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單項(xiàng)選擇題A company has a small network，consisting of a single switch and a single router.The switch has beenconfigured with two vlans，and route-on-a-stick is being configured on the router for inter-vlan routing.Atrunk is configured to connect the switch to the router.What is the minimum number of router subinterfacesthat are required for all the vlans to communicate？（）

A.one
B.three
C.two
D.zero

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1.單項(xiàng)選擇題A switch is configured as a vtp sever with a domain name of CCNA.Which cisco ios privileged mode command,followed by a reload of the swith,will reset the VTP management domain name of the switch to a NULL value?（）

A.#vtp domain unset
B.#delete vlan.dat
C.#no vtp domain
D.#vtp domain null

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2.多項(xiàng)選擇題Cisco NAC產(chǎn)品的主要分類（）

A.NAC設(shè)備服務(wù)器
B.NAC框架
C.NAC設(shè)備代理
D.Cisco NAC設(shè)備

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3.多項(xiàng)選擇題It has become necessary to configure an existing serial interface to accept a second Frame Relay virtualcircuit.Which of the following processes are required to accomplish this task？（）

A.configure static frame relay map entries for each subinterface network.
B.remove the ip address from the physical interface
C.create the virtual interfaces with the interface command
D.configure each subinterface with its own IP address
E.disable split horizon to prevent routing loops between the subinterface networks
F.encapsulate the physical interface with multipoint PPP

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4.多項(xiàng)選擇題Which two are advantages of static routing when compared to dynamic routing？（）

A.Security increases because only the network administrator may change the routing tables.
B.Configuration complexity decreases as network size increases.
C.Routing updates are automatically sent to neighbors.
D.Route summarization iscompued automatically by the router.
E.Routing traffic load is reduced when used in stub network links
F.An efficient algorithm is used to build routing tables，using automatic updates.
G.Routing tables adapt automatically to topology changes.

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5.多項(xiàng)選擇題Which three statements about RSTP are true?（）

A.RSTP significantly reduces topology reconverging time after a link failure.
B.RSTP expends the STP port roles by adding the alternate and backup roles.
C.RSTP port atates are blocking,discarding,learing,or forwarding.
D.RSTP also uses the STP proprsal-agreement sequence.
E.RSTP use the same timer-baseed process as STP on point-to-point links.
F.RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.

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