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單項(xiàng)選擇題Why does RouterA show multiple unequal cost paths to network 192.168.81.0/24（）。

A.A variance was configured for EIGRP autonomous system 109.
B.The EIGRP topology table displays all routes to a destination.
C.The EIGRP topology table shows only backup routes to a destination.
D.Multiple floating static routes were configured to network 192.168.81.0 via interface Serial0.

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1.多項(xiàng)選擇題What are the possible trunking modes for a switch port? （）

A.transparent
B.auto
C.on
D.desirable
E.client
F.forwarding

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2.多項(xiàng)選擇題What should be done prior to backing up an IOS image to a TFTP server? （）

A.Make sure that the server can be reached across the network.
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3.多項(xiàng)選擇題Workstation A has been assigned an IP address of 192.0.2.24/28.Workstation B has been assigned an IP address of 192.0.2.100/28.The two workstations are connected with a straight-through cable.Attempts to ping between the hosts are unsuccessful. What two things can be done to allow communications between the hosts？（）

A.Replace the straight-through cable with a crossover cable
B.Change the subnet mask of the hosts to /25
C.Change the subnet mask of the hosts to /26
D.Change the address of Workstation A to 192.0.2.15
E.Change the address of Workstation B to 192.0.2.111

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4.多項(xiàng)選擇題The network security policy requires that only one host be permitted to attach dynamically to each switch interfacE.If that policy is violated, the interface should shut down. Which two commands must the network administrator configure on the 2950 Catalyst switch to meet this policy? （）

A.Switch1(config-if)# switchport port-security maximum 1
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D.Switch1(config-if)# switchport port-security violation shutdown
E.Switch1(config-if)# ip access-group 10

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5.多項(xiàng)選擇題Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies (Choose two.)（）。

A.copier
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C.toaster
D.cordless phone
E.IP phone
F.AM radio

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