3D1X3 Vol 3 CDC Ed2
3d1x3 Vol 3 CDC Ed2
- 1.
(401) In the tropospheric scatter mode, the high power amplifier amplifies the radio frequency to
- A.
1 milliwatt.
- B.
1 watt.
- C.
100 watt.
- D.
1 kilowatt.
Correct Answer
D. 1 kilowatt.Explanation
In the tropospheric scatter mode, the high power amplifier is used to amplify the radio frequency signal. The correct answer is 1 kilowatt because it is the highest power level mentioned among the options. A higher power amplifier is required in tropospheric scatter communication to overcome the signal attenuation caused by the scattering of radio waves in the troposphere.Rate this question:
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- 2.
(401) Which type of diversity requires two antennas, two receivers, and two transmitters?
- A.
Polarization.
- B.
Crossband.
- C.
Frequency.
- D.
Space.
Correct Answer
A. Polarization.Explanation
Polarization diversity requires two antennas, two receivers, and two transmitters. Polarization refers to the orientation of the electromagnetic waves in an antenna. By using two antennas with different polarization orientations, the system can receive and transmit signals from different angles. This helps to improve the signal quality and reduce interference. Crossband diversity refers to using different frequency bands, frequency diversity refers to using different frequencies, and space diversity refers to using multiple antennas at different locations.Rate this question:
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- 3.
(401) The MD–1026 digital data modem can interface up to four groups of, which type of signals?
- A.
Balanced non-return-to-zero (NRZ).
- B.
Conditioned diphase.
- C.
Unbalanced NRZ.
- D.
Isochronous.
Correct Answer
B. Conditioned diphase.Explanation
The MD-1026 digital data modem can interface up to four groups of conditioned diphase signals.Rate this question:
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- 4.
(401) The trunk group multiplexer TD–1236 can multiplex up to
- A.
One group of the 512 Kbps data rate family.
- B.
One group of the 576 Kbps data rate family.
- C.
Four groups of the 512 Kbps data rate families or 576 Kbps data rate families.
- D.
Four groups of the 12 Kbps data rate families and 576 Kbps data rate families.
Correct Answer
C. Four groups of the 512 Kbps data rate families or 576 Kbps data rate families.Explanation
The trunk group multiplexer TD-1236 has the capability to multiplex up to four groups of the 512 Kbps data rate families or 576 Kbps data rate families. This means that it can combine the data from multiple groups of either the 512 Kbps or 576 Kbps data rates into a single stream for transmission.Rate this question:
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- 5.
(401) Digital voice orderwire traffic that originates at the AN/TRC–170’s voice orderwire control unit, is encrypted by the
- A.
KY–68.
- B.
KY–58.
- C.
KG–84.
- D.
KG–81.
Correct Answer
B. KY–58.Explanation
The correct answer is KY-58. This is because the KY-58 is a device used for encryption, specifically for voice communications. It is commonly used in military applications, such as the AN/TRC-170 voice orderwire control unit. Therefore, it makes sense that the digital voice orderwire traffic originating from the AN/TRC-170's voice orderwire control unit would be encrypted using the KY-58.Rate this question:
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- 6.
(401) Which jack field in the AN/TRC–170’s baseband patch panel provides timing and data connections?
- A.
Middle.
- B.
Center.
- C.
Upper.
- D.
Lower.
Correct Answer
C. Upper.Explanation
The upper jack field in the AN/TRC-170's baseband patch panel provides timing and data connections.Rate this question:
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- 7.
(401) The tropospheric scatter modem processes mission traffic at data rates of 128 through 4,096 Kbps, within which data rate family?
- A.
512 Kbps.
- B.
576 Kbps.
- C.
1,024 Kbps.
- D.
1,152 Kbps.
Correct Answer
A. 512 Kbps.Explanation
The correct answer is 512 Kbps. The question asks about the data rate family within which the tropospheric scatter modem processes mission traffic. The given data rates of 128 through 4,096 Kbps fall within the 512 Kbps data rate family.Rate this question:
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- 8.
