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CET practice exam 2 questions with complete solutions
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CET practice exam 2 questions with complete solutions
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CET practice exam 2 questions withcomplete solutions
A track on a computer removable disk is:
A. one record
B. divided into sectors
C. created as data is written
D. one continuous path - correct answer ✔✔B: divided into sectors
A PC has Conventional RAM and ROM memory area (in a PC it is 0 to 640 kilobytes); Upper memory area
( 640 Kb to 1 Meg) and Extended memory area (above 1 Meg). What other names are internal memory
types do PCs have?
A. Cache
B. tape drive
C. resistor array
D. expended - correct answer ✔✔A: cache
Which video system has the highest resolution?
a. EGA
b. VGA
c. SVGA
d. XVGA - correct answer ✔✔D: XVGA
You would want to use a dual trace oscilloscope to measure:
,A. signal differences between two points
B. suspected resistance problems in one circuit
C. one faulty circuit in voltage level while another is faulty in a current level
D. one fault in video and the other in audio - correct answer ✔✔A: signal differences between two
points
Common Intermediate Frequencies (IF) for AM and FM commercial broadcast receivers are:
A. 455 kHz and 1.2 GHz
B. 288 kHz and 455 kHz
C. 455 kHz and 10.7 MHz
D. 288 kHz and 10.7 MHz - correct answer ✔✔C: 455 kHz and 10.7 MHz
Analog radio receiver signal compression:
A. uses D/A converters
B. reduces the high frequency receiver signal amplitude
C. changes AM to FM
D. primarily increases background noise levels - correct answer ✔✔B: reduces the high frequency
receiver signal amplitude
Coaxial cable line losses at RF frequencies are due to:
A. wire resistance, capacitive and inductive reactance
B. wire resistance, dielectric fading and transconductance
C. capacitive and inductive reactance and braid leakage
D. magnetic effects of nearby materials - correct answer ✔✔A: wire resistance, capacitive and inductive
reactance
, You are troubleshooting audio reproduction equipment and measure the signal to be input into the
audio amplifier. What approximate RMS level would you expect that signal to be?
A. audio signals vary too much to be measured
B. 1 microvolt
C. 1 millivolt
D. 1,000 millivolts - correct answer ✔✔D: 1,000 millivolts
The noise level in a radio receiver is generated mostly in the:
A. IF stages
B. local oscillator
C. audio section
D. RF section - correct answer ✔✔D: RF section
The fast charging rate for a NiCad or Ni-MH battery should not exceed _______ % of its AHr, or ampere-
hour rating.
A. 5
B. 100
C. 25
D: 10 - correct answer ✔✔D: 10
Which one of the following in a PC would be park of disk operations?
A. serial port board
B. DMA ports
C. CGA controller
D. SATA or IDE controller - correct answer ✔✔D: SATA or IDE controller
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