單項(xiàng)選擇題Which command enables RSTP on a switch?()

A. spanning-tree mode rapid-pvst
B. spanning-tree uplinkfast
C. spanning-tree backbonefast
D. spanning-tree mode mst


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A. they run a spell check on host names to ensure accurate routing
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2.單項(xiàng)選擇題There are no boot system commands in a router configuration in NVRAM.What is the fallback sequence that router will use to find an ios during reload?()

A. Flash,TFTP server,ROM
B. Flash,NVRAM,ROM
C. ROM,NVRAM,TFTP server
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3.單項(xiàng)選擇題Which command shows your active Telnet connections?()

A. show session
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4.單項(xiàng)選擇題Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols?()

A. transport type all
B. transport output all
C. transport preferred all
D. transport input all

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A network administrator is trying to add a new router into an established OSPF network.The networks attached to the new router do not appear in the routing tables of the other OSPF routers.Given the information in the partial configuration shown below,what configuration error is causing this problem?()Router(config)#router ospf 1Router(config-router)#network 10.0.0.0 255.0.0.0 area 0

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Which statement describes the rule of split horizon?()

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Which pairing reflects a correct protocol-and-metric relationship?()

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Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?()

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Which protocol reduces administrative overhead in a switched network by allowing the configuration of a new VLAN to be distributed to all the switches in a domain?()

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On which options are standard access list based?()

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At which layer of the OSI model dose PPP perform?()

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When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()

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