Air Force Network Integration Apprentice Exam 3c251 Vol 4

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  • 1/100 Questions

    What led to the development of very high frequency (VHF) and ultrahigh frequency (UHF) radio systems during the World War II?

    • The longer distances involved in communications with forces in Europe
    • The need for more reliable high-capacity communications
    • The development of line of sight (LOS) communications
    • The need for more resistance to nuclear blast
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About This Quiz

The Air Force Network Integration Apprentice Exam 3C251 Vol 4 assesses knowledge in VHF and UHF radio systems, types of radio waves, wave behaviors, ionospheric conditions, and satellite systems, essential for Air Force communications operations.

Air Force Network Integration Apprentice Exam 3c251 Vol 4 - Quiz

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  • 2. 

    The two primary types of radio waves are:

    • Direct and surface

    • Sky and surface

    • Ground and sky

    • Direct and sky

    Correct Answer
    A. Ground and sky
    Explanation
    Radio waves can be classified into two primary types based on their propagation characteristics. Ground waves are radio waves that travel close to the Earth's surface and follow the curvature of the Earth. These waves are used for long-distance communication as they can travel over large distances by bending around obstacles. Sky waves, on the other hand, are radio waves that are reflected off the ionosphere, a layer of charged particles in the Earth's upper atmosphere. These waves can be used for long-distance communication as they can be reflected back to the Earth's surface. Therefore, the correct answer is ground and sky.

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  • 3. 

    Which organization is responsible for the design, acquisition, and single systems management of the defense switched network

    • Defense logistics agency

    • Communications squadron

    • Air force communications agency

    • Defense information systems agency (DISA)

    Correct Answer
    A. Defense information systems agency (DISA)
    Explanation
    The defense information systems agency (DISA) is responsible for the design, acquisition, and single systems management of the defense switched network. DISA is an agency within the Department of Defense that provides information technology and communications support to the military. They are responsible for ensuring the secure and efficient operation of the defense network infrastructure, including the defense switched network.

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  • 4. 

    Above what frequency does the propagation loss because of oxygen and water absorption become very serious in satellite communications?

    • 10 gigahertz (GHz)

    • 8 GHz

    • 6 GHz

    • 4 GHz

    Correct Answer
    A. 10 gigahertz (GHz)
    Explanation
    Oxygen and water absorption causes propagation loss in satellite communications due to their interaction with electromagnetic waves. As the frequency of the waves increases, the absorption by oxygen and water molecules also increases. At frequencies above 10 gigahertz (GHz), the absorption becomes very serious, resulting in significant signal degradation and loss.

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  • 5. 

    Two system control problems with time division multiple access are in the area of network timing and

    • Power

    • Frequency

    • Synchronization

    • Transponder complexity

    Correct Answer
    A. Synchronization
    Explanation
    Time division multiple access (TDMA) is a communication technique that allows multiple users to share the same frequency channel by dividing it into different time slots. One of the control problems with TDMA is network timing, which refers to the synchronization of the different devices in the network to ensure accurate transmission and reception of data. Another control problem is synchronization with power frequency, which involves aligning the timing of the TDMA system with the power grid frequency to prevent interference and maintain reliable communication. Therefore, synchronization is a crucial aspect in TDMA systems to ensure efficient and accurate data transmission.

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  • 6. 

    Which encryption devices makes end-to-end encryption available to any user of the defense switched network

    • KG-84

    • KG-94

    • KIV-7

    • Secure telephone unit- III (STU-III)

    Correct Answer
    A. Secure telephone unit- III (STU-III)
    Explanation
    The correct answer is secure telephone unit- III (STU-III). STU-III is an encryption device that enables end-to-end encryption for any user of the defense switched network. It provides secure communication by encrypting voice and data transmissions, ensuring that only authorized users can access the information. STU-III is widely used in military and government organizations to protect sensitive and classified information from unauthorized access or interception.

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  • 7. 

