CDC 3D153 Volume 3 V3 (April 2013)
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What kind of clock system is coordinated universal time (UTC) based?
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12-hour.
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24-hour.
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Daylight saving.
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Amplitude modulation and pulse modulation.
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CDC 3D153 01 1206, Edit Code 02 (April 2013)
Volume 3 Units 1-5
Unit 1: Wideband Communications.
Unit 2: Satellite Communications Fundamentals.
Unit 3: Multichannel Satellite Principles.
Unit 4: Satellite Systems
Unit 5: Network Bandwidth Management.
Quiz Preview
- 2.
Uploading satellite control data, tracking missiles, and predicting satellite tracking coordinates are examples of missions where all parties involved must have
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Offset timing.
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Synchronized timing.
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Identical time code formats.
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Different time code formats.
Correct Answer
A. 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 systems and devices need to be aligned and operating on the same time frame to ensure accurate and coordinated actions. Having synchronized timing allows for efficient communication, coordination, and execution of tasks, ultimately leading to successful mission outcomes.Rate this question:
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- 3.
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?
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First generation.
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Secondary.
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Primary.
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Class I.
Correct Answer
A. Primary.Explanation
When any frequency source is used as the sole calibration reference for other frequency sources, it is considered a primary standard. A primary standard is a highly accurate and stable reference that is used to calibrate and validate other instruments or standards. It is the highest level of standard in terms of accuracy and reliability, and it is typically traceable to national or international standards organizations.Rate this question:
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- 4.
Solar time is based on
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Atomic clock oscillations.
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Apparent constellation movement.
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The moon’s rotation about the sun.
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The apparent motion of the sun in the sky.
Correct Answer
A. 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 determined by the position of the sun in relation to a specific location on Earth. As the Earth rotates on its axis, the sun appears to move across the sky, causing shadows to shift. Solar time is calculated based on this apparent motion of the sun, with each day divided into 24 hours based on the sun's position at noon. This method of timekeeping is different from atomic clock oscillations, the moon's rotation about the sun, or apparent constellation movement.Rate this question:
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- 5.
An atomic time scale could be based on the frequency of what type of oscillator?
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Pendulum.
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Crystal.
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Quartz.
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Cesium.
Correct Answer
A. Cesium.Explanation
An atomic time scale could be based on the frequency of a cesium oscillator. Cesium atomic clocks are the most accurate and reliable timekeeping devices available. They work by measuring the vibrations of cesium atoms, which have a very stable and precise resonant frequency. This frequency is used as the basis for defining the second in the International System of Units (SI). By using cesium oscillators, atomic time scales can be established with extremely high accuracy and stability. Pendulums, crystals, and quartz are not suitable for creating atomic time scales as they do not have the same level of precision and stability as cesium.Rate this question:
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- 6.
What is the name of the companding scale used in US telephone networks, and standardized for analog-to-digital conversion?
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Metric.
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A-Law.
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Mμ-Law.
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Old English.
Correct Answer
A. Mμ-Law.Explanation
The correct answer is Mμ-Law. Mμ-Law is the name of the companding scale used in US telephone networks and standardized for analog-to-digital conversion. Companding is a process used to compress the dynamic range of audio signals for more efficient transmission and storage. Mμ-Law is specifically used in North America and Japan, while A-Law is used in Europe and other parts of the world. Old English and Metric are not relevant to the companding scale used in telephone networks.Rate this question:
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- 7.
What is the procedure called when keeping a satellite in a desired position, in orbit and within acceptable limits?
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Shift.
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Period.
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Air drag.
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Station keeping.
Correct Answer
A. Station keeping.Explanation
Station keeping refers to the procedure of maintaining a satellite in a desired position within its orbit and ensuring it stays within acceptable limits. This involves making adjustments to the satellite's trajectory and velocity to counteract the effects of gravitational forces, atmospheric drag, and other factors that can cause the satellite to drift off course. Station keeping is crucial for satellites that provide services such as communication, weather monitoring, and navigation, as it ensures their continuous coverage and functionality.Rate this question:
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- 8.
A number of organizations can maintain accurate time-of-day clocks by referencing a standard time interval of one
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Second.
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Minute.
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Hour.
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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 that can be measured accurately and precisely. By synchronizing their clocks to this standard, organizations can ensure that their timekeeping is consistent and reliable. Additionally, using a second as the standard time interval allows for easier coordination and communication between different organizations and systems that rely on accurate timekeeping.Rate this question:
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- 9.
What is multiplexing?
