1C651 Vol.2

1. (201) The Air Force defines space for awarding astronaut wings at altitudes above

52 miles.

40 miles.

25 miles.

15 miles.

2. (201) Which country blew up their own satellite with the intent on displaying the ability to destroy our space assets?

Israel.

China.

Russia.

North Korea.

3. (201) Which type of threat is the result of a satellite breaking up into hundreds of pieces that can damage space assets?

Intentional.

Blue-on-blue.

Unintentional.

Ground-based.

4. (201) Which system do you lose if you accidently interfered with the constellation that has secure voice and data communications for the U.S. military?

Global Positioning System (GPS).

Space Based Infrared System (SBIRS).

Defense Meteorological Satellite Program (DMSP).

Defense Satellite Communication System (DSCS).

5. (204) Which effect of radiation is captured by materials on a satellite?

Reflection.

Absorption.

Transmission.

Reconstitution.

6. (209) What is it called when the launch site is used to determine where a ground trace starts?

Period.

Inclination.

Eccentricity.

Injection point.

7. (209) What type of orbit is the International Space Station (ISS) in?

Low-Earth orbit.

Deep space orbit.

Geosynchronous orbit.

Semi-synchronous orbit.

8. (212) Which part of the electromagnetic (EM) spectrum would you use to communicate with the International Space Station (ISS)?

Radio spectrum.

Optical spectrum.

Infrared spectrum.

Ultraviolet wave spectrum.

9. (204) Which effect of radiation bounces off a satellite?

Reflection.

Absorption.

Transmission.

Reconstitution.

10. (209) Which coordinate system uses a first point of Aries (vernal equinox) as a fundamental component?

Orbit.

Geocentric.

Geographic.

Topocentric.

11. (214) Which component of a signal is where information is attached before transmission?

Sine wave.

Phase wave.

Carrier wave.

Ground wave.

12. (201) Which is not a way to threaten space operations?

Kinetic.

Intentional.

Blue-on-blue.

Green-on-blue.

13. (202) Which of the following is not a layer of the atmospheric shell?

Mesosphere.

Stratosphere.

Troposphere.

Cumulusphere.

14. (207) Which ellipse parameter is the gravitational center of the body about which the satellite orbits?

Apogee.

Perigee.

Occupied/primary focus.

Unoccupied/secondary focus.

15. (201) How do aeronautical engineers define where space begins?

Altitudes above 15 miles.

Altitudes above 25 miles.

Altitudes above 52 miles.

Altitudes above 62 miles.

16. (201) Which type of threat is used because it is hard to detect and can be duplicated very quickly?

Kinetic.

Cyberspace.

Anti-satellite.

Microsatellite.

17. (202) Which type of wave is not normally found in the lower atmosphere where weather occurs?

X-ray and gamma ray.

Microwave.

Ultraviolet.

Infrared.

18. (210) Which out-of-plane maneuver has an in-plane component?

Simple.

Combined.

Rendezvous.

Hohmann transfer.

19. (211) Which is true about a fast transfer versus a Hohmann transfer?

More efficient and cost less.

More efficient and cost more.

Less efficient and cost less.

Less efficient and cost more.

20. (211) Which target satellite helps the chase satellite with position and velocity updates?

Cooperative.

Unintentional.

Uncooperative.

Non-cooperative.

21. (202) Which limiting factor applies to sensors that use visible light in their mission?

Only operate at night.

Only operate at night and in clear weather.

Can operate day and night, in clear weather.

Can only operate in the day, in clear weather.

22. (203) Where does a satellite remain in the total shadow of an eclipse?

Umbra.

Perigee.

Apogee.

Penumbra.

23. (204) Which protective measure has the "gold" foil interspersed in thin layers to reflect solar energy away from the satellite?

Paint.

Panels.

Blankets.

Antennas.

24. (207) Who was the first person to use the word 'satellite' and developed three laws of planetary motion?

Copernicus.

Galileo Galilei.

Johannes Kepler.

Sir Isaac Newton.

