Computer Networks Routing Algorithms
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Questions and Answers

What is the primary reason for the adoption of IPv6?

  • To increase the maximum datagram size
  • To increase the address space and eliminate the need for NATs (correct)
  • To provide improved quality of service (QoS) capabilities
  • To allow for fragmentation of datagrams
  • What is the purpose of the 'next header' field in the IPv6 datagram format?

  • To indicate the presence of fragmentation
  • To identify the priority of the datagram
  • To identify the upper-layer protocol for the data (correct)
  • To specify the hop limit for the datagram
  • What is the benefit of tunneling in the transition from IPv4 to IPv6?

  • It increases the security of IPv6 communications
  • It allows IPv6 routers to communicate directly with IPv4 routers
  • It eliminates the need for dual-stack routers
  • It enables IPv6 datagrams to be carried as payload in IPv4 datagrams (correct)
  • What is the role of the routing algorithm in the network layer?

    <p>To determine the end-to-end path through the network</p> Signup and view all the answers

    What is the key question in the graph abstraction of the network?

    <p>What is the least-cost path between two nodes?</p> Signup and view all the answers

    What is the purpose of the 'flow label' field in the IPv6 datagram format?

    <p>To identify the flow of datagrams to which this packet belongs</p> Signup and view all the answers

    What is the benefit of the hierarchical routing approach?

    <p>It increases the scalability of the network</p> Signup and view all the answers

    What is the purpose of the 'hop limit' field in the IPv6 datagram format?

    <p>To specify the maximum number of hops the datagram can take</p> Signup and view all the answers

    What is the difference between intra-AS and inter-AS routing?

    <p>Intra-AS routing is used within an autonomous system, while inter-AS routing is used between autonomous systems</p> Signup and view all the answers

    What is the role of the forwarding table in the network layer?

    <p>To determine the local forwarding at each router</p> Signup and view all the answers

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