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Routing Protocols: RIP, EIGRP, OSPF, and IS-IS
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Routing Protocols: RIP, EIGRP, OSPF, and IS-IS

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Questions and Answers

What is the primary advantage of IGRP over RIP?

  • IGRP has a maximum hop count of 15
  • IGRP is more secure than RIP
  • IGRP broadcasts updates every 90 seconds
  • IGRP has no maximum hop count limitation (correct)
  • What is a major limitation of RIP?

  • It is not suitable for larger networks
  • It is not secure
  • It has a maximum hop count of 15 (correct)
  • It does not support subnet masks
  • What is a key difference between RIPv1 and RIPv2?

  • RIPv2 is only used in WANs
  • RIPv2 is less secure than RIPv1
  • RIPv2 uses a multicast address (correct)
  • RIPv2 has a higher maximum hop count
  • What is a common characteristic of RIP, IGRP, OSPF, and IS-IS?

    <p>They all include subnet mask information within updates</p> Signup and view all the answers

    What is a benefit of using IGRP over RIP in larger networks?

    <p>IGRP can sustain larger networks than RIP</p> Signup and view all the answers

    What is a key feature of IGRP that helps prevent routing loops?

    <p>It updates itself automatically when route changes occur</p> Signup and view all the answers

    What is the layer of the OSI model on which RIP operates?

    <p>Application layer</p> Signup and view all the answers

    What is a characteristic of RIPv2 that is not present in RIPv1?

    <p>Authentication</p> Signup and view all the answers

    What is the primary goal of the RIP protocol when choosing routing paths?

    <p>To minimize the number of hops a packet travels</p> Signup and view all the answers

    Which metric is used to assess the likelihood that a network link will fail?

    <p>Reliability</p> Signup and view all the answers

    What is the purpose of the 'cost' metric in IP routing protocols?

    <p>To configure a value by the administrator or IOS to measure the cost of a route</p> Signup and view all the answers

    Which routing protocol uses hop count as a metric to measure the distance to a destination?

    <p>RIP</p> Signup and view all the answers

    What is the purpose of the 'load' metric in IP routing protocols?

    <p>To choose the routing path based on the traffic utilization of connected links</p> Signup and view all the answers

    What is the main advantage of using metrics in IP routing protocols?

    <p>To allow the protocol to determine which routing path should be chosen to provide the best service to the network</p> Signup and view all the answers

    Which protocol is used to compensate for the lack of error-reporting and error-correcting mechanisms in IPv4?

    <p>ICMPv4</p> Signup and view all the answers

    What is the purpose of the Internet Group Management Protocol (IGMP)?

    <p>To collect information about group membership</p> Signup and view all the answers

    What is the primary function of the Address Resolution Protocol (ARP)?

    <p>To map dynamic IP addresses to permanent physical machine addresses</p> Signup and view all the answers

    At which layer of the OSI model does ARP operate?

    <p>Between Layer 2 and Layer 3</p> Signup and view all the answers

    What is the value of the protocol field in the IP datagram when it encapsulates an ICMP message?

    <p>1</p> Signup and view all the answers

    Which protocol is not mentioned in the text as an auxiliary protocol to IP?

    <p>RIP</p> Signup and view all the answers

    What is the length of the IP addresses in IPv4?

    <p>32 bits</p> Signup and view all the answers

    What is the length of the MAC addresses mentioned in the text?

    <p>48 bits</p> Signup and view all the answers

    Study Notes

    Routing Protocols

    • RIP (Routing Information Protocol) is one of the first routing protocols, used in LANs and WANs, and runs on the Application layer of the OSI model.
    • RIPv1 determines network paths based on IP destination and hop count, broadcasting its IP table to all routers connected to the network.
    • RIPv2 is more sophisticated, sending its routing table to a multicast address, using authentication for security, and choosing a subnet mask and gateway for future traffic.
    • RIPv2 has a maximum hop count of 15, making it unsuitable for larger networks.

    IGRP

    • IGRP (Interior Gateway Protocol) is a distance vector routing protocol produced by Cisco, building on RIP's foundations to function more effectively in larger networks.
    • IGRP uses metrics like bandwidth, delay, reliability, and load to compare route viability, with bandwidth and delay used under default settings.
    • IGRP is ideal for larger networks, broadcasting updates every 90 seconds, and has a maximum hop count of 255.
    • IGRP is resistant to routing loops, updating itself automatically when route changes occur.

    Routing Metrics

    • Hop count measures the number of routers a packet must travel through, with the goal of minimizing hops.
    • Other metrics used include bandwidth, delay, reliability, cost, and load.

    ICMPv4

    • ICMPv4 (Internet Control Message Protocol version 4) is a companion to IP, compensating for IP's lack of error-reporting and error-correcting mechanisms.
    • ICMPv4 provides a mechanism for host and management queries, allowing hosts to determine if a router or another host is alive.

    IGMP

    • IGMP (Internet Group Management Protocol) is used for collecting information about group membership, defined at the network layer.
    • IGMP messages are encapsulated in IP datagrams, like ICMP messages.

    ARP

    • ARP (Address Resolution Protocol) maps dynamic IP addresses to permanent physical machine addresses in a LAN.
    • ARP translates 32-bit IP addresses to 48-bit MAC addresses and vice versa.

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    Description

    This quiz covers different types of routing protocols, including RIP, EIGRP, OSPF, and IS-IS, and their characteristics. Learn about the features and versions of these protocols, including RIPv1 and RIPv2.

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