    What type of frequency is the higher frequency that returns to earth when it is transmitted vertically under given ionospheric conditions?

    • Frequency of optimum traffic

    • Maximum usable frequency

    • Most usable frequency

    • Critical frequency

    Correct Answer
    A. Critical frequency
    Explanation
    The critical frequency is the highest frequency that can be transmitted vertically and return to Earth under specific ionospheric conditions. It represents the point at which the ionosphere becomes too dense to allow the radio waves to pass through and be reflected back to Earth. This frequency is important for determining the maximum usable frequency for communication purposes.

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  • 8. 

    At a minimum, a typical link involves

    • An active satellite and one earth terminal

    • An active satellite and two earth terminals

    • Two active satellites and one earth terminal

    • Two active satellites ans two earth terminals

    Correct Answer
    A. An active satellite and two earth terminals
    Explanation
    A typical link involves an active satellite and two earth terminals. This is because the satellite acts as a relay station between the two earth terminals, allowing communication between them. One earth terminal sends the signal to the satellite, which then transmits it to the other earth terminal. Having two earth terminals ensures that there is a two-way communication link, allowing for data transmission in both directions.

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  • 9. 

    The Red switch program provides which subscriber(s) a Red telephone?

    • Operational Support only

    • Command and Control (C2) only

    • Logistics and operational support

    • Logistics and C2

    Correct Answer
    A. Command and Control (C2) only
    Explanation
    The Red switch program provides a Red telephone to the Command and Control (C2) only. This means that only subscribers involved in command and control activities can access and use the Red telephone provided by the Red switch program. It excludes subscribers who are involved in operational support, logistics, or both.

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  • 10. 

    What type of device is used to provide the cryptographic engine for the secure terminal equipment (STE) terminal?

    • Crypto key card

    • FORTEZZA key

    • FORTEZZA card

    • Crypto ignition key

    Correct Answer
    A. FORTEZZA card
    Explanation
    A FORTEZZA card is used to provide the cryptographic engine for the secure terminal equipment (STE) terminal. The FORTEZZA card is a type of smart card that contains encryption algorithms and keys necessary for secure communication. It is specifically designed to meet the requirements of the National Security Agency (NSA) for secure communications.

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  • 11. 

    What is a major disadvantages of a geostationary satellite?

    • It can't amplify signals

    • It orbits the earth in a figure eight pattern

    • The transmitted frequency is below 10-gigahertz (GHz)

    • The two-way propagation delay is about 0.6 seconds

    Correct Answer
    A. The two-way propagation delay is about 0.6 seconds
    Explanation
    A major disadvantage of a geostationary satellite is the two-way propagation delay of about 0.6 seconds. This delay occurs due to the large distance that signals have to travel between the satellite and the ground station. It can cause noticeable delays in real-time communication, such as telephone conversations or video calls, making them less efficient and sometimes even impractical.

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  • 12. 

    What satellite device receives, amplifies, and retransmits signals from earth terminals

    • Station keeper

    • Satellite amplifier

    • Satellite transponder

    • Regenerative repeater

    Correct Answer
    A. Satellite transponder
    Explanation
    A satellite transponder is a device that receives signals from earth terminals, amplifies them, and then retransmits them back to earth. It acts as a communication relay between the earth terminals and the satellite. This allows for the signals to be transmitted over long distances and ensures that they maintain their strength and quality during the transmission process.

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  • 13. 

    What type of defense switched network (DSN) precedence call cannot be preempted

    • Flash

    • Priority

    • Intermediate

    • Flash override

    Correct Answer
    A. Flash override
    Explanation
    A flash override call in a switched network (DSN) precedence cannot be preempted. This means that when a flash override call is made, it will take precedence over any other type of call in the network, regardless of their priority or importance. This ensures that critical and urgent messages are immediately relayed without any delay or interruption.

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  • 14. 

    Who must make the first entry and sign the DD form 1753?