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Transmitting one signal over multiple transmission paths.
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Transmitting one signal multiple times over a single transmission path.
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Combining multiple signals for transmission over a single transmission path.
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Combining multiple signals for transmission over separate, individual transmission paths.
Correct Answer
A. 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 available bandwidth. Instead of using separate transmission paths for each signal, multiplexing enables multiple signals to be transmitted simultaneously over a single path. This can be achieved using various techniques such as time-division multiplexing (TDM) or frequency-division multiplexing (FDM). By combining multiple signals, multiplexing enables increased data transmission capacity and improved efficiency in communication systems.Rate this question:
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- 10.
What signal originating from the satellite do we use to acquire and track the satellite?
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Beacon.
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Ephemeris.
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Telemetry.
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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. The beacon is a specific type of signal that is transmitted by the satellite and can be received by ground stations. It is used to establish a connection with the satellite and track its movements and position. The beacon signal provides important information about the satellite's location, velocity, and timing, which is crucial for accurate tracking and communication with the satellite.Rate this question:
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- 11.
The MARK IVB product control subsystem uses, which type of operating system?
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NT.
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DOS.
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UNIX.
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Windows.
Correct Answer
A. UNIX.Explanation
The correct answer is UNIX. The MARK IVB product control subsystem utilizes UNIX as its operating system.Rate this question:
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- 12.
Which service provider is a new satellite communications company specifically dedicated to provide commercial X-band services exclusively to US and allied governments?
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International Telecommunications Satellite Organization.
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European Telecommunications Satellite Organization.
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Pan-American Satellite Corporation.
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XTAR.
Correct Answer
A. XTAR.Explanation
XTAR is the correct answer because it is a new satellite communications company that focuses on providing commercial X-band services exclusively to US and allied governments. The other options, such as International Telecommunications Satellite Organization and European Telecommunications Satellite Organization, do not specialize in X-band services or cater exclusively to US and allied governments. Pan-American Satellite Corporation is a general satellite communications company and not specifically dedicated to X-band services.Rate this question:
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- 13.
On a satellite, position, and orientation control is especially critical for which type of antenna?
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Broadband.
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Wide angle.
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High frequency.
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Highly directional.
Correct Answer
A. Highly directional.Explanation
Position and orientation control is especially critical for highly directional antennas because these antennas are designed to transmit and receive signals in a specific direction with a narrow beamwidth. Any deviation in the position or orientation of the antenna can result in a loss of signal strength or even complete signal failure. Therefore, precise control is necessary to ensure that the highly directional antenna is correctly aligned and pointed towards the desired target.Rate this question:
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- 14.
The secure mobile anti-jam reliable tactical terminal (SMART-T) provides user data rates through what type of cable?
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T–1 (128 Kbps).
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T–1 (256 Kbps).
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T–1 (1.544 Mbps).
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T–1 (2.048 Mbps).
Correct Answer
A. T–1 (1.544 Mbps).Explanation
The SMART-T provides user data rates through a T-1 cable with a speed of 1.544 Mbps. This means that the terminal can transmit and receive data at a rate of 1.544 million bits per second. This high-speed connection allows for reliable and secure communication, making it suitable for tactical operations.Rate this question:
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- 15.
What is the inclination angle of a polar orbit?
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0°.
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45°.
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90°.
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180°.
Correct Answer
A. 90°.Explanation
The inclination angle of a polar orbit is 90°. A polar orbit is a type of orbit where the satellite passes over or near the Earth's poles on each revolution. In this type of orbit, the satellite's path is perpendicular to the equator, resulting in an inclination angle of 90°. This allows the satellite to cover the entire globe and pass over all latitudes.Rate this question:
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- 16.
What two factors cause a quartz oscillator’s resonant frequency to drift?
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Humidity and aging.
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Temperature and aging.
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Humidity and operating frequency.
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Temperature and operating frequency.
Correct Answer
A. Temperature and aging.Explanation
A quartz oscillator's resonant frequency can drift due to temperature changes and aging. Temperature affects the quartz crystal's physical properties, causing its resonant frequency to change. Aging refers to the gradual degradation of the crystal over time, leading to a shift in its resonant frequency. Humidity and operating frequency do not directly cause the drift in the resonant frequency of a quartz oscillator.Rate this question:
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- 17.
Which mission is the most important of the Defense Support Program (DSP)?
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Theater warning.
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US retaliatory strike.
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North American warning.
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Worldwide space launches.
