Introduction To IT - Boolean Logic

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| By Damzinium
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Damzinium
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  • 1/14 Questions

     In Boolean algebra, A + 1 = 1.

    • True
    • False
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Introduction To IT - Boolean Logic - Quiz
About This Quiz

Explore the fundamentals of Boolean Logic in IT through this quiz. Test your understanding of Boolean expressions, literals, and logical operations. This quiz is ideal for learners aiming to enhance their IT skills and grasp essential logical concepts.

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  • 2. 

    The OR function is Boolean multiplication and the AND function is Boolean addition.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is false. The OR function in Boolean logic is actually Boolean addition, where the output is true if at least one of the inputs is true. On the other hand, the AND function is Boolean multiplication, where the output is true only if both inputs are true.

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  • 3. 
    This image represents a                                gate. - ProProfs

    This image represents a                                gate.

    Correct Answer
    NOT
    Explanation
    The easiest way to remember this is that it has a "knot" at the tip of the triangle

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  • 4. 
    The symbol shown below is for a 2-input NAND gate. - ProProfs

    The symbol shown below is for a 2-input NAND gate.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The symbol shown below is not for a 2-input NAND gate.

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  • 5. 

    Which of the following is true of a NOR gate?

    • It always yields a positive result.

    • It always yields a negative result.

    • It is the negative of the OR gate

    • It is the same as the OR gate

    Correct Answer
    A. It is the negative of the OR gate
    Explanation
    With the NOR gate, where ever the OR gate would have yielded a 1(positive), it becomes a negative (0)

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  • 6. 

    By applying De Morgan's theorem to a NOR gate, two identical truth tables can be produced.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    De Morgan's theorem states that the complement of a logical operation can be obtained by interchanging the operation with its complement and negating the result. In the case of a NOR gate, it performs the logical operation of OR followed by negation. By applying De Morgan's theorem to a NOR gate, we can interchange the OR operation with its complement (AND) and negate the result. This results in a new gate that performs the AND operation followed by negation, which is equivalent to a NAND gate. Since the truth tables for NOR and NAND gates are identical, it is true that two identical truth tables can be produced by applying De Morgan's theorem to a NOR gate.

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  • 7. 

    An equivalent representation for the Boolean expression A' + 1 is

    • 1

    • A

    • A'

    • 0

    Correct Answer
    A. 1
    Explanation
    From the Boolean property A + 1 = 1, let A = A'. It's that simple!

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  • 8. 
    Draw a logic table for the diagram above and determine the output.   - ProProfs

    Draw a logic table for the diagram above and determine the output.  

    • No answer is needed. You can skip this question.

    • No answer is needed. You can skip this question.

    Correct Answer
    A. No answer is needed. You can skip this question.
  • 9. 

    SOP stands for sum-of-powers

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because SOP does not stand for "sum-of-powers." SOP stands for "Standard Operating Procedure," which refers to a set of step-by-step instructions or guidelines that must be followed to carry out a specific task or operation.

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  • 10. 

    Simplification of the Boolean expression AB + ABC + ABCD + ABCDE + ABCDEF yields which of the following results?

    • ABCDEF

    • AB

    • A + B + C + D + E + F

    • A + B(C+D(E+F))

    Correct Answer
    A. AB
    Explanation
    Repeated application of the absorption theorem x + xy = x, gives the desired result.

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  • 11. 

    Which of the following is the best definition of a literal?

    • 1 or 2

    • The complement of a Boolean variable

    • The actual understanding of a Boolean variable

    • A Boolean variable

    Correct Answer
    A. 1 or 2
    Explanation
    A literal can be defined as either 1 or 2. In Boolean algebra, a literal is a variable or its complement, represented by either its true or false value. So, option 1 or 2 accurately describes this definition of a literal. Option 3, "A Boolean variable," is not a complete definition of a literal as it does not include the concept of complement. Option 2, "The actual understanding of a Boolean variable," is not a clear or accurate definition of a literal.

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  • 12. 

    When output is determined solely by output, it is called a                                           logic.

    Correct Answer
    Combinational
    Explanation
    When output is determined solely by input, it is called combinational logic. In this type of logic, the output is a function of the current input values and does not depend on any previous inputs or outputs. It is called "combinational" because the output is determined by combining the input values using logical operations such as AND, OR, and NOT. This is in contrast to sequential logic, where the output also depends on the previous state of the system.

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  • 13. 

    Also OR can be represented by? 

    Correct Answer
    + (plus)
    Explanation
    The correct answer is + (plus) because the symbol "+" is commonly used to represent the logical operator "OR" in computer programming and boolean algebra. It signifies that at least one of the conditions or operands is true.

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  • 14. 

    In boolean logic, what symbol can be used to represent AND?

    Correct Answer
    . (full stop)
    Explanation
    In boolean logic, the symbol "." (full stop) is used to represent the AND operation. This symbol is used to combine two or more conditions or statements, and it returns true only if all the conditions are true.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 05, 2016
    Quiz Created by
    Damzinium
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