annex b
Question text According to the planning considerations associated with the employment of high frequency systems, directional antennas are typically more efficient than omnidirectional antennas. A) true B) false C) D)
a
Question text The Harris RT-1694 enables secure data and voice communications by complying with what government defined standard? A) US Government Type 1 B)Two-Factor Authentication C) US Government Type III D) US Government AES 256
a
Question text Which of the following is NOT one of the three factors that determine the type, size, and shape of an antenna? A) Transmission line length B) Operating frequency C)Direction of receiving set D)Power to be radiated
a
A wavelength is expressed in _____________? a) cycles by number b) frequency (hertz) c) distance (meters) d) time (seconds)
c
To avoid electromagnetic interference, what is the best practice for laying out signal and power cables. A) employ the cables in a parallel configuration B) seperate the cables by two feet C) power and wiring cables should be seperated from signal cables D) cross the cables at every opportunity to increase signal flow
c
What is the adequate ground resistance for military electronics?A) less than 1 ohm B) less than 50 ohms C) less than 10 ohms D)less than 100 ohms
c
In order to properly distribute power to your communications systems, you would employ power distribution systems called Mobile Electric Power Distribution Systems. A)true B) false C) D)
false
Question text The two operating modes for MUOS are: Point to Point and Point to Multipoint. A)true B)false C) D)
false
Match the multiple access method with its distinguishing feature. A) multiple users access based on first come first served one way comms B) multiple users access based on division time C)multiple users access based on hopping algorithm D)multiple users access based on divisions of frequency CDMA, half duplex, FDMA, TDMA
half duplex, TDMA, CDMA, FDMA
Question text BN HQ is trying to contact A Company on BN TAC 1, but they cannot raise them. B Company is able to talk to both the BN HQ & A Company; Hearing the BN's attempts to contact A Company, B Company offers to act as a middle man and repeat the BN's traffic to A Company; This scenario describes what type of retransmission? A)multiband B) relay C)automatic D)singars
relay
From the answers below, select TWO good reasons for grounding military equipment (that requires grounding). A) Provide security for the equipment from theft B) Safety C) Proper equipment function D)Secure the equipment from moving
B.C.
What radios are capable of VHF and UHF transmissions? (Pick Three) A) vrc-104 B) mrc-145 C) prc-117 D)vrc103 E) prc-150
B.C.D
All radio capabilities can be divided into two categories; wideband and narrowband. A radio capability is considered narrowband if its information carrying capacity is less than A)128 bps, or 128 bits per second B)56 kbps, or 56,000 bits per second C)32 Mbps, or 32,000,000 bits per second D)64 kbps, or 64,000 bits per second
D
A short circuit is typically both accidental and dangerous. What is a short circuit? A)A path of low resistance which typically generates an abnormally high amount of current. B)A path of high resistance which typically generates an abnormally low amount of current. C)A path of low resistance which typically generates an abnormally low amount of current. D)
A
A standing wave is A)generated from the sum of two waves of the same frequency travelling on a line in opposite directions B) a transmission line C) a characteristic impedance D)an excitation of a sytem at a specific freqeuncy
A
An irregular supercession is an unplanned supercession, usually as the result of a compromise. A) true B) false C) D)
A
Question text The Harris RT-1694 is capable of transmitting and receiving from 1.6 to 60 Megahertz. A) true B)false C) D)
A
Question text Which of the following allows satellite communications users to have full access to an entire satellite channel? A) dedicated SATCOM B) intergrated wavefrom SATCOM C) demand assigned multiple access D)dedicated assigned multiple access satcom
A
Resistance is the opposition to the flow of current and its magnitude is measured in A) Ohms B) Transmission C)amps D)electrons
A
The three (3) frequencies used in frequency selection planning are the maximum usable frequency (MUF), lowest usable frequency (LUF), and optimum working frequency (FOT). A) true B)false C) D)
A
Two reasons why frequencies above 30 MHz are usually limited to line of sight communications are because they are not normally refracted by the atmosphere and their ground wave is minimal. A) true B) false C) D)
