Langley CST - 3D151 Vol 2
- 1.The process of condensation occurs when air particles are:
- A.
Pressurized, causing them to move closer together
- B.
Heated rapidly causing them to spread farther apart
- C.
Heated rapidly causing them to move closer together
- D.
Pressurized, causing them to be released to the atmosphere
- 2.In hertz (Hz), what range of sound can the human ear detect?
- A.
200 to 3,000
- B.
20 to 20,000
- C.
20 to 200,000
- D.
Up to 2,600
- 3.The loudness of a sound is closely related to what part of the sine wave?
- A.
Amplitude
- B.
Frequency
- C.
Tone
- D.
Pitch
- 4.Noise may be introduced into speech signals by thermal agitation and:
- A.
Power variations
- B.
Amplitude variations
- C.
Black body raditation
- D.
Molecular breakdown
- 5.In hertz (Hz), what is the actual voice frequency band?
- A.
300 to 1,600
- B.
300 to 2,600
- C.
300 to 3,400
- D.
300 to 3,800
- 6.Which models of end offices in the Digital Multiplex System (DMS) family are commonly used at Air Force bases to provide base telephone services?
- A.
DMS-100 and Meridian System Logic (MSL)-100
- B.
DMS-100/200 and MSL-100
- C.
DMS-100/200 and DMS-200
- D.
DMS-200 and MSL-100
- 7.Which model of Digital Multiplex System (DMS)-100 family switches is installed in compact modular cabinets?
- A.
System load (SL)-1
- B.
DMS-100
- C.
DMS-200
- D.
Meridian System Logic (MSL)-100
- 8.What is the maximum number of ports that a Meridian System Logic (MSL)-100 will support?
- A.
10,000
- B.
30,000
- C.
100,000
- D.
300,000
- 9.Which type link is normally used to interconnect two peripheral modules (PM) in the Digital Multiplex System (DMS)?
- A.
Digital signal (DS)-1
- B.
DS-30A
- C.
DS-32
- D.
T1A
- 10.What major area is connected to the central side (C-side) of a network module (NM) in the Digital Multiplex System (DMS)?
- A.
Control node (CN)
- B.
Peripheral module (PM)
- C.
Message controller (MC)
- D.
Central control
- 11.What is the mounting bracket called on which transmission or swtiching equipment is mounted in a Digital Multiplex System (DMS)?
- A.
Bay
- B.
Card
- C.
Shelf
- D.
Frame
- 12.What contains bays of the same functional equipment?
- A.
Bay
- B.
Card
- C.
Shelf
- D.
Frame
- 13.Which Digital Multiplex System (DMS) component uses 16-bit Motorola 68000 or 8-bit Intel microprocessors?
- A.
A device controller
- B.
The network message controller
- C.
A peripheral module's (PM) peripheral processor (PP)
- D.
The computing module's (CM) central processing unit (CPU)
- 14.How many channels of data does each digital signal (DS) 30 speech link carry?
- A.
30
- B.
32
- C.
34
- D.
36
- 15.Up to how many duplicated digital signals (DS)-30 links are used to connect a line group controller (LGC) to the network module (NM)?
- A.
6
- B.
8
- C.
16
- D.
24
- 16.What type of digital signal (DS) links are used to connect the Digital Multiplex System (DMS)-Core and the DMS-Bus?
- A.
1
- B.
30
- C.
30A
- D.
512
- 17.How many inter-message switch links (IMSL) can be configured in a SuperNode?
- A.
2
- B.
4
- C.
8
- D.
16
- 18.Where are the system clocks located within the SuperNode?
- A.
Network module (NM)
- B.
Peripheral module (PM)
- C.
Digital Multiplex System (DMS)-Bus
- D.
DMS-Core
- 19.What type of digital signal (DS) protocol is used as a message carrier between the Digital Multiplex System (DMS)-Bus and the network modules (NM) and input/output controller (IOC)?
- A.
1
- B.
3
- C.
30
- D.
512
- 20.Where are the DMS-Core and DMS-Bus housed?
- A.
Line trunk controller (LTC)
- B.
Dual plane combined core (DPCC)
- C.
Multipoint controller (MC)
- D.
Multipoint control unit (MCU)
- 21.What is the first step in the pulse code modulation (PCM) process?
- A.
Discrete amplitudes are assigned to the sampling pulses
- B.
A binary code number is assigned to the sample
- C.
The quantizer limits the amplitude of the pulses
- D.
The analog signal is band-limited
- 22.In the pulse code modulation (PCM) process, changing the quantized samples into a binary word is called:
- A.
Encoding
- B.
Sampling
- C.
Quantization
- D.
Band limiting
- 23.What is a method of putting many users on a single cable pair?
- A.
Time code multiplexing
- B.
Pulse code modulation
- C.
Pulse amplitude modulation
- D.
Time division multiplexing
- 24.In the time division multiplexing (TDM) process, the rate of sampling must be equal to:
- A.
The lowest frequency sampled multiplied by the sampling rate per cycle
- B.
The highest frequency sampled multiplied by the sampling rate per cycle
- C.
Twice the lowest frequency sampled multiplied by the sampling rate per cycle
- D.
Twice the highest frequency sampled multiplied by the sampling rate per cycle
- 25.Each 125 microsecond time period in the digital signal (DS) 30 signaling format (used within the voice network system) is called a:
- A.
Span
- B.
Frame
- C.
Channel
- D.
Snapshot
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