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Total Questions : 88 | Page 1 of 9 pages
Question 1.  Select the statement that best describes the parity method of error detection:
  1.    Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another.
  2.    Parity checking is not suitable for detecting single-bit errors in transmitted codes.
  3.    Parity checking is best suited for detecting single-bit errors in transmitted codes.
  4.    Parity checking is capable of detecting and correcting errors in transmitted codes
 Discuss Question
Answer: Option C. -> Parity checking is best suited for detecting single-bit errors in transmitted codes.
Question 2.  
Parity systems are defined as either________ or ________ and will add an extra ________ to the digital information being transmitted.
  1.    positive, negative, byte
  2.    odd, even, bit
  3.    upper, lower, digit
  4.    on, off, decimal
 Discuss Question
Answer: Option B. -> odd, even, bit
Question 3.  A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is a(n):
  1.    Ex-NOR gate
  2.    OR gate
  3.    Ex-OR gate
  4.    NAND gate
 Discuss Question
Answer: Option A. -> Ex-NOR gate
Question 4.  A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n):
  1.    Ex-NOR gate
  2.    OR gate
  3.    Ex-OR gate
  4.    NAND gate
 Discuss Question
Answer: Option C. -> Ex-OR gate
Question 5.  Show from the truth table how an exclusive-OR gate can be used to invert the data on one input if the other input is a special control function.
  1.    Using A as the control, when A = 0, X is the same as B. When A = 1, X is the same as B.
  2.    Using A as the control, when A = 0, X is the same as B. When A = 1, X is the inverse of B.
  3.    Using A as the control, when A = 0, X is the inverse of B. When A = 1, X is the same as B.
  4.    Using A as the control, when A = 0, X is the inverse of B. When A = 1, X is the inverse of B.
 Discuss Question
Answer: Option B. -> Using A as the control, when A = 0, X is the same as B. When A = 1, X is the inverse of B.
Question 6.  Determine odd parity for each of the following data words:
1011101 11110111 1001101
  1.    P = 1, P = 1, P = 0
  2.    P = 0, P = 0, P = 0
  3.    P = 1, P = 1, P = 1
  4.    P = 0, P = 0, P = 1
 Discuss Question
Answer: Option D. -> P = 0, P = 0, P = 1
Question 7.  Which type of gate can be used to add two bits?
  1.    Ex-OR
  2.    Ex-NOR
  3.    Ex-NAND
  4.    NOR
 Discuss Question
Answer: Option A. -> Ex-OR
Question 8.  The Ex-NOR is sometimes called the ________.
  1.    parity gate
  2.    equality gate
  3.    inverted OR
  4.    parity gate or the equality gate
 Discuss Question
Answer: Option B. -> equality gate
Question 9.  The format used to present the logic output for the various combinations of logic inputs to a gate is called a(n):
  1.    truth table.
  2.    input logic function.
  3.    Boolean constant.
  4.    Boolean variable.
 Discuss Question
Answer: Option A. -> truth table.
Question 10. . Which of the examples below expresses the distributive law?
  1.    (A + B) + C = A + (B + C)
  2.    A(B + C) = AB + AC
  3.    A + (B + C) = AB + AC
  4.    A(BC) = (AB) + C
 Discuss Question
Answer: Option B. -> A(B + C) = AB + AC

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