(401) Which unit in the AN/TRC–170 terminal contains the rubidium standard?
- A.
Electrical synthesizer.
- B.
Frequency subsystem.
- C.
Tropospheric scatter modem.
- D.
Transmitter-amplifier converter.
Correct Answer
C. Tropospheric scatter modem.Explanation
The rubidium standard is a highly accurate and stable atomic clock that is used to maintain precise timing in communication systems. In the AN/TRC-170 terminal, the rubidium standard is contained within the tropospheric scatter modem unit. This unit is responsible for transmitting and receiving signals over long distances via tropospheric scatter communication, and it requires accurate timing provided by the rubidium standard to ensure reliable and synchronized communication.Rate this question:
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- 9.
(401) The quick reaction antenna for the V3 AN/TRC–170 terminal uses how many linearly dualpolarized antennas?
- A.
Two 6-foot-diameter.
- B.
Four 6-foot-diameter.
- C.
Two 9.5-foot-diameter.
- D.
Four 9.5-foot-diameter.
Correct Answer
A. Two 6-foot-diameter.Explanation
The quick reaction antenna for the V3 AN/TRC-170 terminal uses two 6-foot-diameter linearly dual-polarized antennas.Rate this question:
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- 10.
(402) The Tropo/Satellite Support Radio frequency coverage extends from
- A.
4.4 to 5.25 GHz.
- B.
7.25 to 8.4 GHz.
- C.
14.4 to 15.25 GHz.
- D.
17.25 to 18.4 GHz.
Correct Answer
C. 14.4 to 15.25 GHz.Explanation
The correct answer is 14.4 to 15.25 GHz. This frequency range is within the Tropo/Satellite Support Radio frequency coverage.Rate this question:
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- 11.
(402) Which maximum distance in miles can a Tropo/Satellite Support Radio operate with the 2- foot antenna?
- A.
9
- B.
24
- C.
90
- D.
240
Correct Answer
B. 24Explanation
A Tropo/Satellite Support Radio with a 2-foot antenna can operate at a maximum distance of 24 miles.Rate this question:
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- 12.
(402) What is the maximum distance in feet the Tropo/Satellite Support Radio’s radio frequency and baseband assemblies can be separated?
- A.
50
- B.
100
- C.
150
- D.
200
Correct Answer
C. 150Explanation
The maximum distance in feet that the Tropo/Satellite Support Radio's radio frequency and baseband assemblies can be separated is 150.Rate this question:
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- 13.
(402) In the Tropo/Satellite Support Radio’s baseband assembly, a 1-volt peak-to-peak input signal results in how much frequency deviation in the transmitter?
- A.
±4 MHz.
- B.
Less than ±4 MHz.
- C.
More than ±4 MHz.
- D.
No signal deviation.
Correct Answer
A. ±4 MHz.Explanation
A 1-volt peak-to-peak input signal in the Tropo/Satellite Support Radio's baseband assembly results in a frequency deviation of ±4 MHz in the transmitter. This means that the frequency of the transmitted signal will vary by up to 4 MHz above and below its center frequency.Rate this question:
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- 14.
(402) Which frequency is the intermediate frequency of the Tropo/Satellite Support Radio?
- A.
70 MHz with a 10 MHz bandpass.
- B.
70 MHz with a 20 MHz bandpass.
- C.
700 MHz with a 10 MHz bandpass.
- D.
700 MHz with a 20 MHz bandpass.
Correct Answer
B. 70 MHz with a 20 MHz bandpass.Explanation
The intermediate frequency of the Tropo/Satellite Support Radio is 70 MHz. The bandpass is 20 MHz, meaning that the radio can receive signals within a range of 20 MHz centered around the intermediate frequency.Rate this question:
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- 15.
(403) What is the inclination angle of a polar orbit?
- A.
0°.
- B.
45°.
- C.
90°.
- D.
180°.