Correct Answer
A. North American warning.Explanation
The most important mission of the Defense Support Program (DSP) is the North American warning. This mission involves detecting and tracking ballistic missile launches aimed at North America, providing early warning to the United States and Canada. It plays a crucial role in ensuring the defense and security of North America by alerting authorities to potential threats and allowing for timely response and countermeasures.Rate this question:
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- 18.
Because they use differing conversion scales, which process must take place in order to transmit voice/data between telephone networks in the US and European countries?
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Encoding.
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Decoding.
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Quantizing.
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Transcoding.
Correct Answer
A. Transcoding.Explanation
Transcoding is the process that needs to take place in order to transmit voice/data between telephone networks in the US and European countries. This is because the US and European countries use differing conversion scales, meaning that the data needs to be converted or transcoded from one format to another in order to be properly understood and transmitted between the networks.Rate this question:
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- 19.
What is the logical connection between two nodes that consists of one or more trunks?
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Call.
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Port.
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Link.
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Hops.
Correct Answer
A. Link.Explanation
The logical connection between two nodes that consists of one or more trunks is called a link. A link refers to the physical or virtual connection between two devices or nodes in a network. It can be a wired or wireless connection and is responsible for transmitting data between the nodes. Trunks are used to carry multiple signals or data streams through a single link, allowing for efficient communication between the nodes. Therefore, the correct answer is "Link."Rate this question:
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- 20.
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?
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±4 MHz.
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Less than ±4 MHz.
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More than ±4 MHz.
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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.Rate this question:
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- 21.
Which satellite reflects signals transmitted toward it?
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Active.
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Delay.
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Passive.
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Real-time.
Correct Answer
A. Passive.Explanation
Passive satellites reflect signals transmitted toward them. Unlike active satellites, which generate and transmit their own signals, passive satellites simply reflect or bounce back signals that are transmitted from the ground. These satellites are commonly used for communication purposes, such as in satellite television or radio, where signals are transmitted from Earth to the satellite and then reflected back to a receiving station.Rate this question:
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- 22.
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
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Velocity.
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Height.
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Speed.
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Depth.
Correct Answer
A. 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 correct azimuth and elevation angles. Without knowing the height of the satellite, it would be impossible to accurately calculate the look angles. The other options, such as velocity, speed, and depth, are not relevant in this context and would not affect the calculation of look angles.Rate this question:
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- 23.
The agency responsible for coordinated universal time (UTC) is the
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United States Naval Observatory (USNO).
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International Bureau of Weights and Measures (BIPM).
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Precision Measurement Equipment Laboratory (PMEL).
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National Institute of Standards and Technology (NIST).
Correct Answer
A. International Bureau of Weights and Measures (BIPM).Explanation
The International Bureau of Weights and Measures (BIPM) is responsible for coordinating Universal Time Coordinated (UTC). UTC is the primary time standard used worldwide for civil timekeeping, ensuring that time is consistent and accurate across different locations. The BIPM, based in France, is an international organization that maintains the International System of Units (SI) and oversees the measurement standards used globally. It collaborates with various national timekeeping agencies to ensure the accuracy and synchronization of UTC. The United States Naval Observatory (USNO), Precision Measurement Equipment Laboratory (PMEL), and National Institute of Standards and Technology (NIST) are all involved in timekeeping and standards, but the BIPM is specifically responsible for UTC coordination.Rate this question:
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- 24.
The operation of the atomic clock is based on the phenomenon that
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Crystals resonate when an electric charge is applied.
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Atoms release energy at a particular resonant frequency.
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Atoms are sensitive to temperature and directional effects.
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When atoms are split they produce predictable nuclear reactions.
Correct Answer
A. 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 of atoms, particularly the oscillations of electrons within the atom. These oscillations occur at a specific frequency, known as the resonant frequency. By measuring these vibrations, atomic clocks can accurately keep time.Rate this question:
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- 25.
Who is a total bad ass?
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You want a 100%?
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You will have to answer this correctly, then.
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Pick what you know is right.
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>>>>Mikhail
Correct Answer
A. >>>>Mikhail -
- 26.
An advantage of passive satellites is that they
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Have a larger transmitter power.
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Have a larger antenna system.
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Have more sensitive equipment.
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Operate over a wider-frequency range.
Correct Answer
A. Operate over a wider-frequency range.Explanation
Passive satellites operate over a wider-frequency range. This means that they are capable of receiving and transmitting signals across a broader spectrum of frequencies. This advantage allows passive satellites to be more versatile and adaptable in their communication capabilities, as they can handle a wider variety of signals and frequencies. This flexibility is crucial in various applications, such as telecommunications, remote sensing, and scientific research, where different frequency bands may be required for different purposes.Rate this question:
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- 27.
