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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 answer(s).  

(0/0)

---

Control segment

Space segment

Terminal segment

Payload segment

none

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

Select the correct answer(s).  

(0/0)

---

Network control

Ground control

Payload control

Spacecraft control

none

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

Select the correct answer(s).  

(0/0)

---

crystals resonate when an electric charge is applied

when atoms are split they produce predictable nuclear reactions

atoms are sensitive to temperature and directional effects

atoms release energy at a particular resonant frequency

none

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

Select the correct answer(s).  

(0/0)

---

Temperature and operating frequency

Temperature and aging

Humidity and operating frequency

Humidity and aging

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)

Frequency division multiple access (FDMA)

Demand assigned multiple access (DAMA)

none

What is the inclination angle of a polar orbit?

Select the correct answer(s).  

(0/0)

---

0°

90°

45°

180°

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)

---

Coordinated universal time

Atomic time

Astronomical time

Mean solar time

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

Programmed ground terminal

Computer based application

Satellite slide rule

none

One of the functions of the telecommunication certification office is to

Select the correct answer(s).  

(0/0)

---

assign a circuit number to the telecommunications service request

ensure the user agency is prepared to pay for the service

review the circuit priority against mission needs

maintain case files on all major command (MAJCOM) circuits

none

Astronomical time is based on

Select the correct answer(s).  

(0/0)

---

the apparent motion of the sun in the sky

atomic clock oscillations

apparent constellation movement

the moon’s rotation about the earth

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)

---

Joint Staff

Combatant commander (COCOM)

Defense Information Systems Agency Operations Control Complex (DOCC)

Consolidated Space Operations Center (CSOC)

none

Which are the two types of communications satellites?

Select the correct answer(s).  

(0/0)

---

Delay and real-time

Active and real-time

Active and passive

Delay and passive

none

Telecommunications service orders are issued by the

Select the correct answer(s).  

(0/0)

---

Defense Information Systems Agency (DISA)

National Communications System (NCS)

Department of Defense (DOD)

user’s technical control facility

none

Which satellite reflects signals transmitted toward it?

Select the correct answer(s).  

(0/0)

---

Active

Real-time

Delay

Passive

none

Which term describes the longest distance across an elliptical orbit?

Select the correct answer(s).  

(0/0)

---

Apogee

Minor axis

Perigee

Major axis