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單項(xiàng)選擇題Which statement is true，as relates to classful or classless routing？（）

A.RIPV1 and OSPF are classless routing protocols.
B.Classful routing protocols send the subnet mask in routing updates.
C.Automatic summarization at classful boundaries can cause problems on disc……
D.EIGRP and OSPF are classful routing protocols and summarize routes by def……

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1.單項(xiàng)選擇題 根據(jù)下圖，圖中的拓?fù)渲写嬖诙嗌賯€(gè)廣播域？（）

A.1
B.2
C.3
D.4
E.5
F.6

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2.單項(xiàng)選擇題What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology？（）

A.lowest port MAC address
B.port priority number and MAC address
C.VTP revision number
D.highest port priority number
E.path cost

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3.單項(xiàng)選擇題In which solution is a router ACL used？（）

A.protecting a server frome unauthorized acces
B.controlling path selection，based on the route metric
C.reducing router CPU utilization
D.filterring packets that are passing through a router

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4.單項(xiàng)選擇題Assuming default setting，how can you erase the VTP data base of VLANs on a CISCO IOS switch running in VTP server mode？（）

A.Enable VTP pruning
B.From privileged mode，erase the startup configuration file，then reload.
C.From privileged mode，erase the vlandate file，then reload.
D.Cycle the switch power.

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5.單項(xiàng)選擇題一個(gè)默認(rèn)的幀中繼WAN被分類為哪種物理網(wǎng)絡(luò)類型？（）

A.點(diǎn)到點(diǎn)
B.廣播多路訪問
C.非廣播多路訪問
D.非廣播多點(diǎn)
E.廣播點(diǎn)到多點(diǎn)

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