1c651 Vol.2
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- 1.(201) How do aeronautical engineers define where space begins?
- A.
Altitudes above 15 miles.
- B.
Altitudes above 25 miles.
- C.
Altitudes above 52 miles.
- D.
Altitudes above 62 miles.
- 2.(201) The Air Force defines space for awarding astronaut wings at altitudes above
- A.
52 miles.
- B.
40 miles.
- C.
25 miles.
- D.
15 miles.
- 3.(201) Which type of threat is used because it is hard to detect and can be duplicated very quickly?
- A.
Kinetic.
- B.
Cyberspace.
- C.
Anti-satellite.
- D.
Microsatellite.
- 4.(201) Which is not a way to threaten space operations?
- A.
Kinetic.
- B.
Intentional.
- C.
Blue-on-blue.
- D.
Green-on-blue.
- 5.(201) Which non-kinetic threat generates a radio frequency beam to penetrate through cracks in a satellite?
- A.
Low-power laser.
- B.
High-power laser.
- C.
High-power microwave.
- D.
Ultrawideband weapon.
- 6.(201) Which non-kinetic threat generates radio frequency radiation and has limited directivity?
- A.
Low-power laser.
- B.
High-power laser.
- C.
High-power microwave.
- D.
Ultrawideband weapon.
- 7.(201) What material can be used to harden a facility against an electromagnetic pulse (EMP) burst?
- A.
Steel.
- B.
Concrete.
- C.
Titanium.
- D.
Aluminum.
- 8.(201) Which country blew up their own satellite with the intent on displaying the ability to destroy our space assets?
- A.
Israel.
- B.
China.
- C.
Russia.
- D.
North Korea.
- 9.(201) Which type of threat is the result of a satellite breaking up into hundreds of pieces that can damage space assets?
- A.
Intentional.
- B.
Blue-on-blue.
- C.
Unintentional.
- D.
Ground-based.
- 10.(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?
- A.
Global Positioning System (GPS).
- B.
Space Based Infrared System (SBIRS).
- C.
Defense Meteorological Satellite Program (DMSP).
- D.
Defense Satellite Communication System (DSCS).
- 11.(201) Which activity is a contributor to congestion in space and poses a critical threat to space assets?
- A.
Anti-satellites.
- B.
Microsatellites.
- C.
Electromagnetic pulse.
- D.
High altitude electromagnetic pulse.
- 12.(201) Which mitigation technique is used to defend our space systems by deterrence and recovery?
- A.
Passive counterspace.
- B.
Offensive counterspace.
- C.
Defensive counterspace.
- D.
Redundant counterspace.
- 13.(201) Which responsiveness tier delivers a new product in less than a year?
- A.
1.
- B.
2.
- C.
3.
- D.
4.
- 14.(202) Which of the following is not a layer of the atmospheric shell?
- A.
Mesosphere.
- B.
Stratosphere.
- C.
Troposphere.
- D.
Cumulusphere.
- 15.(202) Which limiting factor applies to sensors that use visible light in their mission?
- A.
Only operate at night.
- B.
Only operate at night and in clear weather.
- C.
Can operate day and night, in clear weather.
- D.
Can only operate in the day, in clear weather.
- 16.(202) Which type of wave is not normally found in the lower atmosphere where weather occurs?
- A.
X-ray and gamma ray.
- B.
Microwave.
- C.
Ultraviolet.
- D.
Infrared.
- 17.(203) Which is not a form of travel for the sun’s energy?
- A.
X-rays.
- B.
Infrared.
- C.
Visible light.
- D.
Gamma shield.
- 18.(203) Which proton event level may cause some communication problems in Polar Regions?
- A.
S1.
- B.
S2.
- C.
S3.
- D.
S5.
- 19.(203) Which proton event level can cause a complete blackout of high frequency communications in Polar Regions?
- A.
S1.
- B.
S2.
- C.
S3.
- D.
S5.
- 20.(203) If a flare occurs, how long does it take for a cloud of solar material to reach Earth?
- A.
One to three days.
- B.
One to four days.
