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Exam 3: Decision Structures and Boolean Logic

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Question 1

Multiple Choice

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What is the result of the following Boolean expression, if x equals 5, y equals 3, and z equals 8? X < y or z > x

A) true
B) false
C) 8
D) 5

E) C) and D)
F) A) and C)

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Question 2

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The decision structure that has two possible paths of execution is known as _____.

A) single alternative
B) double alternative
C) dual alternative
D) two alternative

E) A) and B)
F) A) and D)

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C

Question 3

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The _______________ statement is used to create a decision structure.

Boolean variables are commonly used as _______________ to indicate whether a specific condition exists.

A(n) _______________ decision structure provides only one alternative path of execution.

A(n) _______________ expression is made up of two or more Boolean expressions.

The not operator is a unary operator and it must be a compound expression.

Expressions that are tested by the if statement are called Boolean expressions.

What is the result of the following Boolean expression, if x equals 5, y equals 3, and z equals 8? Not (x < y or z > x) and y < z

Python provides a special version of a decision structure known as the _______________ statement, which makes the logic of the nested decision structure simpler to write.

In flowcharting, the _______________ symbol is used to represent a Boolean expression.

What is the result of the following Boolean expression, if x equals 5, y equals 3, and z equals 8? X < y and z > x

In a decision structure, the action is _______________ executed because it is performed only when a certain condition is true.

When using the _____ operator, one or both subexpressions must be true for the compound expression to be true.

The if statement causes one or more statements to execute only when a Boolean expression is true.

In Python the _____ symbol is used as the equality operator.

Decision structures are also known as selection structures.

Which logical operators perform short-circuit evaluation?

The Python language is not sensitive to block structuring of code.

A(n) _______________ operator determines whether a specific relationship exists between two values.