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76.
Which one of the following commands enables you to verify the current root bridge in VLAN 10?
  • A.
    show root vlan 10
  • B.
    show root-bridge vlan 10
  • C.
    show spanning-tree vlan 10 root
  • D.
    show running-config
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Answer : [C]
Explanation :
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77.
If used, the STP BackboneFast feature should be enabled on which of these?
  • A.
    All backbone or core layer switches
  • B.
    All backbone and distribution layer switches
  • C.
    All access layer switches
  • D.
    All switches in the network
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Answer : [D]
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78.
Where should the STP UplinkFast feature be enabled?
  • A.
    An access layer switch
  • B.
    A distribution layer switch
  • C.
    A core layer switch
  • D.
    All these answers are correct
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Answer : [A]
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79.
Where should the STP PortFast feature be used?
  • A.
    An access layer switch port connected to a PC
  • B.
    An access layer switch port connected to a hub
  • C.
    A distribution layer switch port connected to an access layer switch
  • D.
    A core layer switch port
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Answer : [A]
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80.
What network diameter value is the basis for the default STP timer calculations?
  • A.
    1
  • B.
    3
  • C.
    7
  • D.
    9
  • E.
    15
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Answer : [C]
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