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block

Which of the following is not one of the three distinct elements that work together to make satellite communication (SATCOM) possible?

Select the Correct Answers  

(0/0)

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Payload segment

Control segment

Space segment

Terminal segment

none

Conflicts regarding Defense Satellite Communications System (DSCS) ground mobile forces (GMF) satellite resources that cannot be settled by the Defense Information Systems Agency (DISA) and the regional satellite communications support center (RSSC) are resolved by the

Select the Correct Answers  

(0/0)

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Defense Information Systems Agency Operations Control Complex (DOCC)

Consolidated Space Operations Center (CSOC)

Joint Staff

Combatant commander (COCOM)

none

What two factors cause a quartz oscillator’s resonant frequency to drift?

Select the Correct Answers  

(0/0)

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Humidity and operating frequency

Humidity and aging

Temperature and aging

Temperature and operating frequency

none

Astronomical time is based on

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(0/0)

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the apparent motion of the sun in the sky

the moon’s rotation about the earth

apparent constellation movement

atomic clock oscillations

none

Which are the two types of communications satellites?

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(0/0)

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Active and passive

Active and real-time

Delay and passive

Delay and real-time

none

One of the functions of the telecommunication certification office is to

Select the Correct Answers  

(0/0)

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review the circuit priority against mission needs

assign a circuit number to the telecommunications service request

maintain case files on all major command (MAJCOM) circuits

ensure the user agency is prepared to pay for the service

none

Which satellite access technique is being used when all channels are pooled and used by any station according to its instantaneous traffic load?

Select the Correct Answers  

(0/0)

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Time division multiple access (TDMA)

Code division multiple access (CDMA)

Demand assigned multiple access (DAMA)

Frequency division multiple access (FDMA)

none

The operation of the atomic clock is based on the phenomenon that

Select the Correct Answers  

(0/0)

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atoms release energy at a particular resonant frequency

atoms are sensitive to temperature and directional effects

when atoms are split they produce predictable nuclear reactions

crystals resonate when an electric charge is applied

none

What time scale gives us a universally agreed to standard time scale with the stability and accuracy of atomic time and synchronous operation with the earth’s motion about the sun we can depend on?

Select the Correct Answers  

(0/0)

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Coordinated universal time

Mean solar time

Atomic time

Astronomical time

none

Telecommunications service orders are issued by the

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(0/0)

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National Communications System (NCS)

user’s technical control facility

Department of Defense (DOD)

Defense Information Systems Agency (DISA)

none

What is the inclination angle of a polar orbit?

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(0/0)

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45°

90°

0°

180°

none

Which of the following satellite look angle methods is provided by (satellite communication SATCOM planners?

Select the Correct Answers  

(0/0)

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Satellite access authorization

Computer based application

Satellite slide rule

Programmed ground terminal

none

Which satellite reflects signals transmitted toward it?

Select the Correct Answers  

(0/0)

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Real-time

Delay

Passive

Active

none

which of the following is not a function of the (satellite communication) SATCOM control segment?

Select the Correct Answers  

(0/0)

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Payload control

Ground control

Spacecraft control

Network control

none

Which term describes the longest distance across an elliptical orbit?

Select the Correct Answers  

(0/0)

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Perigee

Major axis

Apogee

Minor axis