單項(xiàng)選擇題

根據(jù)下圖,R1能通告給R2的最有效的匯總是?()

A.172.1.0.0/22
B.172.1.0.0/21
C.172.1.4.0/22
D.172.1.4.0/24  172.1.5.0/24  172.1.6.0/24  172.1.7.0/24
E.172.1.4.0/25  172.1.4.128/25  172.1.5.0/24  172.1.6.0/24  172.1.7.0/24


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2.單項(xiàng)選擇題Given the output of the Floor3 switch, what statement describes the operation of this switch()。

A.VTP is disabled on this switch.
B.The switch can create, change, and delete VLANs.
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3.單項(xiàng)選擇題Running both IPv4 and IPv6 on a router simultaneously is known as what?()

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5.多項(xiàng)選擇題Which two states are the port states when RSTP has converged?()

A.blocking
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