What is the minimum number of global positioning system (GPS) satellites that must be tracked to have accurate three-dimensional navigation?
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Two.
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Three.
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Four.
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Five.
Correct Answer
A. Four.Explanation
To have accurate three-dimensional navigation using GPS, a minimum of four satellites must be tracked. This is because GPS works by using trilateration, which requires signals from at least four satellites to determine the precise position in three dimensions (latitude, longitude, and altitude). With fewer than four satellites, the accuracy of the navigation would be compromised. Therefore, tracking four GPS satellites is necessary for accurate three-dimensional navigation.Rate this question:
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- 28.
All approved satellite communication network requirements will be assigned a number and reside in the
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SATCOM Database (SDB).
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Core Automated Maintenance System (CAMS).
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Integrated Maintenance Database System (IMDS).
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Maintenance Management Information Center (MMIC).
Correct Answer
A. SATCOM Database (SDB).Explanation
The correct answer is SATCOM Database (SDB). This is because the question asks for the location where all approved satellite communication network requirements will be assigned a number and reside. The SATCOM Database (SDB) is the most suitable option as it is specifically designed to store and manage satellite communication network requirements. The other options mentioned, such as Core Automated Maintenance System (CAMS), Integrated Maintenance Database System (IMDS), and Maintenance Management Information Center (MMIC), are not specifically designed for this purpose.Rate this question:
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- 29.
What is the maximum distance in feet the Tropo/Satellite Support Radio’s radio frequency and baseband assemblies can be separated?
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50.
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100.
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150.
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200.
Correct Answer
A. 150.Explanation
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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- 30.
When computing satellite look angles, the ground distance on the earth’s surface is expressed in
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Degrees.
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Seconds.
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Minutes.
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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 used to determine the direction of the satellite from a specific point on the earth's surface. The ground distance is measured in degrees of latitude and longitude, which provide a precise and standardized way to describe locations on the earth's surface. Using degrees allows for accurate calculations and consistent communication of satellite positions.Rate this question:
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- 31.
The primary interface between the operator/maintainer and the MARK IVB system is the
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Storage disk array.
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Maintainer workstation.
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Network interface switch.
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Meteorological data server.
Correct Answer
A. Maintainer workstation.Explanation
The primary interface between the operator/maintainer and the MARK IVB system is the maintainer workstation. This implies that the maintainer workstation is the main tool or device used by the operator/maintainer to interact with and manage the MARK IVB system. The other options, such as the storage disk array, network interface switch, and meteorological data server, may play a role in the overall system but are not the primary interface for the operator/maintainer.Rate this question:
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- 32.
Which commercial satellite communication system can offer true pole-to-pole global coverage?
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European Telecommunications Satellite Organization (EUTELSAT).
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International Telecommunications Satellite Organization (INTELSAT).
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International Maritime Satellite Organization (INMARSAT).
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Iridium.
Correct Answer
A. Iridium.Explanation
Iridium is the correct answer because it is the only commercial satellite communication system that offers true pole-to-pole global coverage. While EUTELSAT, INTELSAT, and INMARSAT are all well-known satellite organizations, they do not provide coverage in the polar regions. Iridium, on the other hand, has a network of 66 satellites in low Earth orbit that can provide seamless coverage across the entire globe, including the poles.Rate this question:
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- 33.
Which agency does the regional satellite communications support center (RSSC) coordinate for additional satellite resources, if the planned deployment configuration cannot be supported by the satellite payload configuration?
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Ground mobile forces (GMF) network controller.
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Consolidated Space Operations Center (CSOC).
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Defense Information Systems Agency (DISA).
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Defense Information system Agency Network Operations Center (DISANOC).
Correct Answer
A. Defense Information Systems Agency (DISA).Explanation
The regional satellite communications support center (RSSC) coordinates with the Defense Information Systems Agency (DISA) for additional satellite resources when the planned deployment configuration cannot be supported by the satellite payload configuration. DISA is responsible for providing global information infrastructure to support the Department of Defense (DoD) and other government agencies. Therefore, it makes sense for the RSSC to coordinate with DISA in order to access additional satellite resources.Rate this question:
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- 34.
The trunk group multiplexer TD–1236 can multiplex up to
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One group of the 512 Kbps data rate family.
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One group of the 576 Kbps data rate family.