- C.
Three to five days.
- D.
Four to six days.
- 21.(203) Which geomagnetic storm level indicates there might be some impact to satellite operations?
- A.
G1.
- B.
G2
- C.
G3.
- D.
G5.
- 22.(203) Which geomagnetic storm level indicates there can be damaging surface charging to satellites?
- A.
G1.
- B.
G2.
- C.
G3.
- D.
G5.
- 23.(203) Which type of satellite will go through two eclipse seasons of 44 days each?
- A.
Polar.
- B.
Geosynchronous.
- C.
Sun-synchronous.
- D.
Semi-synchronous.
- 24.(203) Where does a satellite remain in the total shadow of an eclipse?
- A.
Umbra.
- B.
Perigee.
- C.
Apogee.
- D.
Penumbra.
- 25.(204) If left unprotected from solar energy, how low can the surface temperature of a satellite get on the shaded side?
- A.
–259° Fahrenheit.
- B.
–269° Fahrenheit.
- C.
–279° Fahrenheit.
- D.
–289° Fahrenheit.
- 26.(204) Which effect of radiation bounces off a satellite?
- A.
Reflection.
- B.
Absorption.
- C.
Transmission.
- D.
Reconstitution.
- 27.(204) Which effect of radiation is captured by materials on a satellite?
- A.
Reflection.
- B.
Absorption.
- C.
Transmission.
- D.
Reconstitution.
- 28.(204) Which protective measure has the “gold” foil interspersed in thin layers to reflect solar energy away from the satellite?
- A.
Paint.
- B.
Panels.
- C.
Blankets.
- D.
Antennas.
- 29.(205) Which is not a space vacuum related issue?
- A.
Outgassing.
- B.
Heat transfer.
- C.
Cold welding.
- D.
Radiation exposure.
- 30.(205) Which method works as a transfer method for moving heat away from a spacecraft?
- A.
Radiation.
- B.
Convection.
- C.
Conduction.
- D.
Thermal isolation.
- 31.(205) How does the Herschel space telescope cool certain parts to function properly?
- A.
Using liquid helium.
- B.
Using liquid nitrogen.
- C.
Circulating cold air around the parts.
- D.
Using water from air conditioning units.
- 32.(206) What is the offset between the earth’s magnetic field axis and the center rotational axis?
- A.
5°.
- B.
7°.
- C.
9°.
- D.
11°.
- 33.(206) Which part of the earth’s atmosphere does the Space X–37B leave before it enters space?
- A.
Ionosphere.
- B.
Mesosphere.
- C.
Troposphere.
- D.
Stratosphere.
- 34.(206) What type of spacecraft charging only lasts for microseconds due to plasma changing uniformly?
- A.
Bulk.
- B.
Solar.
- C.
Absolute.
- D.
Differential.
- 35.(206) What type of spacecraft charging is hazardous to the satellite’s internal electronics systems?
- A.
Bulk.
- B.
Solar.
- C.
Absolute.
- D.
Differential.
- 36.(206) Which is a space object that travels around the sun at speeds averaging 93,600 mph?
- A.
Comet.
- B.
Meteor.
- C.
Meteorite.
- D.
Meteoroid.
- 37.(206) Which is a space object that glows at about 40 and 75 miles above the earth?
- A.
Comet.
- B.
Meteor.
- C.
Meteorite.
- D.
Meteoroid.
- 38.(207) Which ellipse parameter is the gravitational center of the body about which the satellite orbits?
- A.
Apogee.
- B.
Perigee.
- C.
Occupied/primary focus.
- D.
Unoccupied/secondary focus.
- 39.(207) Which element of an ellipse is the intersection between the major and minor axis?
- A.
Apogee.
- B.
Focal length.
- C.
Apogee height.
- D.
Geometric center.
- 40.(207) Who was the first person to use the word ‘satellite’ and developed three laws of planetary motion?
- A.
Copernicus.
- B.
Galileo Galilei.
- C.
Johannes Kepler.
- D.
Sir Isaac Newton.
- 41.(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
- A.
Law of areas.