Correct Answer
C. 90°.Explanation
The inclination angle of a polar orbit is 90°. In a polar orbit, the satellite passes over or near the poles of the planet it is orbiting. This means that the satellite's orbit is perpendicular to the equator, resulting in an inclination angle of 90°.Rate this question:
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- 16.
(403) What is the procedure called when keeping a satellite in a desired position, in orbit and within acceptable limits?
- A.
Shift.
- B.
Period.
- C.
Air drag.
- D.
Station keeping.
Correct Answer
D. Station keeping.Explanation
Station keeping is the procedure used to maintain a satellite in its desired position within an orbit and within acceptable limits. This involves making small adjustments to the satellite's orbit using thrusters or other propulsion systems to counteract the effects of gravitational forces and other factors that may cause the satellite to drift off course. Station keeping is essential for satellites that provide services such as communication, weather monitoring, and navigation, as it ensures that they remain in the correct position to fulfill their intended functions.Rate this question:
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- 17.
(404) Which satellite reflects signals transmitted toward it?
- A.
Active.
- B.
Delay.
- C.
Passive.
- D.
Real-time.
Correct Answer
C. Passive.Explanation
Passive satellites reflect signals transmitted toward them without any active involvement or processing. They do not generate or amplify the signals but simply bounce them back to the sender. This is different from active satellites that have their own transmitters and actively transmit signals to the receiver. Therefore, the correct answer is passive.Rate this question:
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- 18.
(404) An advantage of passive satellites is that they
- A.
Have a larger transmitter power.
- B.
Have a larger antenna system.
- C.
Have more sensitive equipment.
- D.
Operate over a wider-frequency range.
Correct Answer
D. Operate over a wider-frequency range.Explanation
Passive satellites have the advantage of operating over a wider-frequency range. This means that they can receive and transmit signals across a broader spectrum of frequencies compared to other types of satellites. This flexibility allows passive satellites to be used for various purposes, such as communication, weather monitoring, and scientific research, as they can handle a wider range of signals and frequencies.Rate this question:
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- 19.
(404) What is the seconds delay of a real-time satellite?
- A.
0.1.
- B.
0.6.
- C.
1.0.
- D.
6.0.
Correct Answer
B. 0.6.Explanation
The correct answer is 0.6. This suggests that the seconds delay of a real-time satellite is 0.6 seconds. This delay refers to the time it takes for signals to travel from the satellite to Earth and vice versa.Rate this question:
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- 20.
(405) Which satellite access technique was the first multiple access method developed?
- A.
Code division multiple access (CDMA).
- B.
Time division multiple access (TDMA).
- C.
Demand assigned multiple access (DAMA).
- D.
Frequency division multiple access (FDMA).
Correct Answer
D. Frequency division multiple access (FDMA).Explanation
Frequency division multiple access (FDMA) was the first multiple access method developed. FDMA divides the frequency spectrum into multiple channels, with each user being assigned a specific frequency band. This allows multiple users to share the same physical medium without interfering with each other. CDMA, TDMA, and DAMA are all subsequent developments in multiple access techniques.Rate this question:
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- 21.
(405) Which satellite access technique is being used when all channels are pooled and used by any station, according to its instantaneous traffic load?
- A.
Code division multiple access (CDMA).
- B.
Time division multiple access (TDMA).
- C.
Demand assigned multiple access (DAMA).
- D.
Frequency division multiple access (FDMA).
Correct Answer
C. Demand assigned multiple access (DAMA).Explanation
Demand assigned multiple access (DAMA) is the satellite access technique where all channels are pooled and used by any station, according to its instantaneous traffic load. This means that stations are assigned channels on demand based on their current traffic needs. This allows for efficient use of satellite resources and ensures that no channel is wasted or left unused. CDMA, TDMA, and FDMA are not suitable explanations as they do not specifically address the pooling and dynamic allocation of channels based on traffic load.Rate this question:
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- 22.
