Practice Problems for Computers

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Practice Problems for Computers

• CVEN 4301-17
• CVEN 5301-17
• TSTP 1040

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• 1. Which of the following are true statements
  regarding user-defined functions in a general
  programming language?
• I. A function is more versatile than a
  subroutine, as it is not limited to mathematical
  calculations.
• II. A function is defined as a variable in the
  main program.
• III. A function may be used repeatedly, anywhere
  in the program.
• A. I only
• B. I and II
• C. I and III
• D. II and III

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• 2. Which of the following statements is FALSE
  regarding FORTRAN programming?
• (A) No FORMAT statement is required with
  unformatted READ or WRITE statements.
• (B) An arithmetic IF statement can only be used
  to evaluate an arithmetic statement.
• (C) More than one STOP statement is permitted in
  a program.
• (D) FORMAT is not an executable statement.

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• 3. Logical statements X and Y are FALSE, and Z is
  TRUE. Which of the following logical
• expressions is TRUE?
• (A) .NOT.Z.AND.X
• (B) Y.AND.Z.OR.X
• (C) .NOT.(X.AND.Y)
• (D) .NOT.X.OR.NOT.Z

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• 4. Y(I) represents values in an array indexed to
  the integer variable I.
• I Y(I)
• 1 90
• 2 -20
• 3 410
• 4 70
• 5 17
• When B 2, the value of Y(B2) is equal to
• (A) -18
• (B) 17
• (C) 70
• (D) 90

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• 5. Before being executed, computer programs are
  loaded into memory. The memory storage
  component to which this refers is
• (A) cache
• (B) RAM
• (C) ROM
• (D) EPROM

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• 6. Consider the following generic code program.
• 10 N 0
• 15 GO TO 50
• 20 FOR X -1 TO 7
• 25 N 6
• 30 FOR Y 3 TO 6
• 35 N XY16
• 40 NEXT Y
• 45 NEXT X
• 50 PRINT N
• 55 END
• After completion, the value assigned to N is
• (A) -356
• (B) 0
• (C) 98
• (D) 1021

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• 7. What is the binary (base-2) number that is
  equivalent to the decimal (base-10) number 129?
• (A) 10000001
• (B) 10101001
• (C) 10011111
• (D) 11110001

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• 8. Data are collected at the rate of 14.4 kbps
  and spooled to diskette. How long will it take to
  fill a diskette having a usable capacity of 1.44
  MB?
• (A) 1.7 min
• (B) 10 min
• (C) 13 min
• (D) 14 min

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• 9. The sensitivity of a feedback loop (system) is
  defined as the ratio of the
• (A) forward transfer function to the reverse
  transfer function
• (B) percentage change in the loop transfer
  function to percentage change in the forward
  transfer function
• (C) output signal to the input signal
• (D) change in the forward transfer function to
  the percentage change in the loop transfer
  function

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• 10. What is the decimal (base-10) number
  equivalent to the binary (base-2) number
  101101110?
• (A) 175
• (B) 255
• (C) 309
• (D) 366