Communications - Electronics Journeyman CDC 2EX5X
Multiple Choice on Volumes 1-3 of Career Development Course 2EX5X
- 1.What is the minimum amount of months required for 5-level upgrade for trainees who are now in retraining status?
- A.
6 months
- B.
9 months
- C.
12 months
- D.
15 months
- 2.What purpose of modulation prevents interference when sharing the same communication path?
- A.
Spectrum conservation
- B.
Channel allocation
- C.
Ease of radiation
- D.
Companding
- 3.What color is used to mark sewer and drain lines?
- A.
Blue
- B.
White
- C.
Green
- D.
Purple
- 4.What type of Air Force Specialty Code is for use by the Air Force Personnel Center for assignment and training purposes?
- A.
Duty
- B.
Control
- C.
Primary
- D.
Ten
- 5.The output of the oscillator in an FM modulator increases in frequency with each
- A.
Positive half cycle of the carrier
- B.
Negative half cycle of the carrier
- C.
Positive half cycle of the modulating signal
- D.
Negative half cycle of the modulating signal
- 6.What facility ground subsystem is also called the safety ground?
- A.
The earth electrode subsystem
- B.
The fault protection subsystem
- C.
The signal reference subsystem
- D.
The lightening protection subsystem
- 7.What Air Force Specialty Code performs maintenance on fixed and mobile meteorological and navigational aids systems, ground to air transmitters, receivers and transceivers?
- A.
2E0X1 Ground Radar Systems
- B.
2E1X1 Satellite, Wideband and Telemetry Systems
- C.
2E1X2 Airfield Systems
- D.
2E1X3 Ground Radio Communications
- 8.What is the formula to find the modulating index?
- A.
Deviation / Frequency
- B.
Deviation x Frequency
- C.
Sideband / Modulating Frequency
- D.
Sideband x Modulating Frequency
- 9.At what distance should the rods be spaced in a multi-rod grounding configuration?
- A.
0.5 to 2 times the length of the longest rod in the subsystem
- B.
1.5 to 3 times the length of the longest rod in the subsystem
- C.
2.5 to 4 times the length of the longest rod in the subsystem
- D.
3.5 to 5 times the length of the longest rod in the subsystem
- 10.When are Senior Noncommissioned Officers required to have on-the-job training records?
- A.
When assigned to new duty station
- B.
When the commander deems necessary
- C.
When assigned to a commander's staff position
- D.
When their skill level is not commensurate with their grade
- 11.By using 16-PSK, how many bit combinations are allowed to be used?
- A.
2
- B.
3
- C.
4
- D.
5
- 12.What is the establishment of a low-impedance path between two metal surfaces?
- A.
Bonding
- B.
Shielding
- C.
Annealing
- D.
Grounding
- 13.How many hours of rest must a supervisor give personnel who remain overnight at a remote duty location?
- A.
A minimum of 6 hours
- B.
A maximum of 6 hours
- C.
A minimum of 8 hours
- D.
A maximum of 8 hours
- 14.Non-uniform quantizing and companding decreases the length of the code word from
- A.
11 to 7 bits
- B.
11 to 8 bits
- C.
16 to 7 bits
- D.
16 to 8 bits
- 15.What is known as a set of standards for limiting electric or electromagnetic radiation?
- A.
COMPUSEC
- B.
TEMPEST
- C.
COMSEC
- D.
EMSEC
- 16.Which tool is provided to the commander on a quarterly basis to review and evaluate maintenance and training effectiveness?
- A.
Unit Training Report from logistics module
- B.
Cross reference data from federal logistics information system
- C.
Air tasking order from theater battle manage core system
- D.
Training visibility ledger from integrated maintenance data systems
- 17.Using the longitudinal redundancy check method of error correction, what does the receiver compare with the transmitter to ensure an accurate transmission of data?
- A.
The checksum
- B.
Block check character
- C.
The ASCII character set
- D.
The sum of the transmitted bits
- 18.What form is frequently used to initiate the need for a new communications service?
- A.
AF IMT 9, Request for Purchase
- B.
AF IMT 2005, Issue/Turn-In Request
- C.
AF IMT 3064, Contract Progress Schedule
- D.
AF IMT 3215, IT/NSS Requirements Document
- 19.What status is the same as estimated time in commission?
- A.
Estimated time of repair
- B.
Estimated time of arrival
- C.
Estimated time of return to operation
- D.
Estimated time of expected maintenance
- 20.When using forward error control as a method of error correction, where does error correction take place?
- A.
Receiving end
- B.
In the oscillator
- C.
Transmitting end
- D.
In the primary buffers
- 21.What is the threshold dollar value of equipment that is placed on CA/CRL?
- A.
Over $1,000
- B.
Over $1,500
- C.
Over $2,000
- D.
Over $2,500
- 22.What designates equipment as reportable?
- A.
When it is mission capable
- B.
When it is mission essential
- C.
When it is full mission capable
- D.
When it is partial mission capable
- 23.What component of a fiber optic cable provides the reflective surface that allows light to propagate?
- A.
Core
- B.
Buffer
- C.
Jacket
- D.
Cladding
- 24.Who maintains a central repository of CSIR information for the Air Force?
- A.
Air Force Communications Agency
- B.
Air Force Institute of Technology
- C.
Engineering Data Service Center
- D.
Technology Repair Center
- 25.What maintenance staff function coordinates with support agencies and assists maintenance personnel be expediting all supply transactions?
- A.
Material control
- B.
Quality assurance
- C.
Maintenance operations center
- D.
Maintenance production work center
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