A
What are the two most common types of antenna polarization used with military communication systems? A) vertical and horizontal B)vertical and north-south C)the marine corps only uses ellipitcal polarization D) latitude and longitude
A
When two waves are precisely in step with one another, they are said to be IN PHASE, meaning the difference in phase between them is zero. A)true B) false C) D)
A
Within Appendix 4 to the Annex K, communications planners can find the requested frequencies for an operation, as well as the Communications-Electronics Operating Instructions ? A) true B) false C) D)
A
select the corrdct methods of accesing satelite resources A) time division multiplexed access B)freqency demand multiple access C)frequency division multiple access D)time division multiple access
C.D
A [ ] SATCOM channel is the most capable and most desired type of SCR SATCOM, while a [ ] channel is the least capable and least desired type of SCR SATCOM. A) B) C) D)
25 khz dedicated/ 5 khz dama
The RF-7800 remoting device is capable of remoting both Harris Falcon II and Harris Falcon III radio systems. A) true B) false C) D)
A true
The remoting device, RF-5800, is only capable of remoting Harris Falcon II radio systems. A) true B)false C) D)
A true
According to the planning considerations associated with the employment of high frequency systems, directional antennas are typically more efficient than omnidirectional antennas. A) true B) false C) D)
A) true
Question text Ground waves are composed of two (2) separate wave components: the surface wave and the space wave. A) true B) false C) D)
A) true
Question text The RF-7800 remoting device is capable of remoting both Harris Falcon II and Harris Falcon III radio systems. A) true B) false C) D)
A) true
Question text Which of the following is an advantage of using satellite communications (SATCOM)? (Select all that apply) A) atellite links are free from the high attenuation of wire or cable facilities and are capable of spanning long distances. B)Satellite links provide that critical beyond-line-of-sight link necessary for certain missions. C)Satellite links require minimal planning and can be adjusted on-demand. D)Satellite links are unaffected by the propagation variations that interfere with HF radio.
A,B,D
What satellite communications systems have been and/or still are used in the Marine Corps? A)thuraya B) inmarsat C)STE D)omni E) iridium
A,B,E
Within the Marine Air Ground Task Force (MAGTF) there are three general categories of radio nets: operational nets, fires nets, and support nets. Operational nets are established to enable command and control. Select the standard operational nets below: A) Tac net (VHF) B)Command net (UHF SAT COM/HF) C) TAD (UHF/VHF) D)Tac 2 (VHF) E) intel net (UHF-SATCOM/HF/VHF)
A,B,E
Select all of the best practices associated to the employment of Junction Boxes for Remoting A) must use same pair in both j-boxes B) one J box in COC: one on ant hill C) induct j-box into maintenance as soon as one pair is inoperable D) j-boxes can be used to remote harries data traffic E) never maek bad J-box pairs for future use
A.B.D
When planning for power, who would you coordinate with to ensure you have adequate power to support your communications plan? A) utilities officer B)communication electronic maintenace officer C)motor transport chief D) utilities chief
A.D
Select the correct methods of accessing satellite resources. A) time division multiple access B) time division multiplexed access C)frequency division multiple access D) frequencey demand multiple access
A/C
When employing generators in parallel, the power capacity of your equipment can exceed the capacity of one generator if you are employing a 30kW system. A) true B)false C) D)
B)false
Select from the following the correct categories of radio nets A) naval nets B)operational nets C) support nets D)intel nets E) fires nets
B, C,E
What are the modes of operation used by a radio telephone? A)single duplex B)half duplex C) full duplex D)multiplex
B,C
Question text Which of the following is the definition of Communications Security (COMSEC) device? A)A device that intercepts enemy traffic and deciphers it with the help of classified techniques. B)A device that provides traffic security which is the protection (encryption/decryption) of classified or unclassified operational information. C)A device that provides security for transmissions that also provides protection of classified or unclassified information. D)A device that amplify's the signal of a satellite terminal to overcome the effects of jamming.
