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單項(xiàng)選擇題

Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch over FastEthernet？（）

A.802.3ad
B.802.1w
C.802.1Q
D.802.1d

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單項(xiàng)選擇題

At which layer of the OSI model dose PPP perform?（）

A.Layer 3
B.Layer 4
C.Layer 2
D.Layer 5

多項(xiàng)選擇題

The network technician is planning to use the 255.255.255.224 subent mask on the network.which three valid IP addresses can the technician use for the hosts？（）

A.172.22.243.127
B.172.22.243.191
C.172.22.243.190
D.10.16.33.98
E.10.17.64.34
F.192.168.1.160

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