- B.
Law of periods.
- C.
Law of ellipses.
- D.
Law of universal attraction.
- 42.(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
- A.
First law of motion.
- B.
Second law of motion.
- C.
Third law of motion.
- D.
Law of universal gravitation.
- 43.(207) “A body acted upon by a constant force will move with a constant acceleration in the direction of the force” identifies Newton’s
- A.
First law of motion.
- B.
Second law of motion.
- C.
Third law of motion.
- D.
Law of universal gravitation.
- 44.(207) What happens when you move a satellite away from the earth?
- A.
Increase mass.
- B.
Increase velocity.
- C.
Increase the radius.
- D.
Decrease the radius.
- 45.(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?
- A.
Period.
- B.
Epoch time.
- C.
Right ascension.
- D.
Argument of perigee.
- 46.(208) Which orbital component is used when acquiring a satellite using a tracking station?
- A.
Period.
- B.
Epoch time.
- C.
Right ascension.
- D.
Argument of perigee.
- 47.(208) How many minutes can the period be for a satellite that is re-entering the atmosphere?
- A.
66.
- B.
88.
- C.
89.
- D.
99.
- 48.(209) What is it called when the launch site is used to determine where a ground trace starts?
- A.
Period.
- B.
Inclination.
- C.
Eccentricity.
- D.
Injection point.
- 49.(209) What kind of day is it if the earth takes 1436.07 minutes to rotate about its axis with respect to the sun?
- A.
Solar day.
- B.
Lunar day.
- C.
Sidereal day.
- D.
Celestial day.
- 50.(209) If a satellite has a period of 448 minutes, what type of orbit is it in?
- A.
Near-Earth orbit.
- B.
Deep space orbit.
- C.
Geosynchronous orbit.
- D.
Semi-synchronous orbit.
- 51.(209) What type of orbit is the International Space Station (ISS) in?
- A.
Low-Earth orbit.
- B.
Deep space orbit.
- C.
Geosynchronous orbit.
- D.
Semi-synchronous orbit.
- 52.(209) The period of a low-Earth orbit (LEO) is approximately
- A.
80 minutes.
- B.
90 minutes.
- C.
99 minutes.
- D.
120 minutes.
- 53.(209) What type of orbit is a geostationary satellite in?
- A.
Equatorial orbit.
- B.
Highly elliptical orbit.
- C.
Geosynchronous orbit.
- D.
Sun-synchronous orbit.
- 54.(209) A satellite’s ground track with nodal regression successively tracks
- A.
Eastward.
- B.
Westward.
- C.
Northward.
- D.
Southward.
- 55.(209) Which coordinate system uses the prime meridian as a fundamental component?
- A.
Orbit.
- B.
Geocentric.
- C.
Geographic
- D.
Topocentric.
- 56.(209) Which coordinate system uses a first point of Aries (vernal equinox) as a fundamental component?
- A.
Orbit.
- B.
Geocentric.
- C.
Geographic.
- D.
Topocentric.
- 57.(210) Which class of maneuver enables the Space X–37B to dock with the International Space Station (ISS)?
- A.
In-plane.
- B.
Transfer.
- C.
Rendezvous.
- D.
Out-of-plane.
- 58.(210) What is always common to the pre-thrust and post-thrust orbits?
- A.
Perigee.
- B.
Apogee.
- C.
Inclination.
- D.
Thrust point.
- 59.(210) Which maneuver is the slowest and uses fuel in the most efficient way?
- A.
Fast transfer.
- B.
Rendezvous.
- C.
Out-of-plane.
- D.
Hohmann transfer.
- 60.(210) What is the disadvantage of the fast transfer?
- A.
Slowest maneuver.
- B.
Uses 50 percent more fuel.
- C.
Too difficult to perform safely.
- D.
Requires a satellite to swing around another object.
- 61.(210) Which out-of-plane maneuver has an in-plane component?
- A.
Simple.
- B.
Combined.
- C.
Rendezvous.
- D.
Hohmann transfer.
- 62.(210) In what direction do the ascending/descending nodes move when a north thrust is applied?
