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NENA ENP - PRINCIPLES OF
TELECOMMUNICATIONS BRAND NEW
OFFICIAL QUESTIONS WITH
ANSWERS.
Transport systems - correct answer -A connected-the-dot puzzle
to get the call from point A to point B. (Transport facilities are the
physical medium over which transmission takes place)
copper wire - correct answer -Original infrastructure of the phone
system. (Twisted pair - two insulated pairs are twisted around
each other to reduce interference)
Fiber optic - correct answer -Light is transmitted through thin
filaments of glass; only digital can be used - not analog. 1,000s of
simultaneous voice signals & large amounts of data can be
transmitted over long distances. High bandwidth at low cost and
requires less space. Not sensitive to interference.
microwave - correct answer -A wavelength of radio signal that
travels in a straight line for short distance; line of sight approx 30
miles; tower to tower pic; requires repeater after 30 miles;
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electromagnetic waves in radio frequencies to transmit phone,
video and data; weather related interference
satellite - correct answer -Specialized form of microwave
transmission where the tower is "in the sky" approx 22,300
Miles above equator; moves w/earth which is why stationary dish
is pointed toward one place
coaxial cable - correct answer -Cable created to be shielded from
outside interference; composed of conducting wire called core
conductor located inside another conducting wire called the
shield; can transmit large amounts of data at high rate of speed -
think Netflix streaming
Types of Transport facilities/systems - correct answer -Copper
wire
Fiber optic
Microwave
Satellite
Coaxial cable
NENA ENP - PRINCIPLES OF
TELECOMMUNICATIONS BRAND NEW
OFFICIAL QUESTIONS WITH
ANSWERS.
Transport systems - correct answer -A connected-the-dot puzzle
to get the call from point A to point B. (Transport facilities are the
physical medium over which transmission takes place)
copper wire - correct answer -Original infrastructure of the phone
system. (Twisted pair - two insulated pairs are twisted around
each other to reduce interference)
Fiber optic - correct answer -Light is transmitted through thin
filaments of glass; only digital can be used - not analog. 1,000s of
simultaneous voice signals & large amounts of data can be
transmitted over long distances. High bandwidth at low cost and
requires less space. Not sensitive to interference.
microwave - correct answer -A wavelength of radio signal that
travels in a straight line for short distance; line of sight approx 30
miles; tower to tower pic; requires repeater after 30 miles;
, Page | 2
electromagnetic waves in radio frequencies to transmit phone,
video and data; weather related interference
satellite - correct answer -Specialized form of microwave
transmission where the tower is "in the sky" approx 22,300
Miles above equator; moves w/earth which is why stationary dish
is pointed toward one place
coaxial cable - correct answer -Cable created to be shielded from
outside interference; composed of conducting wire called core
conductor located inside another conducting wire called the
shield; can transmit large amounts of data at high rate of speed -
think Netflix streaming
Types of Transport facilities/systems - correct answer -Copper
wire
Fiber optic
Microwave
Satellite
Coaxial cable
