Basic CCNA Cram - Basics EIGRP, RIPv2,OSPF

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Basic CCNA Cram - Basics EIGRP, RIPv2,OSPF
2012-02-05 08:12:36

Basic 101 on facts
Show Answers:

  1. Which port does RIP v2 use?
    Rip v2 uses UDP Port 520
  2. Which IP protocol does EIGRP use?
    Protocol 88
  3. Which protocol does OSPF use?
    OSPF uses IP protocol 89
  4. What is the default hop count of Rip?
  5. What IP address does Rip use for routing updates ?
    Multicast route updates on
  6. What IP address does EIGRP use for routing updates ?
    Multicasts router updates on
  7. What IP address does OSPF use for routing updates ?
    Multicasts rout updates on
  8. What type of routing protocol is RIPv2?
    RIP v2 is a Distance Vector Protocol using hop count as a metric.
  9. What type of routing protocol is EIGRP?
    EIGRP is a Hybrid of Distance Vector and Link-State, Uses feasible successors to determine alternative routes to networks. calculations use topology table.
  10. What type of routing protocol is OSPF?
    OSPF is a SFP protocol using the Dijkstras shortest path algorithm.
  11. What is the default update timer setting of RIPv2?
    30 seconds
  12. What is the default invalid timer setting in RIPv2?
    90 seconds
  13. What is the default Hold Down Timer setting?
    180 seconds
  14. What is the default Flush Timer setting of RIPv2?
    270 seconds
  15. Does RIPv2 support authentication?
  16. Is it true that RIPv2, EIGRP, and OSPF, are all Classless routing protocols?
  17. With OSPF what dictates the 'Router ID' ?
    The highest IP Address or the loopback address if set. Can also be manually configured with ' router-id' command.
  18. What methods address the problem of router loops and counting to infinity?
    • Split Horizon
    • Route Poisoning
    • Hold down timers
    • Triggered updates
  19. What algorithm does RIP use?
    Bellman Ford
  20. Does RIP support IPv6?
    YES RIPng only
  21. Does RIP support VLSM and Route summarization?
    YES; RIPv2 and RIPng Only
  22. Does RIP support Authentication?
    YES; MD5 RIPv2 and RIPng only
  23. What are the OSPF Neighbor States?
    • Down
    • Init or One-Way
    • Two-Way
    • Full
  24. To become Neighbors OSPF routers must agree on what parameters?
    • Area ID
    • Same Subnet
    • Authentication (if used)
    • Hello Interval timer
    • Dead Intervel timer
    • Area type (Stub, NSSA)
    • Router ID must be unique
  25. What is the Broadcast Multi-access period timer on OSPF?
    10 seconds
  26. What is the Point-to-Point and NBMA Timer period?
    30 seconds
  27. What is the OSPF Dead timer default setting?
    4 times the hello timer value
  28. What is the Broadcast timer default for OSPF?
    40 seconds
  29. What is the default NBMA and P2P timer setting?
    120 seconds
  30. how do you change Hello and dead timers setting of OSPF
    • (config-if)# ip ospf hello-interval < seconds >
    • (config-if)# ip ospf dead-interval < seconds >
  31. What does 'Internal' Router Mean ?
    A Router with ALL interfaces residing within the same area.
  32. What does 'Backbone' Router Mean ?
    A Router that resides in the backbone area.
  33. What is an Area Border Router?
    An ABR is a Router that connects two or more areas
  34. What is an Autonomous System Boundary Router (ASBR)?
    An ASBR connects an external router domian to an OSPF routing domian.
  35. What are the OSPF Route types?
    • Intra-Area - in same area
    • Inter-Area - crosses area
    • External - outside OSPF routing Domain
  36. Does EIGRP support authentication?
    YES MD5
  37. Does EIGRP support VLSM and route summary?
  38. What is the make up of the Metric for EIGRP?
    • Bandwidth
    • Load
    • Delay
    • Reliability
    • MTU
  39. What are the update types for EIGRP?
    • Non-Periodic - on change only
    • Partial - only relevant changes
    • Bounded - sent to effecting neighbors