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Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
Exploration network chapter4
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Exploration network chapter4

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  • 1. OSI Transport Layer Network Fundamentals – Chapter 4 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1
  • 2. Objectives  Explain the role of Transport Layer protocols and services in supporting communications across data networks  Analyze the application and operation of TCP mechanisms that support reliability  Analyze the application and operation of TCP mechanisms that support reassembly and manage data loss.  Analyze the operation of UDP to support communicate between two processes on end devices © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 2
  • 3. Transport Layer Role and Services  Explain the purpose of the Transport layer © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 3
  • 4. Transport Layer Role and Services  Major functions of the transport layer and the role it plays in data networks © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 4
  • 5. Transport Layer Role and Services  Supporting Reliable Communication © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 5
  • 6. Transport Layer Role and Services  Identify the basic characteristics of the UDP and TCP protocols © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 6
  • 7. Transport Layer Role and Services  Identify how a port number is represented and describe the role port numbers play in the TCP and UDP protocols. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 7
  • 8. Transport Layer Role and Services  Describe the role of segments in the transport layer and the two principle ways segments can be marked for reassembly. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 8
  • 9. Application and Operation of TCP Mechanisms  Trace the steps that show how the TCP reliability mechanism works as part of a session © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 9
  • 10. Application and Operation of TCP Mechanisms  Describe the role of port numbers in establishing TCP sessions and directing segments to server process © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 10
  • 11. Application and Operation of TCP Mechanisms  Trace the steps in the handshake in the establishment of TCP sessions © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 11
  • 12. Application and Operation of TCP Mechanisms  Trace the steps in the handshake in the termination of TCP sessions © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 12
  • 13. Managing TCP Sessions  Describe how TCP sequence numbers are used to reconstruct the data stream with segments placed in the correct order © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 13
  • 14. Managing TCP Sessions  Trace the steps used by the TCP protocol in which sequence numbers and acknowledgement numbers are used to manage exchanges in a conversation © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 14
  • 15. Managing TCP Sessions  Describe the retransmission.remedy for lost data employed by TCP © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 15
  • 16. Managing TCP Sessions  Describe the mechanisms in TCP that manage the interrelationship between window size, data loss and congestion during a session © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 16
  • 17. UDP Protocol  Describe the characteristics of the UDP protocol and the types of communication for which it is best suited © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 17
  • 18. UDP Protocol  Describe in detail the process specified by the UDP protocol to reassemble PDUs at the destination device © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 18
  • 19. UDP Protocol  Describe how servers use port numbers to identify a specified application layer process and direct segments to the proper service or application © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 19
  • 20. UDP Protocol  Trace the steps as the UDP protocol and port numbers are utilized in client-server communication. © 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

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