    • The coordinator

    • The shift supervisory

    • The NCOIC of technical control

    • The senior ranking person on duty

    Correct Answer
    A. The shift supervisory
    Explanation
    The shift supervisory is responsible for making the first entry and signing the DD form 1753. This indicates that they are in charge of documenting and recording any relevant information related to the form. As the shift supervisor, they have the authority and accountability to ensure that the necessary documentation is completed accurately and in a timely manner.

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  • 15. 

    The reduction in amplitude of a radio signal as it travels away from the source through a propagation medium that's free of obstructing, scattering, or reflecting effects is called

    • Faraday effect

    • Doppler effect

    • Free space attenuation

    • None of the above

    Correct Answer
    A. Free space attenuation
    Explanation
    Free space attenuation refers to the reduction in amplitude of a radio signal as it travels through a propagation medium without any obstructions, scattering, or reflecting effects. This means that the signal weakens as it moves away from the source in an unobstructed environment. The Faraday effect is the rotation of the plane of polarization of a light wave as it passes through a magnetic field, while the Doppler effect is the change in frequency of a wave due to the relative motion between the source and the observer. Therefore, neither of these options accurately describes the given scenario.

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  • 16. 

    Which organization provides theater-wide administration and network management in the Defense Switched Network (DSN)?

    • Global network Operations and Security Control Center (GNOSC)

    • Regional network Operations and Security Control Center (RNOSC)

    • Subregional Control Facility (SRCF)

    • Local Control Center

    Correct Answer
    A. Regional network Operations and Security Control Center (RNOSC)
    Explanation
    The Regional Network Operations and Security Control Center (RNOSC) provides theater-wide administration and network management in the Defense Switched Network (DSN). The RNOSC is responsible for overseeing and maintaining the DSN infrastructure within a specific region, ensuring its availability and security. This includes managing network resources, troubleshooting issues, and implementing security measures to protect the network from cyber threats. The GNOSC, on the other hand, is responsible for global network operations and security control, overseeing multiple RNOSCs and providing higher-level coordination and support. The SRCF and Local Control Center are not responsible for theater-wide administration and network management in the DSN.

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  • 17. 

    What is the major type(s) of terminal used in the Defense Red Switched Network?

    • KG-84 only

    • Secure telephone unit III (STU-III) only

    • KG-84 and secure terminal equipment (STE)

    • STU-III and STE

    Correct Answer
    A. STU-III and STE
    Explanation
    The major type(s) of terminal used in the Defense Red Switched Network are the Secure Telephone Unit III (STU-III) and Secure Terminal Equipment (STE).

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  • 18. 

    Who does not have the authority to designate special interest items?

    • Headquarters Defense Information Systems Agency (HQ DISA)

    • Site Commanders

    • Global Network Operations and Security Center (GNOSC)

    • Regional Network Operations and Security Center ( RNOSC)

    Correct Answer
    A. Site Commanders
    Explanation
    Site Commanders do not have the authority to designate special interest items.

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  • 19. 

    The Doppler effect, inherent to satellite communications, is caused by

    • Transmit frequency drift

    • Transmit frequency drift off the phase-lock ground receivers

    • The satellite's motion in space relative to ground stations

    • Rotation of the polarization of radio waves

    Correct Answer
    A. The satellite's motion in space relative to ground stations
    Explanation
    The Doppler effect refers to the change in frequency of a wave as a result of the relative motion between the source of the wave and the observer. In the context of satellite communications, the satellite's motion in space relative to the ground stations causes the Doppler effect. As the satellite moves towards or away from the ground stations, the frequency of the transmitted signal appears to shift higher or lower, respectively, to the observer on the ground. This phenomenon needs to be taken into account in order to accurately receive and interpret satellite signals.

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  • 20. 

    What is the major component(s) of the theater deployable communications (TDC) system that provides mobile units with flexible, lightweight, secure, modular, and integrated deployable communications?