25. (208) What orbital component defines the time it takes the satellite to complete an orbital revolution from any given point back to that same point?

Period.

Epoch time.

Right ascension.

Argument of perigee.

26. (209) What kind of day is it if the earth takes 1436.07 minutes to rotate about its axis with respect to the sun?

Solar day.

Lunar day.

Sidereal day.

Celestial day.

27. (210) Which class of maneuver enables the Space X–37B to dock with the International Space Station (ISS)?

In-plane.

Transfer.

Rendezvous.

Out-of-plane.

28. (215) What type of interference does an adversary use to appear as an authorized user to send false commands?

Spoofing.

Link jamming.

Uplink jamming.

Downlink jamming.

29. (216) What is the decibel used to define on an antenna?

Amplifier losses.

Amplifier gains.

Component gains.

Noise losses.

30. (217) Which subsystem loss is from absorbing oxygen and water vapor?

Equipment loss.

Free space loss.

Atmospheric and rain loss.

Antenna tracking error loss.

31. (201) What material can be used to harden a facility against an electromagnetic pulse (EMP) burst?

Steel.

Concrete.

Titanium.

Aluminum.

32. (205) Which is not a space vacuum related issue?

Outgassing.

Heat transfer.

Cold welding.

Radiation exposure.

33. (206) What type of spacecraft charging is hazardous to the satellite's internal electronics systems?

Bulk.

Solar.

Absolute.

Differential.

34. (207) "Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces impressed on it" identifies Newton's

First law of motion.

Second law of motion.

Third law of motion.

Law of universal gravitation.

35. (201) Which non-kinetic threat generates radio frequency radiation and has limited directivity?

Low-power laser.

High-power laser.

High-power microwave.

Ultrawideband weapon.

36. (203) Which is not a form of travel for the sun's energy?

X-rays.

Infrared.

Visible light.

Gamma shield.

37. (205) How does the Herschel space telescope cool certain parts to function properly?

Using liquid helium.

Using liquid nitrogen.

Circulating cold air around the parts.

Using water from air conditioning units.

38. (210) Which maneuver is the slowest and uses fuel in the most efficient way?

Fast transfer.

Rendezvous.

Out-of-plane.

Hohmann transfer.

39. (210) What is the disadvantage of the fast transfer?

Slowest maneuver.

Uses 50 percent more fuel.

Too difficult to perform safely.

Requires a satellite to swing around another object.

40. (211) Which target satellite interferes with the chase satellite?

Cooperative.

Unintentional.

Uncooperative.

Non-cooperative.

41. (201) Which activity is a contributor to congestion in space and poses a critical threat to space assets?

Anti-satellites.

Microsatellites.

Electromagnetic pulse.

High altitude electromagnetic pulse.

42. (201) Which mitigation technique is used to defend our space systems by deterrence and recovery?

Passive counterspace.

Offensive counterspace.

Defensive counterspace.

Redundant counterspace.

43. (205) Which method works as a transfer method for moving heat away from a spacecraft?

Radiation.

Convection.

Conduction.

Thermal isolation.

44. (207) Which element of an ellipse is the intersection between the major and minor axis?

Apogee.

Focal length.

Apogee height.

Geometric center.

45. (207) "The squares of the sidereal periods of the planets are in direct proportion to the cubes of the semi-major axes of their orbits" identifies Kepler's

Law of areas.

Law of periods.

Law of ellipses.

Law of universal attraction.

46. (208) How many minutes can the period be for a satellite that is re-entering the atmosphere?

66.

88.

89.

99.

47. (210) What is always common to the pre-thrust and post-thrust orbits?

Perigee.

Apogee.

Inclination.

Thrust point.

48. (211) Which part of space situational awareness keeps track of enemy satellites?

Solar day

Laser deconfliction.

Telemetry, tracking and control (TT&C).

Satellite Reconnaissance Advance Notice (SATRAN).

49. (212) Which region of the ultraviolet (UV) light wavelength is the most energetic?

Far UV.

Near UV.

Close UV.

Extreme UV.

