Transport-Layer Services
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Transport-Layer Services

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Questions and Answers

Where are transport-layer protocols implemented?

  • In the application layer
  • In network routers
  • In both end systems and network routers
  • In the end systems (correct)
  • What does the transport layer do on the sending side?

  • Extracts the transport-layer segment from the datagram
  • Converts application messages into transport-layer segments (correct)
  • Converts transport-layer segments into application messages
  • Passes the segment to the network-layer packet
  • What does the network layer do on the receiving side?

  • Converts application messages into transport-layer segments
  • Processes the received segment
  • Adds a transport-layer header to each chunk
  • Extracts the transport-layer segment from the datagram (correct)
  • What is the primary function of a transport-layer protocol?

    <p>Provides logical communication between application processes on different hosts</p> Signup and view all the answers

    Where is logical communication provided by the transport layer used?

    <p>To send messages between application processes on different hosts</p> Signup and view all the answers

    Explain the role of a transport-layer protocol in providing logical communication between application processes on different hosts.

    <p>The transport-layer protocol provides logical communication between application processes running on different hosts, allowing them to send messages to each other without worrying about the physical infrastructure details.</p> Signup and view all the answers

    What are transport-layer packets known as and how are they created?

    <p>Transport-layer packets are known as transport-layer segments and are created by breaking application messages into smaller chunks and adding a transport-layer header to each chunk.</p> Signup and view all the answers

    Where are transport-layer protocols implemented?

    <p>Transport-layer protocols are implemented in the end systems but not in network routers.</p> Signup and view all the answers

    Explain the relationship between transport-layer protocol and network-layer protocol.

    <p>A transport-layer protocol provides logical communication between processes running on different hosts, while a network-layer protocol provides logical communication between hosts.</p> Signup and view all the answers

    What is the role of the network layer on the receiving side?

    <p>On the receiving side, the network layer extracts the transport-layer segment from the datagram and passes the segment up to the transport-layer for further processing.</p> Signup and view all the answers

    Study Notes

    • Transport-layer protocols facilitate logical communication between application processes running on different hosts
    • Application processes use the transport layer for sending messages to each other, abstracted from physical infrastructure details
    • Transport-layer protocols are implemented in end systems, not network routers
    • Sending side: transport-layer breaks application messages into segments, adds header and passes to network layer
    • Receiving side: network layer extracts transport-layer segment, passes to transport-layer for processing and data availability to application
    • Transport-layer and network-layer: transport-layer handles process communication, network-layer handles host communication.

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    Description

    Test your knowledge of the logical communication and services provided by transport-layer protocols for application processes running on different hosts.

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