Computer Networks Lecture 9: Transport Layer and Network Protocols
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Questions and Answers

Which component determines the route taken by packets from the source to the destination in a network?

  • Data plan
  • Control plane
  • Routing (correct)
  • Forwarding
  • In the context of router architecture, which component operates in the nanosecond timeframe?

  • Switching fabric
  • Forwarding data plane (hardware) (correct)
  • Routing control plane (software)
  • Remote controller
  • What is the primary function of the control plane in a router architecture?

  • Bit-level reception
  • Operate in millisecond timeframe
  • Determine route taken by packets
  • Interact with local control plane control agents (correct)
  • What represents the router's high-level view of generic architecture?

    <p>Routing processor</p> Signup and view all the answers

    Which approach involves individual routing algorithm components interacting in each and every router in the control plane?

    <p>Per-router control plane</p> Signup and view all the answers

    What is the specific function of the network layer protocols in every host and router?

    <p>Examine header fields in all IP datagrams</p> Signup and view all the answers

    Which component determines how a datagram arriving on a router input port is forwarded to the output port?

    <p>Control plane</p> Signup and view all the answers

    Which part of the router architecture operates at a high speed and is responsible for moving packets from the input to appropriate output?

    <p>Forwarding data plane (hardware)</p> Signup and view all the answers

    In router architecture, what is responsible for determining how datagrams are routed among routers along the end-to-end path from source host to destination host?

    <p>Network layer protocols</p> Signup and view all the answers

    What function does the input port memory serve in the context of Ethernet decentralized switching?

    <p>Destination-based forwarding</p> Signup and view all the answers

    In the context of Ethernet decentralized switching, which process involves using header field values to look up the output port using a forwarding table in the input port memory?

    <p>Generalized forwarding</p> Signup and view all the answers

    What does 'longest prefix matching' refer to in the context of looking for a forwarding table entry for a given destination address?

    <p>The process of matching the longest address prefix that matches the destination address</p> Signup and view all the answers

    What is the purpose of the switching fabric in Ethernet decentralized switching?

    <p>Transferring packets from input buffer to appropriate output buffer</p> Signup and view all the answers

    In Ethernet decentralized switching, what determines the rate at which packets can be transferred from inputs to outputs?

    <p>Switching rate</p> Signup and view all the answers

    Which process in Ethernet decentralized switching involves transferring packets from the input buffer to the appropriate output buffer?

    <p>Switching fabric transfer</p> Signup and view all the answers

    What is the purpose of using header field values to look up the output port using a forwarding table in the input port memory?

    <p>Implementing generalized forwarding</p> Signup and view all the answers

    What is meant by 'decentralized switching' in the context of Ethernet?

    <p>'Switch and forward' approach where decisions are made independently at each switch</p> Signup and view all the answers

    'Longest prefix matching' is used for what purpose when looking for a forwarding table entry for a given destination address?

    <p>Matching the longest address prefix that matches the destination address</p> Signup and view all the answers

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