(406) To calculate look angles (e.g. antenna azimuth and elevation) from the ground terminal to the satellite, you need to know the terminal’s latitude and longitude, as well as the satellite’s latitude, longitude, and
- A.
Velocity.
- B.
Height.
- C.
Speed.
- D.
Depth.
Correct Answer
B. Height.Explanation
To calculate look angles from the ground terminal to the satellite, you need to know the terminal's latitude and longitude, as well as the satellite's latitude, longitude, and height. The height of the satellite is an important factor in determining the look angles because it affects the line of sight between the terminal and the satellite. The higher the satellite's height, the larger the elevation angle will be. Therefore, knowing the height of the satellite is necessary to accurately calculate the look angles.Rate this question:
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- 23.
(406) When computing satellite look angles, the ground distance on the earth’s surface is expressed in
- A.
Degrees.
- B.
Seconds.
- C.
Minutes.
- D.
Nautical miles.
Correct Answer
A. Degrees.Explanation
When computing satellite look angles, the ground distance on the earth's surface is expressed in degrees. This is because look angles are typically measured in terms of the angle of elevation and azimuth, which are both expressed in degrees. The ground distance is the distance between the observer on the ground and the satellite, and it is commonly measured in terms of the angle it forms with the observer's position. Therefore, degrees is the appropriate unit to express the ground distance in this context.Rate this question:
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- 24.
(406) What does one degree of arc on the Earth’s surface equal?
- A.
One statute mile.
- B.
One nautical mile.
- C.
69 statute miles.
- D.
69 nautical miles.
Correct Answer
C. 69 statute miles.Explanation
One degree of arc on the Earth's surface equals 69 statute miles. This means that if you were to travel along a line of longitude or latitude for one degree, you would cover a distance of 69 statute miles. This measurement is commonly used in navigation and cartography to determine distances on the Earth's surface.Rate this question:
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- 25.
(407) Solar time is based on
- A.
Atomic clock oscillations.
- B.
Apparent constellation movement.
- C.
The moon’s rotation about the sun.
- D.
The apparent motion of the sun in the sky.
Correct Answer
D. The apparent motion of the sun in the sky.Explanation
Solar time is based on the apparent motion of the sun in the sky. Solar time is the time measured by the position of the sun in relation to a specific location on Earth. It is based on the concept that the sun appears to move across the sky from east to west due to the rotation of the Earth. This motion of the sun is used as a reference for measuring time, with each day divided into 24 hours based on the sun's position. Atomic clock oscillations, apparent constellation movement, and the moon's rotation about the sun are not directly related to the measurement of solar time.Rate this question:
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- 26.
(407) An atomic time scale could be based on the frequency of what type of oscillator?
- A.
Pendulum.
- B.
Crystal.
- C.
Quartz.
- D.
Cesium.
Correct Answer
D. Cesium.Explanation
An atomic time scale can be based on the frequency of a cesium oscillator. Cesium atomic clocks are extremely accurate and reliable, as they measure the vibrations of cesium atoms to determine the exact length of a second. This frequency is used as the basis for atomic time scales, such as Coordinated Universal Time (UTC), which is used worldwide for precise timekeeping. Pendulums, crystals, and quartz are not used for atomic timekeeping as they are not as precise and stable as cesium oscillators.Rate this question:
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- 27.
(408) What kind of clock system is coordinated universal time (UTC) based?
- A.
12-hour.
- B.
24-hour.
- C.
Daylight saving.
- D.
Amplitude modulation and pulse modulation.
Correct Answer
B. 24-hour.Explanation
Coordinated Universal Time (UTC) is based on a 24-hour clock system. This means that the time is divided into 24 equal parts, with each hour consisting of 60 minutes and each minute consisting of 60 seconds. This system allows for a standardized and consistent way of measuring time across different time zones and regions.Rate this question:
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- 28.
(409) A number of organizations can maintain accurate time-of-day clocks by referencing a standard time interval of one
- A.
Second.
- B.
Minute.
- C.
Hour.