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Four groups of the 512 Kbps data rate families or 576 Kbps data rate families.
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Four groups of the 12 Kbps data rate families and 576 Kbps data rate families.
Correct Answer
A. Four groups of the 512 Kbps data rate families or 576 Kbps data rate families.Explanation
The trunk group multiplexer TD-1236 is capable of multiplexing four groups of either the 512 Kbps data rate families or the 576 Kbps data rate families. This means that it can handle a total of four groups, regardless of the specific data rate family.Rate this question:
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- 35.
Which maximum distance in miles can a Tropo/Satellite Support Radio operate with the 2- foot antenna?
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9.
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24.
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90.
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240.
Correct Answer
A. 24.Explanation
A Tropo/Satellite Support Radio with a 2-foot antenna can operate at a maximum distance of 24 miles. This means that the radio can transmit and receive signals within a radius of 24 miles, allowing for communication over long distances. The larger the antenna, the greater the range of the radio, so a 2-foot antenna limits the operating distance to 24 miles.Rate this question:
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- 36.
How are the high power amplifiers normally configured in the AN/GSC–52 earth terminal?
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One operating online with three cold standby.
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Two operating online with two hot standby.
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Three operating online with one hot standby.
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Four operating online with no hot standby.
Correct Answer
A. Three operating online with one hot standby.Explanation
The high power amplifiers in the AN/GSC-52 earth terminal are configured with three operating online and one hot standby. This means that three amplifiers are actively working to amplify the signal, while one amplifier is on standby and ready to take over in case any of the online amplifiers fail. This configuration ensures redundancy and uninterrupted signal amplification in case of equipment failure.Rate this question:
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- 37.
The MARK IVB antennas can be located up to how many feet away from the processing area?
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1000.
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1500.
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2500.
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3000.
Correct Answer
A. 1500.Explanation
The MARK IVB antennas can be located up to 1500 feet away from the processing area.Rate this question:
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- 38.
Which jack field in the AN/TRC–170’s baseband patch panel provides timing and data connections?
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Middle.
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Center.
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Upper.
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Lower.
Correct Answer
A. Upper.Explanation
The correct answer is "Upper." In the AN/TRC-170's baseband patch panel, the upper jack field provides both timing and data connections.Rate this question:
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- 39.
Which satellite access technique is being used when all channels are pooled and used by any station, according to its instantaneous traffic load?
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Code division multiple access (CDMA).
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Time division multiple access (TDMA).
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Demand assigned multiple access (DAMA).
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Frequency division multiple access (FDMA).
Correct Answer
A. Demand assigned multiple access (DAMA).Explanation
Demand assigned multiple access (DAMA) is the satellite access technique being used when all channels are pooled and used by any station, according to its instantaneous traffic load. DAMA allows stations to dynamically request and assign channels as needed, based on their traffic demands. This ensures efficient utilization of satellite resources and allows for flexible allocation of channels among multiple stations. CDMA, TDMA, and FDMA are not suitable for this scenario as they involve different methods of channel allocation.Rate this question:
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- 40.
What specifically does wavelength division multiplexing assign each incoming optical signal?
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Pseudorandom code.
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Frequency of light.
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Radio frequency.
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Time slot.
Correct Answer
A. 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. By assigning different frequencies to each signal, they can be separated and then combined again at the receiving end. This allows for efficient and high-capacity transmission of multiple signals over a single fiber.Rate this question:
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- 41.
Telecommunications service orders are issued by the
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Department of Defense (DOD).
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Users’ technical control facility.
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National Communications System (NCS).
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Defense Information Systems Agency (DISA).
Correct Answer
A. Defense Information Systems Agency (DISA).Explanation
The correct answer is Defense Information Systems Agency (DISA). DISA is responsible for issuing telecommunications service orders. The Department of Defense (DOD) is a broader organization that oversees defense operations, but DISA specifically handles the telecommunications services for the DOD. The users' technical control facility and the National Communications System (NCS) may be involved in the process, but DISA is the agency that issues the service orders.Rate this question:
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- 42.
What is the seconds delay of a real-time satellite?
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0.1.
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0.6.
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1.0.
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6.0.
Correct Answer
A. 0.6.Explanation
The correct answer is 0.6. This suggests that the real-time satellite has a delay of 0.6 seconds. This delay refers to the time it takes for the satellite to transmit data or signals from one point to another. It indicates that there is a slight delay in the communication process due to the distance the signals have to travel.Rate this question:
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- 43.
Which feedhorns are located in the AN/GSC–52 earth terminal feed assembly?
