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MCQs

Total Questions : 69 | Page 5 of 7 pages
Question 41. The SQL statements that take care of security and authorization are
  1.    DDL
  2.    DML
  3.    DCL
  4.    None
 Discuss Question
Answer: Option C. -> DCL
Question 42. Which is not a task of a configuration management?
  1.    Reporting
  2.    Version control
  3.    Quality control
  4.    Change management
 Discuss Question
Answer: Option C. -> Quality control
Question 43. Component Testing is also called as
  1.    Unit testing
  2.    Module testing
  3.    Program testing
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 44.  The determination of a digital signal's frequency and waveshape is best accomplished with which test equipment?
  1.    an oscilloscope
  2.    a multimeter
  3.    a spectrum analyzer
  4.    a frequency generator
 Discuss Question
Answer: Option A. -> an oscilloscope
Question 45.  A series of gradually decreasing sine wave oscillations is called:
  1.    ringing
  2.    slew
  3.    overshooting
  4.    undershooting
 Discuss Question
Answer: Option A. -> ringing
Question 46.  Which test equipment best allows a comparison between input and output signals?
  1.    an oscilloscope
  2.    a logic probe
  3.    a spectrum analyzer
  4.    a multitrace oscilloscope
 Discuss Question
Answer: Option D. -> a multitrace oscilloscope
Question 47.  Measurement of pulse width should be taken at a 50% mean of the:
  1.    overshoot and undershoot
  2.    rise and fall
  3.    damping and ringing
  4.    leading and trailing amplitude
 Discuss Question
Answer: Option B. -> rise and fall
Question 48.  A +5 V PCB power source that has been "pulled down" to a +3.4 V level may be due to:
  1.    a circuit open
  2.    a faulty regulator
  3.    the half-split method
  4.    a circuit short
 Discuss Question
Answer: Option D. -> a circuit short
Question 49.  
A logic probe is placed on the output of a gate and the display indicator is dim. A logic pulser is used on each of the input terminals, but the output indication does not change. What is wrong?
  1.    The dim indication on the logic probe indicates that the supply voltage is probably low.
  2.    The output of the gate appears to be open.
  3.    The LOW indication is the result of a bad ground connection on the logic probe.
  4.    The gate is a tri-state device.
 Discuss Question
Answer: Option B. -> The output of the gate appears to be open.
Question 50.  What is the next step after discovering a faulty gate within an IC?
  1.    repair the gate
  2.    resolder the tracks
  3.    replace the IC involved
  4.    recheck the power source
 Discuss Question
Answer: Option C. -> replace the IC involved

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