50. (201) Which non-kinetic threat generates a radio frequency beam to penetrate through cracks in a satellite?

Low-power laser.

High-power laser.

High-power microwave.

Ultrawideband weapon.

51. (203) Which proton event level can cause a complete blackout of high frequency communications in Polar Regions?

S1.

S2.

S3.

S5.

52. (204) If left unprotected from solar energy, how low can the surface temperature of a satellite get on the shaded side?

–259° Fahrenheit.

–269° Fahrenheit.

–279° Fahrenheit.

–289° Fahrenheit.

53. (206) What is the offset between the earth's magnetic field axis and the center rotational axis?

5°.

7°.

9°.

11°.

54. (206) Which part of the earth's atmosphere does the Space X–37B leave before it enters space?

Ionosphere.

Mesosphere.

Troposphere.

Stratosphere.

55. (207) "A body acted upon by a constant force will move with a constant acceleration in the direction of the force" identifies Newton's

First law of motion.

Second law of motion.

Third law of motion.

Law of universal gravitation.

56. (207) What happens when you move a satellite away from the earth?

Increase mass.

Increase velocity.

Increase the radius.

Decrease the radius.

57. (213) Which radio frequency (RF) is also known as longwave?

Low frequency (LF).

Medium frequency (MF).

Very low frequency (VLF).

Very high frequency (VHF).

58. (217) What tracking method is a precise digital ranging signal modulated onto the uplink carrier?

Passive.

Passive beacon.

Beacon transponder.

Pseudo-random noise.

59. (203) Which proton event level may cause some communication problems in Polar Regions?

S1.

S2.

S3.

S5.

60. (203) Which geomagnetic storm level indicates there might be some impact to satellite operations?

G1.

G2

G3.

G5.

61. (208) Which orbital component is used when acquiring a satellite using a tracking station?

Period.

Epoch time.

Right ascension.

Argument of perigee.

62. (209) The period of a low-Earth orbit (LEO) is approximately

80 minutes.

90 minutes.

99 minutes.

120 minutes.

63. (212) Which radio frequency supports the mission of Wideband Global SATCOM?

Very high frequency (VHF).

Ultrahigh frequency (UHF).

Super high frequency (SHF).

Extremely high frequency (EHF).

64. (216) What happens when you convert a decibel to a number by subtracting the decibel value?

Multiply linear values.

Divide linear values.

Double linear values.

Subtract linear values.

65. (203) Which geomagnetic storm level indicates there can be damaging surface charging to satellites?

G1.

G2.

G3.

G5.

66. (209) If a satellite has a period of 448 minutes, what type of orbit is it in?

Near-Earth orbit.

Deep space orbit.

Geosynchronous orbit.

Semi-synchronous orbit.

67. (209) A satellite's ground track with nodal regression successively tracks

Eastward.

Westward.

Northward.

Southward.

68. (210) When a satellite is traveling in a south direction and a north thrust is applied, the inclination

Increases.

Decreases.

Stays the same.

Doubles by half.

69. (211) Which type of rendezvous has the interceptor waiting in a phasing orbit?

Coplanar.

Co-orbital.

Fast transfer.

Hohmann transfer.

70. (215) Which component of the communications segment transmits the satellite's operational data?

Ground segment.

Airborne segment.

Control links.

Mission links.

71. (216) What does a signal gain of 100 percent equal in dB power?

3.

6.

9.

10.

72. (217) Which antenna polarization is predominantly used for space communications?

Vertical.

Circular.

Elliptical.

Horizontal.

73. (218) Which frequency is not used in military satellite communication (SATCOM)?

Very high frequency.

Ultrahigh frequency.

Super high frequency.

Extremely high frequency.

74. (210) In what direction do the ascending/descending nodes move when a north thrust is applied?

East.

West.

South.

North.

75. (203) If a flare occurs, how long does it take for a cloud of solar material to reach Earth?

One to three days.

One to four days.

Three to five days.

Four to six days.

76. (203) Which type of satellite will go through two eclipse seasons of 44 days each?