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Single tracking and communication feedhorn.
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One tracking feedhorn and one communications feedhorn.
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One tracking feedhorn and four communications feedhorns.
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Four tracking feedhorns and one communication feedhorn.
Correct Answer
A. Four tracking feedhorns and one communication feedhorn.Explanation
The correct answer is four tracking feedhorns and one communication feedhorn. This means that in the AN/GSC-52 earth terminal feed assembly, there are four feedhorns dedicated to tracking and one feedhorn dedicated to communication.Rate this question:
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- 44.
Which office resolves 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)?
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Joint Staff.
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Combatant commander (COCOM).
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Defense Information Systems Agency Operations Control Complex (DOCC).
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Consolidated Space Operations Center (CSOC).
Correct Answer
A. Joint Staff.Explanation
The Joint Staff is the correct answer because it is the office that resolves 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). The Joint Staff is responsible for coordinating and integrating military activities across the different branches of the armed forces, and resolving conflicts in satellite resource allocation falls under their purview.Rate this question:
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- 45.
Which term is defined as those measures taken to ensure the continued use of the frequency spectrum by Department of Defense (DOD) and friendly forces?
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Electronic attack (EA).
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Electronic warfare (EW).
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Electronic support (ES).
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Counter-counter measures (CCM).
Correct Answer
A. Counter-counter measures (CCM).Explanation
Counter-counter measures (CCM) refers to the measures taken to ensure the continued use of the frequency spectrum by the Department of Defense (DOD) and friendly forces. These measures are aimed at countering any electronic attacks (EA) or electronic warfare (EW) that may be directed towards disrupting or denying the use of the frequency spectrum. CCM is a proactive approach that involves implementing defensive strategies and techniques to neutralize or mitigate the effects of electronic attacks, thereby safeguarding the availability and integrity of the frequency spectrum for DOD and friendly forces.Rate this question:
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- 46.
What happens in the event of a downconverter failure in the AN/GSC–52 earth terminal?
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The downconverter switch assembly (under terminal server A control) automatically places a spare online.
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The downconverter alarm monitor (under terminal server A control) automatically places a spare online.
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The downconverter controller (under terminal server A control) automatically places a spare online.
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The spare downconverter must be configured and placed online manually.
Correct Answer
A. The downconverter switch assembly (under terminal server A control) automatically places a spare online.Explanation
In the event of a downconverter failure in the AN/GSC-52 earth terminal, the downconverter switch assembly, which is controlled by terminal server A, will automatically place a spare downconverter online. This ensures that the terminal continues to function properly without any interruption in signal conversion.Rate this question:
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- 47.
Which Defense Meteorological Satellite Program (DMSP) elements receive only real-time satellite imagery when the satellite is in view?
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Strategic.
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Tactical.
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Air Force Weather Agency.
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Automated remote tracking stations.
Correct Answer
A. Tactical.Explanation
The Defense Meteorological Satellite Program (DMSP) elements that receive only real-time satellite imagery when the satellite is in view are the Tactical elements. This means that these elements are able to access and utilize the satellite imagery in real-time for their specific operational needs and decision-making processes. The Strategic elements, Air Force Weather Agency, and Automated remote tracking stations may also receive real-time satellite imagery, but they are not limited to it and may have access to other types of data and information as well.Rate this question:
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- 48.
For global positioning system (GPS) receivers, how much of a difference in target coordinates is there if the Datum mismatches?
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7.5 meters.
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75 meters.
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750 meters.
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7,500 meters.
Correct Answer
A. 750 meters.Explanation
If the Datum mismatches in GPS receivers, there will be a difference of 750 meters in target coordinates. This means that the location obtained from the GPS receiver will be off by 750 meters from the actual target location.Rate this question:
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- 49.
Modifications on the Defense Satellite Communications System phase III (DSCS III) satellite include
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Larger solar panels.
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Smaller solar panels.
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Multibeam array antenna.
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Single-channel transponder (SCT) downlink.
Correct Answer
A. Single-channel transponder (SCT) downlink.Explanation
The modifications on the Defense Satellite Communications System phase III (DSCS III) satellite include a single-channel transponder (SCT) downlink. This means that the satellite now has the capability to transmit and receive signals through a single-channel transponder, allowing for improved communication and data transfer. This modification is likely to enhance the overall performance and efficiency of the satellite's communication system.Rate this question:
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Mar 20, 2023Quiz Edited by
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Jun 16, 2013Quiz Created by
Mmikhaylevskiy
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