OSPF and RIP Routing Protocols Quiz
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Questions and Answers

What is the primary metric used by RIP to determine the best route?

  • Packet Loss
  • Latency
  • Bandwidth
  • Hop Count (correct)

    • Which UDP port is used for OSPF routing updates?

  • 161
  • 520 (correct)
  • 80
  • 69

    • What does the 'Traceoff' command type signify in RIP messages?

  • Response to a request
  • Request for a table update
  • Obsolete and ignored (correct)
  • Reserved for Sun Microsystems

    • In OSPF, what factor influences neighbor acquisition?

    <p>IP address of the neighbor</p> Signup and view all the answers

    Which network characteristic makes shortest hop count inefficient in multi-hop wireless networks?

    <p>Longest wireless distances</p> Signup and view all the answers

    What is the primary benefit of RIP's dynamic DV routing algorithm?

    <p>Requires less CPU time but more convergence time</p> Signup and view all the answers

    What is the purpose of the Metric field in RIP?

    <p>Measures how 'good' a route is by hop count</p> Signup and view all the answers

    In RIP, what is the significance of the Hold-Down Timer?

    <p>Delays routing table updates for routes with high metrics</p> Signup and view all the answers

    What role does the Update Timer play in RIP?

    <p>Controls the time between routing updates</p> Signup and view all the answers

    How does RIP use the Flush Timer?

    <p>Prevents immediate deletion of routes after timeout</p> Signup and view all the answers

    What is the purpose of the Timeout Timer in RIP?

    <p>Determines when a route is no longer available</p> Signup and view all the answers

    How does RIP utilize the Hold-Down Timer?

    <p>Delays routing table updates for routes with high metrics</p> Signup and view all the answers

    What information does the BGP OPEN message contain?

    <p>Neighbor reachability information</p> Signup and view all the answers

    How does BGP acquire neighbors?

    <p>By exchanging BGP OPEN messages</p> Signup and view all the answers

    What is one of the key functions of a BGP router?

    <p>Propagating route updates between routers</p> Signup and view all the answers

    Which protocol is commonly used for neighbor reachability in a BGP network?

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

    What type of information is shared during BGP route updates?

    <p>Neighbor reachability information</p> Signup and view all the answers

    In the context of BGP, what does 'neighbor acquisition' refer to?

    <p>Establishing connections with neighboring routers</p> Signup and view all the answers

    Study Notes

    RIP (Routing Information Protocol)

    • Version field specifies the RIP version (1 or 2)
    • Address Family ID identifies the addressing protocol (CLNS, IPX, IP, etc.)

    RIP Metrics and Timers

    • Metric measures the "goodness" of a route based on hop count
    • RIP Timers:
      • Update Timer: controls time between routing updates (default = 30 seconds + small random delay)
      • Timeout Timer: determines when a route is no longer available (default = 180 seconds)
      • Flush Timer: controls the interval before a route is deleted (default = 120 seconds)
      • Hold-Down Timer: delays RT updates for a route with a high metric (many hops)

    Cisco Routers and RIP

    • Configuring RIP requires a series of configuration steps
    • RIP is a Distance Vector Routing protocol

    Router Architecture

    • Router Architecture components:
      • Routing Info
      • Routing Update
      • DT (Distance Table) Agent
      • Lookup
      • RT (Routing Table) Update
      • RP (Routing Processor)
    • Router components:
      • Data Processor (DP)
      • Input Ports
      • Output Ports
      • Switch Fabric

    Routing Protocols

    • Routing protocols:
      • Distance Vector Routing
      • Link State Routing
      • RIP
      • OSPF
      • Source Routing
      • BGP
      • Static Routing

    RIP Messages

    • RIP messages encapsulated in UDP payload
    • Command types:
      • Request: requests a partial or full table update from another router
      • Response: response to a request (route updates use this command field)

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    Description

    Test your knowledge on OSPF and RIP routing protocols, including their features, performance, and implementations. Learn about the differences between OSPF and RIP in terms of convergence time, network support, metrics, and efficiency.

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