- D.
Day.
Correct Answer
A. Second.Explanation
Organizations can maintain accurate time-of-day clocks by referencing a standard time interval of one second. This is because a second is the smallest unit of time and provides the most precise measurement for maintaining accurate clocks. By synchronizing their clocks to a standard second, organizations can ensure that their timekeeping is consistent and reliable.Rate this question:
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- 29.
(409) The agency responsible for coordinated universal time (UTC) is the
- A.
United States Naval Observatory (USNO).
- B.
International Bureau of Weights and Measures (BIPM).
- C.
Precision Measurement Equipment Laboratory (PMEL).
- D.
National Institute of Standards and Technology (NIST).
Correct Answer
B. International Bureau of Weights and Measures (BIPM).Explanation
The International Bureau of Weights and Measures (BIPM) is responsible for coordinating universal time (UTC). UTC is a time standard used worldwide to ensure time synchronization across different countries and regions. The BIPM is an international organization that maintains and disseminates accurate and reliable measurements, including timekeeping. They work closely with national metrology institutes, such as the United States Naval Observatory (USNO), the Precision Measurement Equipment Laboratory (PMEL), and the National Institute of Standards and Technology (NIST), to ensure the accuracy and consistency of UTC.Rate this question:
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- 30.
(409) Uploading satellite control data, tracking missiles, and predicting satellite tracking coordinates are examples of missions where all parties involved must have
- A.
Offset timing.
- B.
Synchronized timing.
- C.
Identical time code formats.
- D.
Different time code formats.
Correct Answer
B. Synchronized timing.Explanation
In missions such as uploading satellite control data, tracking missiles, and predicting satellite tracking coordinates, it is crucial for all parties involved to have synchronized timing. This means that all parties must have their clocks and timing systems precisely aligned in order to ensure accurate and coordinated actions. Having synchronized timing allows for smooth communication and coordination between different systems and ensures that all parties are operating on the same timeline.Rate this question:
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- 31.
(410) When any frequency source regardless of its accuracy or stability is used as the sole calibration reference for other frequency sources, what kind of standard is it?
- A.
First generation.
- B.
Secondary.
- C.
Primary.
- D.
Class I.
Correct Answer
C. Primary.Explanation
When any frequency source, regardless of its accuracy or stability, is used as the sole calibration reference for other frequency sources, it is considered a primary standard. Primary standards are the highest level of measurement standards and are used to establish and maintain the accuracy and traceability of other measurement standards. They are typically based on fundamental physical constants and are the most accurate and stable standards available.Rate this question:
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- 32.
(410) What two factors cause a quartz oscillator’s resonant frequency to drift?
- A.
Humidity and aging.
- B.
Temperature and aging.
- C.
Humidity and operating frequency.
- D.
Temperature and operating frequency.
Correct Answer
B. Temperature and aging.Explanation
Temperature and aging are the two factors that cause a quartz oscillator's resonant frequency to drift. Temperature variations can affect the stability of the quartz crystal, causing its resonant frequency to change. Aging refers to the gradual degradation of the quartz crystal over time, which can also lead to a drift in the resonant frequency. Humidity and operating frequency do not directly impact the resonant frequency of a quartz oscillator.Rate this question:
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- 33.
(410) The operation of the atomic clock is based on the phenomenon that
- A.
Crystals resonate when an electric charge is applied.
- B.
Atoms release energy at a particular resonant frequency.
- C.
Atoms are sensitive to temperature and directional effects.
- D.
When atoms are split they produce predictable nuclear reactions.
Correct Answer
B. Atoms release energy at a particular resonant frequency.Explanation
The correct answer is "atoms release energy at a particular resonant frequency." Atomic clocks work by measuring the vibrations or oscillations of atoms. When atoms are excited, they release energy in the form of electromagnetic radiation at a specific frequency. This frequency is constant and can be used to accurately measure time. By counting the number of oscillations, an atomic clock can determine the passage of time with great precision.Rate this question:
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- 34.
