ Explain the benefits of using a layered model âBenefits include âą assists in protocol design âą fosters competition âą changes in one layer do not affect other layers âą provides a common language © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 18
19.
Layers with TCP/IP
and OSI Model ï§ Describe TCP/IP Mode © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 19
20.
Layers with TCP/IP
and OSI Model ï§ Describe the Communication Process © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 20
21.
Layers with TCP/IP
and OSI Model ï§ Explain protocol data units (PDU) and encapsulation © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 21
22.
Layers with TCP/IP
and OSI Model ï§ Describe the process of sending and receiving messages © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 22
23.
Layers with TCP/IP
and OSI Model ï§ Explain protocol and reference models A protocol model provides a model that closely matches the structure of a particular protocol suite. A reference model provides a common reference for maintaining consistency within all types of network protocols and services. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 23
24.
Layers with TCP/IP
and OSI Model ï§ Define OSI © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 24
25.
Layers with TCP/IP
and OSI Model ï§ Compare OSI and TCP/IP model © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 25
26.
Addressing and Naming
Schemes ï§ Explain how labels in encapsulation headers are used to manage communication in data networks © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 26
27.
Addressing and Naming
Schemes ï§ Describe examples of Ethernet MAC Addresses, IP Addresses, and TCP/UDP Port numbers © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 27
28.
Addressing and Naming
Schemes ï§ Explain how labels in encapsulation headers are used to manage communication in data networks © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 28
29.
Addressing and Naming
Schemes ï§ Describe how information in the encapsulation header is used to identify the source and destination processes for data communication © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 29
30.
Summary © 2007 Cisco
Systems, Inc. All rights reserved. Cisco Public 30
31.
© 2007 Cisco
Systems, Inc. All rights reserved. Cisco Public 31
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