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MIS 505 Chapter 4: Making Decisions MULTIPLE CHOICE PART 2 1. A selection with an action that is associated with each of two possible outcomes is known as a(n) ____ selection. a. unary c. octal b. binary d. semiconductor 2. The keyword that is NOT included in a single-alternative selection is ____. a. if c. else b. then d. endif 3. Boolean expressions are named after ____. a. Harold Boolean c. George Boole b. Henry Boole d. Gerhardt Boolean 4. ____ operators require two operands. a. Unary c. Binary b. Tertiary d. Double 5. The ____ sign means “greater than.” a. < c. <= b. = d. > 6. Usually, ____ variables are not considered to be equal unless they are identical. a. string c. character b. integer d. floating point 7. When you ask multiple questions before an outcome is determined, you create a ____ condition. a. dual-alternative c. single-alternative b. nested d. compound 8. A(n) ____ decision is a decision in which two conditions must be true for an action to take place. a. OR c. AND b. XOR d. OR-ELSE 9. A series of nested if statements is also called a ____ if statement. a. stacked c. bonded b. cascading d. hooked 10. Most languages allow you to use a variation of the decision structure called the ____ structure when you must nest a series of decisions about a single variable. a. blocked c. AND IF b. case d. logical 11. Most programming languages allow you to ask two or more questions in a single comparison by using a(n) ____ operator that joins decisions in a single statement. a. AND c. IF b. OR d. XOR 12. For maximum efficiency, a good rule of thumb in an AND decision is to ____. a. first ask the question that is more likely to be true b. first ask the question that is more likely to be false c. rewrite it as an OR decision and ask the question more likely to be true d. rewrite it as an OR decision and ask the question more likely to be false 13. ____ evaluation is when each part of an expression that uses an operator is evaluated only as far as necessary to determine whether the entire expression is true or false. a. Truth c. Binary b. Short-circuit d. Loop 14. When creating a truth table, you must determine how many possible Boolean value combinations exist for the conditions. If there are two conditions, ____ combinations will exist. a. two c. eight b. four d. 16 15. In a truth table, the expression ____ is true. a. true AND true c. false AND true b. true AND false d. false AND false 16. The conditional AND operator in Java, C++, and C# is ____. a. & c. ** b. AND d. && 17. ____ are diagrams used in mathematics and logic to help describe the truth of an entire expression based on the truth of its parts. a. Decision matrices c. Truth diagrams b. Decision diagrams d. Truth tables 18. A(n) ____ decision is a decision in which at least one of two conditions must be true for an action to take place. a. OR c. AND b. nested d. NOT 19. In a truth table, the expression ____ is false. a. true OR true c. false OR true b. true OR false d. false OR false 20. For maximum efficiency, a good rule of thumb in an OR decision is to ____. a. first ask the question that is more likely to be true b. first ask the question that is more likely to be false c. rewrite it as an AND decision and ask the question more likely to be true d. rewrite it as an AND decision and ask the question more likely to be false 21. C#, C++, C, and Java use the symbol ____ as the logical OR operator. a. % c. || b. $ d. ^ 22. You use the logical ____ operator to reverse the meaning of a Boolean expression. a. AND c. OR b. XOR d. NOT 23. You can perform a ____ by making comparisons using either the lowest or highest value in a range of values. a. range check c. logic check b. nested if d. trivial expression 24. When you combine AND and OR operators, the ____ operators take precedence, meaning their Boolean values are evaluated first. a. addition c. OR b. AND d. division 25. You can use ____ for clarity and to override the default order of operations. a. parentheses c. multiplication b. truth tables d. NOT