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block

Astronomical time is based on

Select the correct answer(s).  

(0/0)

---

the apparent motion of the sun in the sky

the moon’s rotation about the earth

atomic clock oscillations

apparent constellation movement

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 answer(s).  

(0/0)

---

Code division multiple access (CDMA)

Time division multiple access (TDMA)

Demand assigned multiple access (DAMA)

Frequency division multiple access (FDMA)

none

Telecommunications service orders are issued by the

Select the correct answer(s).  

(0/0)

---

Defense Information Systems Agency (DISA)

National Communications System (NCS)

user’s technical control facility

Department of Defense (DOD)

none

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

Select the correct answer(s).  

(0/0)

---

Humidity and aging

Humidity and operating frequency

Temperature and aging

Temperature and operating frequency

none

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

Select the correct answer(s).  

(0/0)

---

atoms are sensitive to temperature and directional effects

when atoms are split they produce predictable nuclear reactions

atoms release energy at a particular resonant frequency

crystals resonate when an electric charge is applied

none

Which term describes the longest distance across an elliptical orbit?

Select the correct answer(s).  

(0/0)

---

Minor axis

Major axis

Apogee

Perigee

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 answer(s).  

(0/0)

---

Astronomical time

Atomic time

Mean solar time

Coordinated universal time

none

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

Select the correct answer(s).  

(0/0)

---

Payload control

Ground control

Network control

Spacecraft control

none

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

Select the correct answer(s).  

(0/0)

---

Control segment

Space segment

Payload segment

Terminal segment

none

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

Select the correct answer(s).  

(0/0)

---

Satellite access authorization

Computer based application

Programmed ground terminal

Satellite slide rule

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 answer(s).  

(0/0)

---

Combatant commander (COCOM)

Consolidated Space Operations Center (CSOC)

Defense Information Systems Agency Operations Control Complex (DOCC)

Joint Staff

none

One of the functions of the telecommunication certification office is to

Select the correct answer(s).  

(0/0)

---

ensure the user agency is prepared to pay for the service

assign a circuit number to the telecommunications service request

review the circuit priority against mission needs

maintain case files on all major command (MAJCOM) circuits

none

Which are the two types of communications satellites?

Select the correct answer(s).  

(0/0)

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Active and real-time

Delay and real-time

Delay and passive

Active and passive

none

Which satellite reflects signals transmitted toward it?

Select the correct answer(s).  

(0/0)

---

Active

Passive

Delay

Real-time

none

What is the inclination angle of a polar orbit?

Select the correct answer(s).  

(0/0)

---

90°

0°

180°

45°