    • Troposcatter-satellite support radio (TSSR) and integrated communications access package (ICAP)

    • Lightweight multiband satellite terminal (LMST) and (ICAP)

    • TSSR only

    • LMST only

    Correct Answer
    A. Lightweight multiband satellite terminal (LMST) and (ICAP)
    Explanation
    The major components of the theater deployable communications (TDC) system that provide mobile units with flexible, lightweight, secure, modular, and integrated deployable communications are the Lightweight Multiband Satellite Terminal (LMST) and the Integrated Communications Access Package (ICAP). These components are essential for enabling mobile units to have efficient and reliable communication capabilities in theater deployments.

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  • 21. 

    What is the long-haul transmission component of theater deployable communications (TDC)?

    • Ground mobile forces terminal

    • Lightweight multiband satellite terminal (LMST)

    • An/TRC-170, Digital Troposcatter radio Terminal Set

    • An/TSQ-111, Communications nodal Control Element

    Correct Answer
    A. Lightweight multiband satellite terminal (LMST)
    Explanation
    The long-haul transmission component of theater deployable communications (TDC) is the Lightweight multiband satellite terminal (LMST). This terminal is designed to provide reliable and secure satellite communications over long distances. It is lightweight and can be easily transported and set up in theater environments. The LMST supports multiple frequency bands, allowing it to operate in various satellite networks and adapt to different mission requirements. It is an essential component for establishing and maintaining long-range communication capabilities in theater deployments.

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  • 22. 

    What support does the multi-channel standard tactical entry point provide to deploying forces?

    • Communications capability to connect to commercial networks

    • Communications capability to connect to the Defense Information Systems Network (DISN)

    • Transmission links between local area networks (LAN)

    • Transmission links to other nodes

    Correct Answer
    A. Communications capability to connect to the Defense Information Systems Network (DISN)
    Explanation
    The multi-channel standard tactical entry point provides communications capability to connect to the Defense Information Systems Network (DISN). This means that deploying forces can utilize the DISN for their communication needs, allowing them to securely transmit data, voice, and video information. This connectivity to the DISN ensures that the forces can effectively communicate and coordinate with other military units and command centers, enhancing their situational awareness and operational capabilities.

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  • 23. 

    What condition causes the downward bending of a radio wave as it grazes the top of an obstruction such as a mountain peak?

    • Reflection

    • Refraction

    • Diffraction

    • Diffusion

    Correct Answer
    A. Diffraction
    Explanation
    Diffraction is the correct answer because it refers to the bending or spreading out of a wave as it encounters an obstacle or passes through a narrow opening. In the case of a radio wave grazing the top of an obstruction, such as a mountain peak, the wave will experience diffraction, causing it to bend downward. This phenomenon occurs because the radio wave interacts with the edges of the obstruction and spreads out, resulting in a change in its direction.

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  • 24. 

    During periods of maximum sunspot activity, what is the density level and altitude effect of the F layer?

    • Less dense and at a lower altitude

    • More dense and at a lower altitude

    • Less dense and at a higher altitude

    • More dense and at a higher altitude

    Correct Answer
    A. More dense and at a higher altitude
    Explanation
    During periods of maximum sunspot activity, the F layer of the ionosphere becomes more dense and moves to a higher altitude. This is because the increased solar radiation during sunspot activity causes more ionization in the F layer, leading to an increase in the number of free electrons. These free electrons then recombine with ions in the F layer, resulting in a denser layer. Additionally, the increased ionization also causes the F layer to move to higher altitudes due to the increased electron density and interaction with the Earth's magnetic field.

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  • 25. 

    Why should high-priority users not be terminated on a remote switching unit (RSU)?

    • A secure telephone unit -III (STU-III) cannot make calls through a RSU

    • Precedence calling is not available with RSU

    • RSU can become saturated and deny all service

    • RSU can become isolated from the parent switch

    Correct Answer
    A. RSU can become isolated from the parent switch
    Explanation
    High-priority users should not be terminated on a remote switching unit (RSU) because the RSU can become isolated from the parent switch. This means that if the RSU loses connectivity with the parent switch, the high-priority users will not have access to the necessary resources and services provided by the parent switch. Therefore, it is important to ensure that high-priority users are connected to a reliable and stable network to maintain uninterrupted communication and access to essential services.

