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多項(xiàng)選擇題For what two purposes does the Ethernet protocol use physical addresses? （）

A.Network A - 172.16.3.48/26
B.Network A - 172.16.3.128/25
C.Network A - 172.16.3.192/26
D.Link A - 172.16.3.0/30
E.Link A - 172.16.3.40/30
F.Link A - 172.16.3.112/30

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1.多項(xiàng)選擇題 What can be determined from the line of show ip route output shown in the exhibit?（）

A.The next routing update can be expected in 35 seconds.
B.The IP address 10.10.10.6 is configured on S0/1.
C.The IP address 10.10.10.8 is configured on S0/1.
D.This route is using the default administrative distance.
E.The 10.10.10.8 network is two hops away from this router.

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2.單項(xiàng)選擇題使配置的訪問列表應(yīng)用到接口上的命令是什么？（）

A.access-group
B.access-list
C.acl
D.firewall packet-filter xxxx inbound/outbound

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3.多項(xiàng)選擇題Which destination addresses will be used by Host A to send data to Host C?（）

A.the IP address of Switch 1
B.the MAC address of Switch 1
C.the IP address of Host C
D.the MAC address of Host C
E.the IP address of the router's E0 interface
F.the MAC address of the router's E0 interface

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4.單項(xiàng)選擇題在一個(gè)接口配置x25 map ip 102.112.43.125 x121-address 12345命令，其中102.112.43.125和123456分別是（）。

A.對(duì)端的IP地址和對(duì)端的x.121地址
B.對(duì)端的IP地址和本接口的x.121地址
C.本接口的IP地址和對(duì)端的x.121地址
D.本接口的IP地址和本接口的x.121地址

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5.單項(xiàng)選擇題Why will as witch never learn a broadcast address？（）

A.Broadcast frames are never sent to swiches.
B.Broadcast addresses use an incorrect format for the switching table.
C.A broadcast address will never be the source address of a frame.
D.Broadcasts only use network layer addressing.
E.A broadcast frame is never forwarded by a switch.

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