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單項(xiàng)選擇題

Which of the following has the HIGHEST data rate speed?（）

A.T1
B.ADSL
C.SDSL
D.OC-3

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單項(xiàng)選擇題

Which of the following should be used to test an internal NIC without having to connect it to thenetwork?（）

A. Loopback cable
B. Crossover cable
C. Rollover cable
D. Straight cable

單項(xiàng)選擇題

A stateless firewall requires a technician to:（）

A. Write more packet filters.
B. Write less packet filters.
C. Purchase a license for states.
D. Upgrade definitions manually