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  • 26. 

    What type of multiple-access service used in satellite communications provides each earth terminal exclusive use of the satellite transponder for a specified time interval

    • Spread spectrum multiple access (SSMA)

    • Frequency division multiple access (FDMA)

    • Demand assignment multiple access (DAMA)

    • Time division multiple access (TDMA)

    Correct Answer
    A. Time division multiple access (TDMA)
    Explanation
    Time Division Multiple Access (TDMA) is a type of multiple-access service used in satellite communications that provides each earth terminal exclusive use of the satellite transponder for a specified time interval. In TDMA, the available bandwidth is divided into time slots, and each earth terminal is allocated a specific time slot to transmit its data. This allows multiple terminals to share the same frequency channel by taking turns transmitting their data during their allocated time slots. By dividing the time, TDMA ensures that each earth terminal has exclusive access to the satellite transponder during its assigned time interval, ensuring efficient and reliable communication.

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  • 27. 

    In addition to fiber-optic and copper cables, what type of system is used to interconnect integrated communications access package access nodes on a deployed base within the same theater area?

    • Microwave and laser

    • Microwave only

    • Satellite and laser

    • Satellite only

    Correct Answer
    A. Microwave and laser
    Explanation
    Microwave and laser systems are used to interconnect integrated communications access package access nodes on a deployed base within the same theater area. This means that in addition to fiber-optic and copper cables, microwave and laser technology is utilized for communication purposes. These systems provide a wireless connection that allows for the transmission of data and information between access nodes, ensuring efficient and reliable communication within the deployed base.

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  • 28. 

    Maintaining optimum performance of a satellite's transponder is a function of

    • Satellite control

    • Station keeping

    • Satellite ground track

    • Communications control

    Correct Answer
    A. Satellite control
    Explanation
    Maintaining optimum performance of a satellite's transponder is achieved through satellite control. This involves monitoring and controlling various aspects of the satellite's operations, such as power levels, frequency management, and signal quality. Satellite control ensures that the transponder operates efficiently and effectively, allowing for reliable communication and data transmission. Station keeping, satellite ground track, and communications control are important factors in satellite operations, but they are not specifically related to the performance of the transponder.

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  • 29. 

    What satellite access system lets several users occupy the same frequency spectrum in the transponder simultaneously

    • Frequency division multiple access (FDMA)

    • Time division multiple access (TDMA)

    • Spread spectrum multiple access (SSMA)

    • Band spreading multiple access

    Correct Answer
    A. Spread spectrum multiple access (SSMA)
    Explanation
    Spread spectrum multiple access (SSMA) is a satellite access system that allows several users to occupy the same frequency spectrum in the transponder simultaneously. SSMA uses a technique called spread spectrum, which spreads the signal across a wide frequency band. This allows multiple users to share the same frequency band without interfering with each other. SSMA is known for its ability to provide secure and reliable communication, as well as its resistance to jamming and interference.

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  • 30. 

    What type of precedence is assigned to defense switched network (DSN) calls pertaining to situations that gravely affect the security of national allied forces

    • Flash

    • Priority

    • Intermediate

    • Flash override

    Correct Answer
    A. Intermediate
    Explanation
    The correct answer is "intermediate." In a defense switched network (DSN), calls pertaining to situations that gravely affect the security of national allied forces are given an intermediate precedence. This means that these calls are of significant importance but not as urgent as flash or flash override calls. Intermediate precedence ensures that these calls are prioritized and given attention, but they may not be as time-sensitive as other types of calls.

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  • 31. 

    What integrated communications access package module contains circuit switches that implement private branch exchange (PBX)?