Polar.

Geosynchronous.

Sun-synchronous.

Semi-synchronous.

77. (206) Which is a space object that glows at about 40 and 75 miles above the earth?

Comet.

Meteor.

Meteorite.

Meteoroid.

78. (216) Which decibel (dB) value represents 100?

0 dB.

10 dB.

20 dB.

40 dB.

79. (217) If the antenna is pointed at the receiver, then what is the main beam pointed at?

Center.

Boresight.

Lobesight.

Center focus.

80. (217) Which antenna component is designed to perform data transmission, reception, and tracking?

Filter.

Diplexer.

Waveguide.

Feed assembly.

81. (217) Which antenna tracking mode loads a time table of coordinates into the ground station computer?

Autotrack.

Slave mode.

Forced track.

Manual track.

82. (206) Which is a space object that travels around the sun at speeds averaging 93,600 mph?

Comet.

Meteor.

Meteorite.

Meteoroid.

83. (209) Which coordinate system uses the prime meridian as a fundamental component?

Orbit.

Geocentric.

Geographic

Topocentric.

84. (216) Which decibel digit represents the integer factor?

Leftmost.

Center.

Rightmost.

Linear number.

85. (217) Which type of antenna has an increase in power that emits radiation in specific directions?

Low-gain.

High-gain.

Medium-gain.

Ultrahigh gain.

86. (206) What type of spacecraft charging only lasts for microseconds due to plasma changing uniformly?

Bulk.

Solar.

Absolute.

Differential.

87. (212) Which radio frequency supports the mission of Global Positioning Systems (GPS)?

Very high frequency (VHF).

Ultrahigh frequency (UHF).

Super high frequency (SHF).

Extremely high frequency (EHF).

88. (212) Which part of the electromagnetic (EM) spectrum has wavelengths ranging between 0.03 and 3 nanometers?

X-ray.

Infrared.

Gamma-rays.

Ultraviolet waves.

89. (209) What type of orbit is a geostationary satellite in?

Equatorial orbit.

Highly elliptical orbit.

Geosynchronous orbit.

Sun-synchronous orbit.

90. (213) Which radio frequency (RF) is used for frequency modulation (FM) radio broadcasts?

Low frequency (LF).

Medium frequency (MF).

Very low frequency (VLF).

Very high frequency (VHF).

91. (215) Which component of the communications segment performs the commanding of sensors?

Uplink signal.

Downlink signal.

Control link.

Mission link.

92. (213) Which multiple access method overlaps the signals and their frequencies?

Code division multiple access (CDMA).

Time division multiple access (TDMA).

Demand assigned multiple access (DAMA).

Frequency division multiple access (FDMA).

93. (218) Which satellite communication (SATCOM) system uses ultrahigh frequencies to transmit to small tactical terminals?

Gapband.

Protected.

Wideband.

Narrowband.

94. (217) What tracking method uses the ground equipment to transmit equally time spaced pulses to the satellite?

Passive.

Passive beacon.

Pseudo-random noise.

95. (211) Which type of burn must be performed at the nodal crossing?

In-plane.

Posigrade.

Retrograde.

Out-of-plane.

96. (213) Which technique lowers the power of a signal to below background noise?

Spread spectrum.

Time division multiple access.

Direct sequence spread spectrum.

Frequency hopping spread spectrum.

97. (217) How is the linear polarization oriented for a geo-stationary satellite that is parallel to the earth's axis?

Vertical.

Circular.

Elliptical.

Horizontal.

98. (201) Which responsiveness tier delivers a new product in less than a year?

1.

2.

3.

4.

99. (211) Which target satellite forces the chase satellite to have information independence?

Cooperative.

Unintentional.

Uncooperative.

Non-cooperative.

100. (218) Which satellite communication (SATCOM) system is broken out into three segments?

Global Positioning System (GPS).

Wideband Global Satellite (WGS).

Military Strategic and Tactical Relay (Milstar).

Advanced extremely high frequency (AEHF).

1c651 Vol.2