單項選擇題

Which of the following is required if ports from VLANs on two separate switches need to broadcastto each other?（）

A. Port mirroring
B. VPN
C. Trunking
D. Port authentication

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單項選擇題

A link light on a switch is an example of which of the following Ethernet properties?（）

A. Collision detection
B. Multiple access points
C. Carrier sense
D. Collision avoidance

單項選擇題

In order for computers with private IP addresses to access the public Internet, which of thefollowing must the router perform?（）

A.NAT
B.BGP
C.DHCP
D.APIPA