ISDS 505 Midterm Study Guide Latest 2024 Questions and Answers (100% Accuracy)

Which of the following is NOT a valid C# identifier Select one: a. _order b. a c. this d. a1 Answer Is: - c. this What is NOT considered a keyword by the C# language? Select one: a. catch b. global c. implicit d. static Answer Is: - b. global In Object-oriented programming language, the ability to create methods that act appropriately depending on the context is called _________. Select one: a. inheritance b. encapsulation c. instance d. polymorphism Answer Is: - d. polymorphism in "using System;", what is "System" referring to? Select one: a. class b. variable c. namespace d. method Answer Is: - c. namespace Which of the following pairs is an example of a class and an object, in that order? Select one: a. animal and bear b. cup and glass c. CSUF and university d. car and vehicle Answer Is: - a. animal and bear What is the value of the expression 3+4*2 ? Select one: a. 10 b. 11 c. 5 d. 14 Answer Is: - b. 11 What is the value of 5>=3? Select one: a. 1 b. 0 c. false d. true Answer Is: - d. true In C#, you use the ____ data type to hold a series of characters. Select one: a. string b. int c. sbyte d. char Answer Is: - a. string Assume you have a variable declared as int var1=5; What is the value of 27%var1 ? Select one: a. 5 b. 2 c. 4 d. 0 Answer Is: - b. 2 Assume that you declared a double variable called unitPrice which is used to get an item's unit price. Which of the following will display the unit price in a currency format with 2 decimal places? Select one: a. Console.WriteLine(unitPrice.ToString()); b. Both Console.WriteLine(unitPrice.ToString("C")); and Console.WriteLine(unitPrice.ToString("C2")); c. Console.WriteLine(unitPrice.ToString("C")); d. Console.WriteLine(unitPrice.ToString("C2")); Answer Is: - b. Both Console.WriteLine(unitPrice.ToString("C")); and Console.WriteLine(unitPrice.ToString("C2")); Programming languages such as C#, Java, and Visual Basic are ____________________languages. a. machine b. high-level c. low-level d. uninterpreted Answer Is: - b. high-level A program that translates high-level programs into intermediate or machine code is a(n) _______________________ . Answer Is: - d. compiler The grammar and spelling rules of a programming language constitute its _____________ . Answer Is: - d. syntax Variables are _______________ . Answer Is: - a. named memory locations Programs in which you create and use objects that have attributes similar to their real-world counterparts are known as ______________ programs Answer Is: - object-oriented Which of the following pairs is an example of a class and an object, in that order? Answer Is: - University and Yale The technique of packaging an object's attributes into a cohesive unit that can be used as an undivided entity is ______________ . Answer Is: - encapsulation Which of the following languages is least similar to C#? Answer Is: - machine language A series of characters that appears within double quotation marks is a(n) ______________ Answer Is: - literal string The C# method that produces a line of output on the screen and then positions the cursor on the next line is ________________ . Answer Is: - WriteLine() Which of the following is a class? a. System b. Console c. void d. WriteLine() Answer Is: - b. Console In C#, a container that groups similar classes is a(n) ___________________ . Answer Is: - c. namespace Every method in C# contains a _________________________ . Answer Is: - header and a body Which of the following is a method? a. namespace b. class c. Main() d. static Answer Is: - c. Main() In C#, an identifier _________________________ . a. must begin with an underscore b. can contain digits c. must be no more than 16 characters d. can contain only lowercase letters Answer Is: - can contain digits Which of the following identifiers is not legal in C#? a. per cent increase b. annualReview c. HTML d. alternativetaxcredit Answer Is: - a. per cent increase The text of a program you write is called _________________________. Answer Is: - source code