    • Basic access package (BAM)

    • Secure voice module

    • Voice configuration kit

    • Digital subscriber voice terminal (DSVT)

    Correct Answer
    A. Basic access package (BAM)
    Explanation
    The basic access package (BAM) is the integrated communications access package module that contains circuit switches that implement private branch exchange (PBX). This means that BAM allows for the routing of both voice and data communications within an organization, providing telephone services and internal communication capabilities. It is a comprehensive solution that includes the necessary hardware and software components to support PBX functionality. The other options, such as the secure voice module, voice configuration kit, and digital subscriber voice terminal (DSVT), do not specifically mention circuit switches or PBX implementation.

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  • 32. 

    How long do you retain a circuit data record (DD form 1441) after a circuit is deactivated?

    • One year

    • One month

    • Six months

    • Indefinitely

    Correct Answer
    A. Six months
    Explanation
    After a circuit is deactivated, the circuit data record (DD form 1441) is retained for a period of six months. This is done to ensure that the necessary information related to the circuit is available for any future reference or auditing purposes. Retaining the record for six months allows sufficient time to review and analyze the data before it can be securely disposed of.

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  • 33. 

    How is survivability provided in the defense switched network

    • End offices are multiple-homed

    • End offices do not interoperate with allied networks

    • The DSN offers precedence access thresholding (PAT)

    • The DSN offers single mulitlevel precedence and preemption (MLPP)

    Correct Answer
    A. End offices are multiple-homed
    Explanation
    Survivability in the defense switched network is provided by having end offices that are multiple-homed. This means that each end office is connected to multiple network paths or links, ensuring redundancy and fault tolerance. If one link or path fails, the end office can still maintain connectivity and communication through the alternate paths. This multiple-homing feature increases the network's resilience and ability to withstand disruptions or attacks, thereby enhancing survivability.

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  • 34. 

    When a called a defense switched network (DSN) subscriber answers, what action is taken by the switch's central control (CC) module?

    • The line module reports a subscriber origination to the CC

    • The trunk module reports a subscriber origination to the CC

    • A message is sent to the terminating peripheral processor to send ringing tone

    • A message is sent to the originating peripheral processor to remove ringing tone

    Correct Answer
    A. A message is sent to the originating peripheral processor to remove ringing tone
    Explanation
    The correct answer is "A message is sent to the originating peripheral processor to remove ringing tone." When a called DSN subscriber answers the call, the switch's central control (CC) module sends a message to the originating peripheral processor to remove the ringing tone. This indicates that the call has been successfully answered and the ringing tone needs to be stopped.

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  • 35. 

    The Non-Secure Internet Protocol Router Network (NIPRNET) is

    • Operated and managed as a base communications asset

    • Considered on of the primary components of the Defense Information Systems Network (DISN)

    • Interconnected via the Defense Information Systems Agency Asynchronous Transfer Mode (DATM) network

    • Partially protected by encryption devices

    Correct Answer
    A. Partially protected by encryption devices
    Explanation
    The NIPRNET is partially protected by encryption devices. This means that while some measures are in place to secure the network, it is not fully encrypted. Encryption is a method of encoding data to make it unreadable to unauthorized users, and it provides an additional layer of security. However, since the NIPRNET is only partially protected by encryption devices, there may still be some vulnerabilities or risks associated with the network.

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  • 36. 

    Which is an internet protocol (IP) encryption device that can be directly connected to Red local area networks (LAN)?

    • KG-84

    • KG-194

    • KIV-7

    • Network Encryption System (NES)

    Correct Answer
    A. Network Encryption System (NES)
    Explanation
    The Network Encryption System (NES) is an internet protocol (IP) encryption device that can be directly connected to Red local area networks (LAN). It is designed to provide secure communication and protect sensitive information transmitted over the network. The other options, KG-84, KG-194, and KIV-7, are encryption devices, but they may not be specifically designed for direct connection to LANs or for IP encryption.

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  • 37. 

    What is the maximum number of personnel a medium size integrated communications access package (ICAP) node can support?