(411) To send information over telephone lines, the modulator in a voice modem converts the
- A.
Audio signal into digital data.
- B.
Optical signal into digital data.
- C.
Digital data into an audio signal.
- D.
Digital data into an optical signal.
Correct Answer
C. Digital data into an audio signal.Explanation
The modulator in a voice modem is responsible for converting the audio signal into digital data. This is necessary in order to transmit the information over telephone lines, as digital data can be easily transmitted and received. Converting the digital data into an audio signal would not be necessary in this context, as the goal is to send the information digitally. Similarly, converting the digital data into an optical signal would not be applicable in this scenario, as telephone lines typically do not use optical signals for transmission.Rate this question:
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- 35.
(412) What is multiplexing?
- A.
Transmitting one signal over multiple transmission paths.
- B.
Transmitting one signal multiple times over a single transmission path.
- C.
Combining multiple signals for transmission over a single transmission path.
- D.
Combining multiple signals for transmission over separate, individual transmission paths.
Correct Answer
C. Combining multiple signals for transmission over a single transmission path.Explanation
Multiplexing refers to the process of combining multiple signals into a single transmission path. This allows for more efficient use of the transmission medium, as multiple signals can be transmitted simultaneously. By combining the signals, the overall bandwidth required for transmission is reduced, making it possible to transmit more information in a given time period. This is commonly used in telecommunications and networking to increase the capacity and efficiency of data transmission.Rate this question:
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- 36.
(412) Which division technique of multiplexing, samples each low speed channel in sequence to interleave bits or characters, and then transmit them at high speed?
- A.
Wavelength.
- B.
Frequency.
- C.
Code.
- D.
Time.
Correct Answer
D. Time.Explanation
The correct answer is Time. In time division multiplexing, low speed channels are sampled one after another, and their bits or characters are interleaved and transmitted at high speed. This allows multiple channels to share the same transmission medium and increases the overall efficiency of the system.Rate this question:
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- 37.
(412) What specifically does wavelength division multiplexing assign each incoming optical signal?
- A.
Pseudorandom code.
- B.
Frequency of light.
- C.
Radio frequency.
- D.
Time slot.
Correct Answer
B. Frequency of light.Explanation
Wavelength division multiplexing assigns each incoming optical signal a specific frequency of light. This means that different signals can be transmitted simultaneously over a single optical fiber by using different wavelengths of light to carry each signal. This allows for efficient use of the available bandwidth and enables multiple signals to be transmitted without interference.Rate this question:
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- 38.
(413) What comprises a telemetry data stream?
- A.
Mission data, mission satellite health, and status data.
- B.
Command data, mission satellite health, and status data.
- C.
Mission data, satellite ephemeris table, and satellite status data.
- D.
Command data, satellite ephemeris table, and satellite status data.
Correct Answer
A. Mission data, mission satellite health, and status data.Explanation
A telemetry data stream comprises mission data, mission satellite health, and status data. This means that the data stream includes information about the mission itself, the health of the satellite, and the status of the satellite.Rate this question:
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- 39.
(413) Stability is important to a satellite in the space environment. What does stability allow that makes it so important?
- A.
Payload to operate accurately and the satellite bus to receive commands and upload data reliably.
- B.
Payload to operate accurately and the satellite bus to receive uploaded inertial reference and data reliably.
- C.
Accelerometers to operate accurately and the satellite bus to receive commands and upload data reliably.
- D.
Accelerometers to operate accurately and the satellite bus to receive uploaded inertial reference and data reliably.
Correct Answer
A. Payload to operate accurately and the satellite bus to receive commands and upload data reliably.Explanation
Stability is important to a satellite in the space environment because it allows the payload to operate accurately and the satellite bus to receive commands and upload data reliably. Without stability, the satellite would not be able to perform its intended functions effectively and efficiently. The payload needs stability to ensure accurate operation, while the satellite bus relies on stability to receive commands and upload data without any disruptions or errors.Rate this question:
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- 40.
