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單項(xiàng)選擇題

In the 7-layer OSI model, which layer switching will take place?（）

A.Layer two
B.Layer four
C.Layer one
D.Layer three

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單項(xiàng)選擇題

In which area of the campus LAN are the user computers attached to the network?（）

A.core
B.access
C.distribution
D.aggregation

多項(xiàng)選擇題

Which three are current small business needs for technology investments? （）

A.be more productive
B.plan for today
C.work from anywhere
D.reduce reliance on technology
E.serve customers better
F.minimize network investments

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