    • 50 to 100

    • 100 to 150

    • 150 to 200

    • 200 to 250

    Correct Answer
    A. 150 to 200
    Explanation
    A medium size integrated communications access package (ICAP) node can support a maximum of 150 to 200 personnel. This means that the node is designed to accommodate a workforce within this range. It is important to have this limit in order to ensure efficient and effective communication and access capabilities within the node. Having too few personnel may result in a lack of resources and manpower, while having too many personnel may lead to overcrowding and decreased productivity. Therefore, the optimal range for the maximum number of personnel in a medium size ICAP node is between 150 and 200.

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  • 38. 

    What type of document identifies test equipment that has not been updated and has exceeded its calibration date, is currently in maintenance, and is due calibration within the next two months?

    • Facility/link data

    • Customer authorization/custody receipt listing (CA/CRL)

    • Test, measurement, and diagnostic equipment (TMDE) listings

    • Communications-Computer Systems Installation Records (CSIR)

    Correct Answer
    A. Test, measurement, and diagnostic equipment (TMDE) listings
    Explanation
    The correct answer is "Test, measurement, and diagnostic equipment (TMDE) listings." This type of document identifies test equipment that has not been updated and has exceeded its calibration date, is currently in maintenance, and is due calibration within the next two months. TMDE listings provide a comprehensive record of all the test, measurement, and diagnostic equipment in an organization, including their calibration status and maintenance schedules. By referring to these listings, organizations can ensure that their equipment is properly calibrated and maintained to ensure accurate and reliable testing and measurements.

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  • 39. 

    What is the maximum asynchronous data rate for the Defense Red Switch Network (DRSN)?

    • 9.6 Kbps

    • 14.4 Kbps

    • 19.2 Kbps

    • 28.8 Kbps

    Correct Answer
    A. 19.2 Kbps
    Explanation
    The maximum asynchronous data rate for the Defense Red Switch Network (DRSN) is 19.2 Kbps.

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  • 40. 

    What's the difference between the basic access module (BAM) and the configuration access module (CAM)?

    • The CAM provides a secure data network to local subscribers

    • The BAM provides a secure data network to local subscribers

    • The CAM has a fixed capability

    • The BAM has a fixed capability

    Correct Answer
    A. The BAM has a fixed capability
  • 41. 

    You receive a telecommunications service order (TSO) at your systems control to move a circuit to another channel. What DD Form must you fill out and put in the circuit history folder along with the TSO?

    • 1441

    • 1443

    • 1697

    • 1698

    Correct Answer
    A. 1697
    Explanation
    To move a circuit to another channel, you must fill out and put DD Form 1697 in the circuit history folder along with the TSO.

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  • 42. 

    What report must be sent if the circuit does not meet all required parameters and the Telecommunications Service Order (TSO) issuing authority advises that the circuit is accepted for service?

    • In-effect

    • Exception

    • Acceptance

    • Delayed service

    Correct Answer
    A. Exception
    Explanation
    If the circuit does not meet all required parameters but is still accepted for service by the TSO issuing authority, a report called "Exception" must be sent. This report is used to document and highlight any deviations or exceptions from the required parameters. It serves as a record of the circuit's non-compliance and allows for further investigation or action to be taken if necessary.

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  • 43. 

    Which satellite communications subsytem consists of a satellite antenna array and a transportation

    • Earth

    • Space

    • Orbital

    • Control

    Correct Answer
    A. Space
    Explanation
    The correct answer is "space." In satellite communications, the space subsystem refers to the satellite itself, which includes the satellite antenna array and the transportation of signals to and from Earth. This subsystem is responsible for transmitting and receiving signals between the satellite and ground stations, enabling communication over long distances.

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  • 44. 

    The circuit data record serves

    • As a wire record and equipment firle for maintenance people

    • As a source document for the data base file in the technical control facility

    • Primarily to assist the systems control facility in troubleshooting and circuit restoration

    • As the primary source document of data in preparing telecommunications service orders (TSO)?

