CDC 3D152 Ure Volume 3

100 Questions | By Catherinehalcomb | Updated: Mar 20, 2022 | Attempts: 190

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Systems and procedures.

Questions and Answers

1.

One disadvantage of microwave wavelengths is that the frequencies are susceptible to
- A.
  
  A. line noise.
- B.
  
  B. weather effects.
- C.
  
  C. frequency distortion.
- D.
  
  D. electromagnetic interference.
2.

What is not a factor in determining the refractive index of air?
- A.
  
  A. Atmospheric pressure.
- B.
  
  B. Propagation medium.
- C.
  
  C. Temperature.
- D.
  
  D. Moisture.
3.

The determining factor in calculating the correct size of a waveguide is
- A.
  
  A. frequency.
- B.
  
  B. power output.
- C.
  
  C. bandwidth of the transmission medium.
- D.
  
  D. distance between equipment and transmitter.
4.

How many miles above the earth are satellites placed in orbit?
- A.
  
  A. 2,230.
- B.
  
  B. 2,320.
- C.
  
  C. 22,300.
- D.
  
  D. 23,200.
5.

Which satellite communications system is used to transmit space operations?
- A.
  
  A. Milstar Communication System.
- B.
  
  B. Defense Satellite Communications System (DSCS).
- C.
  
  C. Air Force Satellite Communications (AFSATCOM).
- D.
  
  D. Ground Mobile Forces Satellite Communications (GMFSC).
6.

To transmit an audio signal over radio frequency (RF), it first has to be
- A.
  
  A. phase shifted.
- B.
  
  B. transmitted.
- C.
  
  C. modulated.
- D.
  
  D. encoded.
7.

What is one path high frequency (HF) transmissions follow from the antenna to the distant end?
- A.
  
  A. Lightwave.
- B.
  
  B. Microwave.
- C.
  
  C. Soundwave.
- D.
  
  D. Groundwave.
8.

Which is not a disadvantage of laser light transmission?
- A.
  
  A. No need for careful alignment of transmitter and receiver.
- B.
  
  B. Cannot penetrate even very thin curtains or paper.
- C.
  
  C. Sensitive to atmospheric interference.
- D.
  
  D. Strictly line-of-sight (LOS) transmission.
9.

Broadband refers to a technology that can transmit
- A.
  
  A. a relatively wide range of frequencies.
- B.
  
  B. only high frequency information.
- C.
  
  C. a relatively wide range of amplitudes.
- D.
  
  D. only high amplitude information.
10.

Broadband technology uses all of these transmission mediums except?
- A.
  
  A. Telephone lines.
- B.
  
  B. Television cable lines.
- C.
  
  C. Satellite systems.
- D.
  
  D. laser light.
11.

The Integrated Services Digital Network (ISDN) configuration normally used to connect switches together is the
- A.
  
  A. basic rate interface (BRI).
- B.
  
  B. primary rate interface (PRI).
- C.
  
  C. trunk rate interface (TRI).
- D.
  
  D. switch rate interface (SRI).
12.

How many B and D channels does the standard configuration in North American Integrated Service Digital Network (ISDN) primary rate interface (PRI) application use?
- A.
  
  A. 2, 1.
- B.
  
  B. 30, 2.
- C.
  
  C. 1, 24.
- D.
  
  D. 23, 1.
13.

What was the primary driving factor behind the invention of the telephone exchange system?
- A.
  
  A. Point-to-point telephone access caused cabling issues.
- B.
  
  B. The invention of the multi-line telephone.
- C.
  
  C. Military communication requirements.
- D.
  
  D. Radio communication requirements.
14.

When a telephone network is circuit switched, each call
- A.
  
  A. is broadcast over multiple paths between switches.
- B.
  
  B. is packetized and transmitted in circuitous bursts.
- C.
  
  C. has a dedicated circuit created by the switch.
- D.
  
  D. requires a dedicated switch to make the connection.
15.

The three cornerstones of voice network system security are availability,
- A.
  
  A. circumvention, and confidentiality.
- B.
  
  B. circumvention, and disclosure.
- C.
  
  C. confidentiality, and integrity.
- D.
  
  D. disclosure, and integrity.
16.

What is the most serious threat to voice network system integrity?
- A.
  
  A. Subversion.
- B.
  
  B. Unauthorized monitoring.
- C.
  
  C. Inexperienced switch technicians.
- D.
  
  D. Inadequate maintenance practices.
17.

How many serial data interface ports does the Meridian Option 11C Small System Controller have?
- A.
  
  A. 32.
- B.
  
  B. 12.
- C.
  
  C. 3.
- D.
  
  D. 1.
18.

What role does the Private Branch Exchange (PBX) play in the telephony industry?
- A.
  
  A. A medium scale switch that handles traffic for a small city.
- B.
  
  B. A very small scale switch that is also known as a key system.
- C.
  
  C. A large scale switch that handles the traffic for a metropolitan area.
- D.
  
  D. A small scale switch that handles internal calls for an organization.
19.

Which models of the digital multiplex system (DMS) family are commonly used at Air Force bases to provide base telephone services?
- A.
  
  A. DMS-100 and Meridian System Logic (MSL)-100.
- B.
  
  B. DMS-100/200 and MSL-100.
- C.
  
  C. DMS-100/200 and DMS-200.
- D.
  
  D. DMS-200 and MSL-100.
20.

What is the maximum number of ports that a digital multiplex system-100 (DMS-100) supports?
- A.
  
  A. 10,000.
- B.
  
  B. 30,000.
- C.
  
  C. 100,000.
- D.
  
  D. 300,000.
21.

Which elements make up the control component of the SuperNode central control?
- A.
  
  A. Computing mode (CM) and message switches (MS).
- B.
  
  B. CM and system load module (SLM).
- C.
  
  C. Central processing unit (CPU) and control monitor unit (CMU).
- D.
  
  D. CPU, digital signal (DS), and peripheral module (PM).
22.

What link is used to connect the digital mulitplex system (DMS)-cor to the DMS-bus?
- A.
  
  A. DS-1.
- B.
  
  B. DS-30.
- C.
  
  C. DS-30A.
- D.
  
  D. DS-512.
23.

Which major component of the NorTel digital switching system (DSS) interfaces line and trunk subscribers?
- A.
  
  A. Central control.
- B.
  
  B. input/output (I/O).
- C.
  
  C. peripheral module (PM).
- D.
  
  D. peripheral subsystem (PS).
24.

What components are directly connected to the input/output controller (IOC)?
- A.
  
  A. Printer, visual display unit (VDU), and tape drives.
- B.
  
  B. A pair of SuperNode message controllers and the device controllers.
- C.
  
  C. A maintenance and administration position (MAP).
- D.
  
  D. The central processing unit (CPU) and keyboard.
25.

Base cables normally enter the central office (CO) facility through a
- A.
  
  A. cable manhole.
- B.
  
  B. telecommunications cable closet.
- C.
  
  C. building cable raceway.
- D.
  
  D. cable vault.