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934 Ch1 Networks

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Introduction to Computer Networks ,[object Object],[object Object],[object Object],[object Object],[object Object],Computer Networks
What is a Network? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Computer Networks
Computer Networks Network Classification ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks Network Hardware ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks Network Software ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks Design Issues for the Layers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks Connection Oriented /Less Services ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks Service Primitives A service is formally specified by a set of primitives ( operations) available to a user process to access the service. Send a message to the peer SEND Terminate a Connection DISCONNECT Block waiting for an incoming message RECEIVE Establish a connection with a waiting peer CONNECT Block waiting for an incoming connection LISTEN Meaning Primitive
Computer Networks Client Machine Server Machine 1)Connection Request 2)ACK 3)Request for Data 4)Reply 5)Disconnect 6)Disconnect How communication takes place?
Computer Networks Services & Protocols ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks OSI Reference Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks Layers in OSI
Computer Networks Layers in OSI
Computer Networks The Application Layer ,[object Object],[object Object],[object Object],[object Object]
Computer Networks The Presentation Layer ,[object Object],[object Object],[object Object],[object Object]
Computer Networks The Session Layer ,[object Object],[object Object],[object Object],[object Object]
Computer Networks The Transport Layer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks The Transport Layer ( Cont…) ,[object Object],[object Object],[object Object]
Computer Networks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The Transport Layer ( Cont…)
Computer Networks Windowing: The quantity of data segments (in bytes) that the transmitting machine is allowed to send without receiving an acknowledgement for them is called window. Acknowledgments: Non-duplication of data is achieved through positive acknowledgement with re transmission. The sender documents each segment it sends and waits for this acknowledgement before sending the next segment. It starts a timer and retransmits if it expires before an acknowledgement is returned from receiving end. The Transport Layer ( Cont…)
Computer Networks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The Network Layer
Computer Networks The Network Layer ( Cont…)
Computer Networks The Data Link Layer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks The Physical Layer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks The TCP/IP Model
Computer Networks The TCP/IP Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks The Process/Application Layer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks The Host-to-Host Layer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computer Networks The Host to Host Layer TCP/IP Segment Format
Computer Networks The Host-to-Host Layer ,[object Object],[object Object],[object Object]
Computer Networks The Host-to-Host Layer The Internet Layer
Computer Networks The Network Layer ,[object Object],Comparison Of OSI & TCP/IP ,[object Object],[object Object],[object Object],[object Object]

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934 Ch1 Networks

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  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11. Computer Networks Service Primitives A service is formally specified by a set of primitives ( operations) available to a user process to access the service. Send a message to the peer SEND Terminate a Connection DISCONNECT Block waiting for an incoming message RECEIVE Establish a connection with a waiting peer CONNECT Block waiting for an incoming connection LISTEN Meaning Primitive
  • 12. Computer Networks Client Machine Server Machine 1)Connection Request 2)ACK 3)Request for Data 4)Reply 5)Disconnect 6)Disconnect How communication takes place?
  • 13.
  • 14.
  • 17.
  • 18.
  • 19.
  • 20.
  • 21.
  • 22.
  • 23. Computer Networks Windowing: The quantity of data segments (in bytes) that the transmitting machine is allowed to send without receiving an acknowledgement for them is called window. Acknowledgments: Non-duplication of data is achieved through positive acknowledgement with re transmission. The sender documents each segment it sends and waits for this acknowledgement before sending the next segment. It starts a timer and retransmits if it expires before an acknowledgement is returned from receiving end. The Transport Layer ( Cont…)
  • 24.
  • 25. Computer Networks The Network Layer ( Cont…)
  • 26.
  • 27.
  • 28. Computer Networks The TCP/IP Model
  • 29.
  • 30.
  • 31.
  • 32. Computer Networks The Host to Host Layer TCP/IP Segment Format
  • 33.
  • 34. Computer Networks The Host-to-Host Layer The Internet Layer
  • 35.