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Review Questions;1. Which of the following is true?;a. A program can call one method at most.;b. A program can contain...

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Review Questions;1. Which of the following is true?;a. A program can call one method at most.;b. A program can contain a method that calls another method.;c. A method can contain one or more other methods.;d. All of these are true.;2. Which of the following must every method have?;a. a header;b. a parameter list;c. a return value;d. all of these;3. Which of the following is most closely related to the concept of local?;a. abstract;b. object-oriented;c. in scope;d. program level;4. Although the terms parameter and arguments are closely related, the difference is that argument refers to _____.;a. a passed constant;b. a value in a method call;c. a formal parameter;d. a variable that is local to a method;5. A method?s interface is its _____.;a. signature;b. return type;c. identifier;d. parameter list;6. When you write the declaration for a method that can receive a parameter, which of the following must be included in the method declaration?;a. the name of the argument that will be used to call the method;b. a local name for the parameter;c. the return value for the method;d. two of these;7. When you use a variable name in a method call, it _____ as the variable in the method header.;a. can have the same name;b. cannot have the same name;c. must have the same name;d. cannot have the same data type;8. Assume you have written a method with the header void myMethod(num a, string b). Which of the following is a correct method call?;a. myMethod(12);b. myMethod(12, ?Hello?);c. myMethod(?Goodbye?);d. It is impossible to tell.;9. Assume you have written a method with the header num yourMethod(string name, num code). The method?s type is _____.;a. num;b. string;c. num and string;d. void;10. Assume you have written a method with the header string myMethod(num score, string grade). Also assume you have declared a numeric variable named test. Which of the following is a correct method call?;a. myMethod();b. myMethod(test);c. myMethod(test, test);d. myMethod(test,?A?);11. The value used in a method?s return statement must _____.;a. be numeric;b. be a variable;c. match the data type used before the method name in the header;d. two of the above;12. When a method receives a copy of the value stored in an argument used in the method call, it means the variable was _____.;a. unnamed;b. passed by value;c. passed by reference;d. assigned its original value when it was declared;13. A void method _____.;a. contains no statements;b. requires no parameters;c. returns nothing;d. has no name;14. When an array is passed to a method, it is _____.;a. passed by reference;b. passed by value;c. unnamed in the method;d. unalterable in the method;15. When you overload a method, you write multiple methods with the same_____.;a. name;b. parameter list;c. number of parameters;d. return type;16. A program contains a method with the header num calculateTaxes(num amount, string name). Which of the following methods can coexist in the same program with no possible ambiguity?;a. num calculateTaxes(string name, num amount);b. string calculateTaxes(num money, string taxpayer);c. num calculateTaxes(num annualPay, string taxpayerId);d. All of these can coexist without ambiguity.;17. Methods in the same program with identical names and identical parameter lists are _____.;a. overloaded;b. overworked;c. overwhelmed;d. ambiguous;18. Methods in different programs with identical names and identical parameter lists are _____.;a. overloaded;b. illegal;c. both of these;d. none of these;19. The notion of _____ most closely describes the way a calling method is not aware of the statements within a called method.;a. abstraction;b. object-oriented;c. implementation hiding;d. encapsulation;20. Programmers should strive to _____.;a. increase coupling;b. increase cohesion;c. both of the above;d. neither a nor b

 

Paper#72915 | Written in 18-Jul-2015

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