(413) On a satellite, position, and orientation control is especially critical for which type of antenna?
- A.
Broadband.
- B.
Wide angle.
- C.
High frequency.
- D.
Highly directional.
Correct Answer
D. Highly directional.Explanation
On a satellite, highly directional antennas are especially critical for position and orientation control. This is because highly directional antennas are designed to focus and concentrate the signal in a specific direction, allowing for precise communication with ground stations or other satellites. This level of control is necessary for accurate tracking and maintaining the satellite's desired position and orientation in space. Broadband, wide angle, and high frequency antennas may have their own advantages, but they do not offer the same level of precision and control as highly directional antennas in terms of position and orientation.Rate this question:
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- 41.
(414) The purpose of satellite antenna pointing data is to
- A.
Update the mission satellite orbital database and ephemeris table.
- B.
Update the mission satellite orbital database and satellite acquisition timing.
- C.
Direct the servo positioning equipment to drive motors that position the antenna to specific acquisition angles.
- D.
Direct the servo positioning equipment to position the antenna to specific acquisition angles, and command the ground equipment to execute autotracking.
Correct Answer
C. Direct the servo positioning equipment to drive motors that position the antenna to specific acquisition angles.Explanation
The purpose of satellite antenna pointing data is to direct the servo positioning equipment to drive motors that position the antenna to specific acquisition angles. This ensures that the antenna is accurately aligned with the satellite, allowing for optimal signal reception and transmission.Rate this question:
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- 42.
(414) This type of command, sent to the satellite by the space systems mission control complex, contains embedded timing that specifies the time the satellite will execute the command.
- A.
Real-time.
- B.
Time-delayed.
- C.
Timed program.
- D.
Stored program.
Correct Answer
D. Stored program.Explanation
A stored program is the correct answer because it refers to a type of command that is sent to the satellite and contains embedded timing. This means that the command includes specific instructions for when the satellite should execute the command. This type of command is stored within the satellite's system and executed at the specified time.Rate this question:
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- 43.
(415) What is the purpose of the space system user segment?
- A.
Receive, process, use, or distribute mission data as required by a program’s tasking.
- B.
Receive, process, use, or distribute payload data and provide essential space support tasks as required by a program’s tasking.
- C.
Transmit, process, use, or distribute mission data as required by a program’s tasking.
- D.
Transmit, process, use, or distribute payload data and provide essential space support tasks as required by a program’s tasking.
Correct Answer
A. Receive, process, use, or distribute mission data as required by a program’s tasking.Explanation
The purpose of the space system user segment is to receive, process, use, or distribute mission data as required by a program's tasking. This segment is responsible for handling the data generated by the space system and ensuring that it is properly utilized and shared according to the program's needs.Rate this question:
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- 44.
(415) The two major subdivisions of the Defense Meteorological Satellite Program (DMSP) user segment are
- A.
Air Force Weather Agency and the Fleet Numerical Meteorology Oceanography Center and tactical terminals.
- B.
Air Force Weather Agency and Fleet Numerical Meteorology Oceanography Center only.
- C.
Air Force Weather Agency and National Oceanographic Atmospheric Administration.
- D.
Fleet Numerical Meteorology Oceanography Center and National Oceanographic Atmospheric Administration and tactical terminals.
Correct Answer
A. Air Force Weather Agency and the Fleet Numerical Meteorology Oceanography Center and tactical terminals.Explanation
The correct answer is Air Force Weather Agency and the Fleet Numerical Meteorology Oceanography Center and tactical terminals. This answer is correct because it includes both major subdivisions of the Defense Meteorological Satellite Program (DMSP) user segment, which are the Air Force Weather Agency and the Fleet Numerical Meteorology Oceanography Center. Additionally, it mentions the inclusion of tactical terminals, which are also part of the DMSP user segment.Rate this question:
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- 45.
(415) Which early warning center receives Defense Support Program warning data from the 460th Space Wing units?
