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單項(xiàng)選擇題

The Cisco Aironet 1140 Series Access Point draws 12.95 W at the power source. However， whenusing a long Ethernet cable， the device can draw up to how much additional wattage？（）

A.0.25 W
B.0.45 W
C.1 W
D.1.25 W
E.2.45 W
F.5.65 W

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單項(xiàng)選擇題

When using a lightning arrestor， connect which type of ground wire to a good earth ground？（）

A.#6 solid copper
B.#12 solid copper
C.#20 solid copper
D.#22 solid copper

單項(xiàng)選擇題

By how much is a signal’s strength reduced when the signal passes through an object thatintroduces 3 dB of attenuation？（）

A.1/6
B.1/4
C.1/3
D.1/2