    Correct Answer
    A. Primarily to assist the systems control facility in troubleshooting and circuit restoration
    Explanation
    The circuit data record primarily serves to assist the systems control facility in troubleshooting and circuit restoration. This means that it provides valuable information and documentation that helps the facility identify and fix any issues or problems with the circuits. It acts as a reference guide for the facility staff to understand the circuit layout, connections, and other relevant details, enabling them to effectively troubleshoot and restore the circuit's functionality.

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  • 45. 

    What Integrated Communications Access Package (ICAP) node module provides the ration frequency (RF) line-of-sight (LOS) link function for internodal connectivity?

    • Microwave

    • Crypto

    • P-MUX

    • Laser

    Correct Answer
    A. Microwave
    Explanation
    The correct answer is Microwave. The Microwave module in the Integrated Communications Access Package (ICAP) provides the radio frequency (RF) line-of-sight (LOS) link function for internodal connectivity. Microwave technology uses high-frequency radio waves to transmit data and is commonly used for wireless communication over long distances. It allows for reliable and high-speed communication between nodes in a network.

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  • 46. 

    What lightweight multiband satellite terminal (LMST) capability reduces the limitations of the Defense Satellite Communications System (DSCS)?

    • C-band access only

    • X-band access only

    • C and Ku band access

    • X and Ku band access

    Correct Answer
    A. C and Ku band access
    Explanation
    The lightweight multiband satellite terminal (LMST) capability of having access to both C and Ku bands reduces the limitations of the Defense Satellite Communications System (DSCS). By having access to multiple bands, the LMST can utilize different frequencies and channels, increasing its flexibility and capacity for communication. This allows for improved signal quality, increased bandwidth, and enhanced data transmission capabilities, ultimately overcoming the limitations of relying on a single band for satellite communications.

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  • 47. 

    What must customers do to connect their own telephones and computer workstations to the theater deployable communications (TDC) backbone network?

    • Adhere to various open system standards and interfaces such as Ethernet

    • Adhere to military encryption standards on all connections

    • Provide an Integrated Digital Network Exchange (IDNX)/Promina multiplexer

    • Provide fiber optic cables and connectors

    Correct Answer
    A. Adhere to various open system standards and interfaces such as Ethernet
    Explanation
    To connect their own telephones and computer workstations to the theater deployable communications (TDC) backbone network, customers must adhere to various open system standards and interfaces such as Ethernet. This means that they need to ensure compatibility with the established protocols and technologies used in the network, specifically Ethernet, which is a widely adopted standard for local area networks (LANs). By adhering to these standards, customers can ensure seamless integration and communication with the TDC backbone network.

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  • 48. 

    What is the design architecture of theater deployable communications (TDC)?

    • Local area network (LAN) and hub spoke

    • Metropolitan area network (MAN) and hub spoke

    • LAN and point-to-point

    • MAN and point-to-point

    Correct Answer
    A. Metropolitan area network (MAN) and hub spoke
    Explanation
    The design architecture of theater deployable communications (TDC) is a Metropolitan area network (MAN) and hub spoke. This means that the TDC system is set up to connect multiple local area networks (LANs) within a specific geographical area, with a central hub acting as the main point of communication. The hub spoke design allows for efficient and centralized communication between different LANs, making it suitable for theater deployments where multiple units or locations need to be connected.

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  • 49. 

    How long must an exception report be maintained in the circuit history folder at an intermediate facility?

    • Until an in-effect report is submitted

    • For the entire duration of an active circuit

    • Until a delayed service report can be submitted

    • Until the condition causing the report to be rendered is cleared

    Correct Answer
    A. Until the condition causing the report to be rendered is cleared
    Explanation
    The exception report must be maintained in the circuit history folder at an intermediate facility until the condition causing the report to be rendered is cleared. This means that the report should be kept until the issue or problem that led to the report being generated is resolved or fixed. Once the condition is cleared, the report may no longer be necessary and can be removed from the circuit history folder.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 18, 2010
    Quiz Created by
    Catbwin
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