In analog data transmission, frequencies of 0 to 300 Hz and 3300 to 4000 Hz are reserved as ________, used to ensure that the data transmission will not interfere with other signals

Fill in the blank(s) with correct word


guardbands

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Two biological hazards are ______________ and _____________.

Fill in the blank(s) with the appropriate word(s).

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The ____ starts at the surface and extends upward to an average of about 4 miles over the poles and ranges up to 17 miles above sea level near the equator

A) exosphere B) thermosphere C) troposphere D) stratosphere

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In the simplest sense, a zener diode is really a:

A) current regulator. B) reference voltage. C) voltage regulator. D) reference current.

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Laser cans are used to __________________.