B
Simplex and half-duplex are the two primary modes of operation used in radiotelephone communications. A) true B) false C) D)
B
define frequency A) A measure of resistance B)The number of complete cycles completed per second by a wave. C)The number of incomplete cycles completed per second by a wave D)A measure of conductance
B
select the item below that is an HF radio system currently used by the Marine Corps. A)as-2258 (RT-1973) B)VRC-104 (RT-1694) C)prc 119A (RT-1523 A) D)MRC-128 (RT-1690)
B
what appendices within the annex k covers the radio network plan? A) appendix 1 B) appendix 5 C) appendix 7 D) there is no radio network plan appendix
B
A Single Channel Radio Connectivity Diagram is a doctrinal product that can be found in the MCRP 3-30B.2. A) true B) false C) D)
B false
Question text Frequency Hopping scans available frequencies in the system to asses the highest quality link to use for transmission. A) true B)false C) D)
B false
Question text Propagation type, distance, coverage, materials, and site are planning factors associated with selecting what? A)3G ALE Plan B)Grounding Method C)HF systems employment D)VHF Antennas
C
You are the S-6A for 7th Marines, and you are conducting an HF exercise with your Marines. They plan to utilize Near Vertical Incident Skywave (NVIS) to establish communications with their distant end located in the Quackenbush Training Area. Which antenna listed below is capable of NVIS propagation? A) inverted T B)oe-254 C)half wave dipole D)10 ft whip
C
Match the Receiver Transmitter (RT) information to the correct vehicle nomenclature: A)RT-1916 B)RT-1949 C)RT-1796 VRC-103, VRC,114,VRC110
VRC-110, vrc-114, vrc-103
Bandwidth is the number of bits per second of information passing through a communications system (aka Data Rate) A)true B)false C) D)
b
Question text A disturbance that moves through a medium is called what? A) cycle B)wave C) amplitude D)electron
b
Question text Frequency Hopping scans available frequencies in the system to asses the highest quality link to use for transmission. A)true B)false C) D)
b
Question text Simplex and half-duplex are the two primary modes of operation used in radiotelephone communications. A) true B) false C) D)
b
What are the three (3) parts of an antenna system? A) Coupling device, amplifier, antenna B) coupling device, feeder, antenna C) transmitter, coupling device, feeder D) transmitter, feeder, antenna
b
Which characteristic from below is NOT one of the reasons why radiotelephone is the most useful method of military communications? A) convenience B) predictability C) ease of operation D) directness
b
Which of the following is true about "Signal to Noise Ratio?" A)A sufficient Signal to Noise Ratio (SNR) is not needed for preferred radio transmissions. Radio frequencies are strong enough to always be received above 'background noise'. B)The best Signal to Noise Ratio (SNR) can be obtained by a receiver in an area free of electromagnetic noise where the transmitter sends sufficiently loud, or high-powered, radio signals. C)ideal Signal to Noise Ratio (SNR) can be obtained by moving the radio to a location closer to sources of electromagnetic noise D)Improved Signal to Noise Ratio (SNR) on a receiver can be obtained by having the transmitter send less electromagnetic noise.
b
All of the following statements are advantages of satellite communications except: A)Not terrain or atmosphere dependent (Ionosphere) B)Higher quality communications (higher fidelity) C)Low Probability of Detection (LPD) , Interception (LPI) or destruction D)Careful Planning Required
d
Question text The Harris RT-1694 enables secure data and voice communications by complying with what government defined standard? A) us government AES 256 B)two factor authentaction C) us government type 3 D) us government type 1
d
The Net Control Station's primary duties are controlling radio traffic and enforcing radio discipline A)true B)false C) D)
true