- A.
East.
- B.
West.
- C.
South.
- D.
North.
- 63.(210) When a satellite is traveling in a south direction and a north thrust is applied, the inclination
- A.
Increases.
- B.
Decreases.
- C.
Stays the same.
- D.
Doubles by half.
- 64.(211) Which part of space situational awareness keeps track of enemy satellites?
- A.
Solar day
- B.
Laser deconfliction.
- C.
Telemetry, tracking and control (TT&C).
- D.
Satellite Reconnaissance Advance Notice (SATRAN).
- 65.(211) Which is true about a fast transfer versus a Hohmann transfer?
- A.
More efficient and cost less.
- B.
More efficient and cost more.
- C.
Less efficient and cost less.
- D.
Less efficient and cost more.
- 66.(211) Which type of rendezvous has the interceptor waiting in a phasing orbit?
- A.
Coplanar.
- B.
Co-orbital.
- C.
Fast transfer.
- D.
Hohmann transfer.
- 67.(211) Which target satellite helps the chase satellite with position and velocity updates?
- A.
Cooperative.
- B.
Unintentional.
- C.
Uncooperative.
- D.
Non-cooperative.
- 68.(211) Which target satellite forces the chase satellite to have information independence?
- A.
Cooperative.
- B.
Unintentional.
- C.
Uncooperative.
- D.
Non-cooperative.
- 69.(211) Which target satellite interferes with the chase satellite?
- A.
Cooperative.
- B.
Unintentional.
- C.
Uncooperative.
- D.
Non-cooperative.
- 70.(211) Which type of burn must be performed at the nodal crossing?
- A.
In-plane.
- B.
Posigrade.
- C.
Retrograde.
- D.
Out-of-plane.
- 71.(212) Which part of the electromagnetic (EM) spectrum would you use to communicate with the International Space Station (ISS)?
- A.
Radio spectrum.
- B.
Optical spectrum.
- C.
Infrared spectrum.
- D.
Ultraviolet wave spectrum.
- 72.(212) Which radio frequency supports the mission of Global Positioning Systems (GPS)?
- A.
Very high frequency (VHF).
- B.
Ultrahigh frequency (UHF).
- C.
Super high frequency (SHF).
- D.
Extremely high frequency (EHF).
- 73.(212) Which radio frequency supports the mission of Wideband Global SATCOM?
- A.
Very high frequency (VHF).
- B.
Ultrahigh frequency (UHF).
- C.
Super high frequency (SHF).
- D.
Extremely high frequency (EHF).
- 74.(212) Which region of the ultraviolet (UV) light wavelength is the most energetic?
- A.
Far UV.
- B.
Near UV.
- C.
Close UV.
- D.
Extreme UV.
- 75.(212) Which part of the electromagnetic (EM) spectrum has wavelengths ranging between 0.03 and 3 nanometers?
- A.
X-ray.
- B.
Infrared.
- C.
Gamma-rays.
- D.
Ultraviolet waves.
- 76.(213) Which technique lowers the power of a signal to below background noise?
- A.
Spread spectrum.
- B.
Time division multiple access.
- C.
Direct sequence spread spectrum.
- D.
Frequency hopping spread spectrum.
- 77.(213) Which multiple access method overlaps the signals and their frequencies?
- A.
Code division multiple access (CDMA).
- B.
Time division multiple access (TDMA).
- C.
Demand assigned multiple access (DAMA).
- D.
Frequency division multiple access (FDMA).
- 78.(213) Which radio frequency (RF) is also known as longwave?
- A.
Low frequency (LF).
- B.
Medium frequency (MF).
- C.
Very low frequency (VLF).
- D.
Very high frequency (VHF).
- 79.(213) Which radio frequency (RF) is used for frequency modulation (FM) radio broadcasts?
- A.
Low frequency (LF).
- B.
Medium frequency (MF).
- C.
Very low frequency (VLF).
- D.
Very high frequency (VHF).
- 80.(214) Which component of a signal is where information is attached before transmission?
- A.
Sine wave.
