3D151 Volume 2
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Volume 2 3D151
- 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.
Pressurized causing them to be released to the atmosphere
- D.
Heated rapidly causing them to move closer together
- 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.
Black body radiation
- C.
Molecular breakdown
- D.
Amplitude variations
- 5.In hertz (Hz), what is the actual voice frequency band?
- A.
300 to 1600
- B.
300 to 3400
- C.
300 to 3800
- D.
300 to 2600
- 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.
Meridian System Logic (MSL)–100.
- B.
DMS–200
- C.
DMS–100
- D.
System load (SL)–1.
- 8.What is the maximum number of ports that a Meridian System Logic (MSL)–100 will support?
- A.
30,000
- B.
300,000
- C.
100,000
- D.
10,000
- 9.Which type link is normally used to interconnect two peripheral modules (PM) in the Digital Multiplex System (DMS)?
- A.
DS–30A
- B.
Digital signal (DS)–1
- 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)?What major area is connected to the central side (C-side) of a network module (NM) in the Digital Multiplex System (DMS)?
- A.
Peripheral module (PM)
- B.
Control node (CN)
- C.
Central control
- D.
Message controller (MC)
- 11.What is the mounting bracket called on which transmission or switching equipment is mounted in a Digital Multiplex System (DMS)?
- A.
Bay
- B.
Card
- C.
Frame
- D.
Shelf
- 12.What contains bays of the same functional equipment?
- A.
Shelf
- B.
Card
- C.
Bay
- D.
Frame
- 13.Which Digital Multiplex System (DMS) component uses 16–bit Motorola 68000 or 8bit Intel microprocessors?
- A.
A peripheral module’s (PM) peripheral processor (PP)
- B.
The computing module’s (CM) central processing unit (CPU)
- C.
A device controller
- D.
The network message controller
- 14.How many channels of data does each digital signal (DS) 30 speech link carry?
- A.
32
- B.
30
- C.
36
- D.
34
- 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.
16
- B.
8
- C.
24
- D.
6
- 16.What type of digital signal (DS) links are used to connect the Digital Multiplex System (DMS)-Core and the DMS-Bus?
- A.
512
- B.
30A
- C.
1
- D.
30
- 17.How many inter message switch links (IMSL) can be configured in a SuperNode?
- A.
2
- B.
16
- C.
8
- D.
4
- 18.Where are the system clocks located within the SuperNode?
- A.
Network module (NM)
- B.
Digital Multiplex System (DMS)-Bus
- C.
Peripheral module (PM)
- 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.
512
- D.
30
- 20.Where are the DMS-Core and DMS-Bus housed?
- A.
Line trunk controller (LTC)
- B.
Multipoint control unit (MCU)
- C.
Multipoint controller (MC)
- D.
Dual plane combined core (DPCC)
- 21.What is the first step in the pulse code modulation (PCM) process?
- A.
The analog signal is band-limited
- B.
The quantizer limits the amplitude of the pulses
- C.
A binary code number is assigned to the sample
- D.
Discrete amplitudes are assigned to the sampling pulses
- 22.In the pulse code modulation (PCM) process, changing the quantized samples into a binary word is called
- A.
Band limiting
- B.
Encoding
- C.
Sampling
- D.
Quantization
- 23.What is a method of putting many users on a single cable pair?
- A.
Pulse code modulation
- B.
Pulse amplitude modulation.
- C.
Time code multiplexing
- 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.
Twice the lowest frequency sampled multiplied by the sampling rate per cycle
- C.
The highest frequency sampled multiplied by the sampling rate per cycle
- D.
Twice the highest frequency sampled multiplied by the sampling rate per cycle
- 25.Each 125μs time period in the digital signal (DS) 30 signaling format (used within the voice network system) is called a
- A.
Snapshot
- B.
Frame
- C.
Channel
- D.
Span
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