單項(xiàng)選擇題

Which of the following devices allows multiple internal IP addresses to access an external websitewith minimal impact to the network bandwidth?（）

A. Proxy
B. Load balancer
C. Router
D. Bandwidth shaper

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單項(xiàng)選擇題

802.11g wireless signals operating at 24GHz has a maximum line of sight range of which of thefollowing?（）

A. 460 feet (140 meters)
B. 540 feet (165 meters)
C. 560 feet (171 meters)
D. 840 feet (256 meters)

單項(xiàng)選擇題

Link aggregation is also known as port:（）

A.distribution
B.mirroring
C.spanning
D.trunking