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121.
Which three of the following are reasons why an OSPF neighbor relationship will not form?
  • A.
    Mismatched timers
  • B.
    Mismatched area numbers
  • C.
    Duplicate router IDs
  • D.
    Wrong designated router was elected
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Answer : [A, B and C]
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122.
In which two OSPF states are you likely to find routers that have an MTU mismatch?
  • A.
    Init
  • B.
    2Way
  • C.
    Exstart
  • D.
    Exchange
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Answer : [C], [D]
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123.
Which OSPFv2 command enables you to verify the hello interval and the dead interval?
  • A.
    show ip protocols
  • B.
    show ip ospf interface
  • C.
    show ip ospf neighbor
  • D.
    show ip ospf database
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Answer : [B]
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124.
Which OSPFv2 debug command enables you to verify whether area numbers are mismatched?
  • A.
    debug ip ospf hello
  • B.
    debug ip ospf adj
  • C.
    debug ip ospf packet
  • D.
    debug ip ospf events
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Answer : [B]
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125.
Which OSPF network type is the default on LAN interfaces?
  • A.
    Broadcast
  • B.
    NBMA
  • C.
    Point to point
  • D.
    Point to multipoint
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Answer : [A]
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