- B.
Phase wave.
- C.
Carrier wave.
- D.
Ground wave.
- 81.(215) Which component of the communications segment performs the commanding of sensors?
- A.
Uplink signal.
- B.
Downlink signal.
- C.
Control link.
- D.
Mission link.
- 82.(215) Which component of the communications segment transmits the satellite’s operational data?
- A.
Ground segment.
- B.
Airborne segment.
- C.
Control links.
- D.
Mission links.
- 83.(215) What type of interference does an adversary use to appear as an authorized user to send false commands?
- A.
Spoofing.
- B.
Link jamming.
- C.
Uplink jamming.
- D.
Downlink jamming.
- 84.(216) What is the decibel used to define on an antenna?
- A.
Amplifier losses.
- B.
Amplifier gains.
- C.
Component gains.
- D.
Noise losses.
- 85.(216) Which decibel (dB) value represents 100?
- A.
0 dB.
- B.
10 dB.
- C.
20 dB.
- D.
40 dB.
- 86.(216) What happens when you convert a decibel to a number by subtracting the decibel value?
- A.
Multiply linear values.
- B.
Divide linear values.
- C.
Double linear values.
- D.
Subtract linear values.
- 87.(216) Which decibel digit represents the integer factor?
- A.
Leftmost.
- B.
Center.
- C.
Rightmost.
- D.
Linear number.
- 88.(216) What does a signal gain of 100 percent equal in dB power?
- A.
3.
- B.
6.
- C.
9.
- D.
10.
- 89.(217) Which type of antenna has an increase in power that emits radiation in specific directions?
- A.
Low-gain.
- B.
High-gain.
- C.
Medium-gain.
- D.
Ultrahigh gain.
- 90.(217) How is the linear polarization oriented for a geo-stationary satellite that is parallel to the earth’s axis?
- A.
Vertical.
- B.
Circular.
- C.
Elliptical.
- D.
Horizontal.
- 91.(217) Which antenna polarization is predominantly used for space communications?
- A.
Vertical.
- B.
Circular.
- C.
Elliptical.
- D.
Horizontal.
- 92.(217) If the antenna is pointed at the receiver, then what is the main beam pointed at?
- A.
Center.
- B.
Boresight.
- C.
Lobesight.
- D.
Center focus.
- 93.(217) Which subsystem loss is from absorbing oxygen and water vapor?
- A.
Equipment loss.
- B.
Free space loss.
- C.
Atmospheric and rain loss.
- D.
Antenna tracking error loss.
- 94.(217) Which antenna component is designed to perform data transmission, reception, and tracking?
- A.
Filter.
- B.
Diplexer.
- C.
Waveguide.
- D.
Feed assembly.
- 95.(217) Which antenna tracking mode loads a time table of coordinates into the ground station computer?
- A.
Autotrack.
- B.
Slave mode.
- C.
Forced track.
- D.
Manual track.
- 96.(217) What tracking method uses the ground equipment to transmit equally time spaced pulses to the satellite?
- A.
Passive.
- B.
Passive beacon.
- C.
Passive beacon.
- D.
Pseudo-random noise.
- 97.(217) What tracking method is a precise digital ranging signal modulated onto the uplink carrier?
- A.
Passive.
- B.
Passive beacon.
- C.
Beacon transponder.
- D.
Pseudo-random noise.
- 98.(218) Which frequency is not used in military satellite communication (SATCOM)?
- A.
Very high frequency.
- B.
Ultrahigh frequency.
- C.
Super high frequency.
- D.
Extremely high frequency.
- 99.(218) Which satellite communication (SATCOM) system uses ultrahigh frequencies to transmit to small tactical terminals?
- A.
Gapband.
- B.
Protected.
- C.
Wideband.
- D.
Narrowband.
- 100.(218) Which satellite communication (SATCOM) system is broken out into three segments?
- A.
Global Positioning System (GPS).
- B.
Wideband Global Satellite (WGS).
- C.
Military Strategic and Tactical Relay (Milstar).
- D.
Advanced extremely high frequency (AEHF).
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