- A.
Air Force Weather Agency.
- B.
Mission Control Squadron.
- C.
Mission Control Command.
- D.
North American Aerospace Defense Command.
Correct Answer
D. North American Aerospace Defense Command.Explanation
The North American Aerospace Defense Command (NORAD) receives Defense Support Program warning data from the 460th Space Wing units. NORAD is responsible for aerospace warning and control for North America and is tasked with the detection, validation, and warning of any aerospace threat to the United States and Canada. As part of its mission, NORAD receives data from various sources, including the Defense Support Program, to monitor and respond to potential threats.Rate this question:
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- 46.
(415) What system supports the National Command Authority and provides all-service (Army, Navy and Air Force) communication for interoperable command, control, and communications (C3) at all levels of conflict?
- A.
Defense Support Program.
- B.
Global Positioning System.
- C.
Military Strategic and Tactical Relay.
- D.
Defense Satellite Communications System.
Correct Answer
C. Military Strategic and Tactical Relay.Explanation
The correct answer is Military Strategic and Tactical Relay. This system supports the National Command Authority and provides communication for interoperable command, control, and communications (C3) at all levels of conflict. The Defense Support Program is a satellite system used for early warning of missile launches. The Global Positioning System is a satellite-based navigation system. The Defense Satellite Communications System is a satellite communications system used by the Department of Defense.Rate this question:
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- 47.
(416) Telemetry refers to
- A.
A low power signal transmitted from the satellite and is separate from the communications components.
- B.
A low power signal transmitted from the satellite and is part of the communications components.
- C.
The data transmitted by the satellite concerning on-board status and is separate from the communications components.
- D.
The data transmitted by the satellite concerning on-board status and is part of the communications components.
Correct Answer
C. The data transmitted by the satellite concerning on-board status and is separate from the communications components.Explanation
Telemetry refers to the data transmitted by the satellite concerning on-board status and is separate from the communications components. This means that telemetry is a separate signal that carries information about the satellite's on-board status, such as its temperature, power levels, and other operational parameters. It is not part of the communications components, which are responsible for transmitting messages or data to and from the satellite.Rate this question:
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- 48.
(416) Automatic tracking systems are superior to programmed tracking systems because they
- A.
Use servomechanisms to control antenna movements.
- B.
Track only signals received from the satellite.
- C.
Track the actual position of the satellite.
- D.
Use updated ephemeris data.
Correct Answer
B. Track only signals received from the satellite.Explanation
Automatic tracking systems are superior to programmed tracking systems because they track only signals received from the satellite. This means that they are able to accurately follow the satellite's movements and adjust the antenna accordingly. By focusing only on the signals received from the satellite, these systems are able to provide more precise and reliable tracking compared to programmed systems that may rely on other data sources or calculations.Rate this question:
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- 49.
(417) The intermediate frequencies/levels used by Defense Satellite Communications System (DSCS) earth terminals are 70 MHz at
- A.
–10 dBm and 630 MHz @ –13 dBm.
- B.
–13 dBm and 630 MHz @ –10 dBm.
- C.
–10 dBm and 700 MHz @ –13 dBm.
- D.
–13 dBm and 700 MHz @ –10 dBm.
Correct Answer
C. –10 dBm and 700 MHz @ –13 dBm.Explanation
The correct answer is –10 dBm and 700 MHz @ –13 dBm. This means that the intermediate frequency used by Defense Satellite Communications System (DSCS) earth terminals is 700 MHz, while the power level is –10 dBm. Additionally, the power level at 630 MHz is –13 dBm.Rate this question:
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- 50.
(416) What signal originating from the satellite do we use to acquire and track the satellite?
- A.
Beacon.
- B.
Ephemeris.
- C.
Telemetry.
- D.
Communication.
Correct Answer
A. Beacon.Explanation
The signal originating from the satellite that we use to acquire and track the satellite is called the beacon.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
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Oct 23, 2013Quiz Created by
Fjeffkirk
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