The Langley CST - 3D151 VOL 2 quiz assesses knowledge in telecommunications and acoustics within a military context, focusing on sound frequencies, signal processing, and communication systems like DMS-100 used at Air Force bases.
200 to 3,000
20 to 20,000
20 to 200,000
Up to 2,600
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Amplitude
Frequency
Tone
Pitch
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Power variations
Amplitude variations
Black body raditation
Molecular breakdown
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10,000
30,000
100,000
300,000
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1
3
30
512
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Call control
Supervisory
Signaling
User (voice or data)
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Camera
Coder/decoder (CODEC)
Network termination 1
Central processing unit (CPU)
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One, they share the same channel
Two, one for each direction
Three, two to transmit/receive and one to signal
Four, two to transmit and two to receive
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Gateway
Gatekeeper
Terminal adapter
Multipoint control unit (MCU)
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High
Medium
Very high
Ultra high
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Attenuation
Impedance
Resistance
Distortion
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Should be circular and the receiving antenna horizontal
Should be vertical and receiving antenna horizontal
Should be horizontal and receiving antenna vertical
And receiving antenna should have the same polarization
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Whip
Dipole
Isotropic
Parabolic
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Decibels (dB) gain
DB plus
Over voltage
Over watts
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Curvature of the earth
Buildings in the area
Topographic features
Physical limitation of the frequency attenuation
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Ice
Fog
Hail
Snow
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Percentage of modulation
Signal-to-noise
Selectivity
Distortion
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Pager
Land mobile radio (LMR)
Family radio service (FRS)
Personal digital assistant (PDA)
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300 to 1,600
300 to 2,600
300 to 3,400
300 to 3,800
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DMS-100 and Meridian System Logic (MSL)-100
DMS-100/200 and MSL-100
DMS-100/200 and DMS-200
DMS-200 and MSL-100
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Digital signal (DS)-1
DS-30A
DS-32
T1A
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Bay
Card
Shelf
Frame
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Bay
Card
Shelf
Frame
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A device controller
The network message controller
A peripheral module's (PM) peripheral processor (PP)
The computing module's (CM) central processing unit (CPU)
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30
32
34
36
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6
8
16
24
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Discrete amplitudes are assigned to the sampling pulses
A binary code number is assigned to the sample
The quantizer limits the amplitude of the pulses
The analog signal is band-limited
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Encoding
Sampling
Quantization
Band limiting
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Bearer rate interface and data rate interface
Basic rate interface and primary rate interface
Basic rate interface and secondary rate interface
Primary rate interface and secondary rate interface
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Physical characteristics between the Integrated Services Digital Network (ISDN) interface and the network
Logical links between customer equipment and the circuit switch
Final preparation of the signal before it is routed
Actual routing of the signal
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Detect noise
Insert tones
Verify a dial tone
Insert signal delay
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24
30
32
64
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Less than 50
Less than 150
Greater than 50
Greater than 150
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Quality of service (QoS)
Remote control protocol (RCP)
Forward error correction (FEC)
Phase-locked loop (PLL)
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Limiting
Amplifying
Heterodyning
Discriminating
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Limiter
Detector
Amplifier
Discriminator
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Sensitivity
Selectivity
Fade margin
Thermal noise
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Electric
Magnetic
Induction
Radiation
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Time division multiple access (TDMA)
Personal communications services (PCS)
Frequency division multiple access (FDMA)
Global system for mobile communications (GSM)
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Square
Octagon
Hexagon
Pentagon
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Portable
Mobile
Repeater
Base station
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Talkgroups
Channels
Packets
Nets
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Geographical
Continental
Regional
Ocean
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Make sure dangerous voltages are not present on the line
Prevent interruptions to critical circuits
Avoid activating alarm circuits
Verify the circuit is not in use
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CAM provides a secure data network to local subscribers
BAM provides a secure data network to local subscribers
CAM has a fixed capability
BAM has a fixed capability
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Quarter
Half
One
Two
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System load (SL)-1
DMS-100
DMS-200
Meridian System Logic (MSL)-100
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Control node (CN)
Peripheral module (PM)
Message controller (MC)
Central control
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