ISTM Conceptual Exam 1

A desktop application runs

A desktop application runs

On the user's computer

Which of the following is not a platform that you can use to develop Windows desktop applications -WPF -UWP -Windows Forms -ASP.NET Core MVC

ASP.NET Core MVC

Which of the following is not a .NET Programming Language -Visual Basic -JavaScript -C# -F#

Javascript

Which of the following statements is true?

• .Net Core is newer than the .NET Framework, but it only runs on Windows

• .NET Core is newer than the .NET Framework, and it is cross-platform -.NET Core is older than the .NET Framework, and it only runs on Windows

• .NET Core is older than the .NET Framework, but it is cross platform.

.NET Core is newer than the .NET Framework, and it is cross-platform.

The primary components of .NET are its class libraries and its

Common Language Runtime

What is the purpose of the .NET class libraries?

They provide pre-written code that can be used by .NET applications.

What is the purpose of the Common Language Runtime? -It provides pre-written code that can be used by .NET applications. -It specifies the format of compiled .NET applications. -It manages the execution of .NET applications. -It specifies the data types that can be used by .NET applications.

It manages the execution of .NET applications.

Before a C# application can be run, it must be compiled into a language called

Microsoft Intermediate Language

An assembly is

an executable file that includes the MSIL or IL

A solution is

a container that holds projects

Which of the following is a way to open a form in the Form Designer window?

Find the form in the Solution Explorer and double-click on it.

To write the C# code for a form, you use a Visual Studio window called the

Code Editor

To work with the files of a solution, you use a Visual Studio window called the

Solution Explorer

A window that appears at the edge of the Visual Studio IDE is called a/an

docked window

Within Visual Studio, which window can you use to change the version of .NET that a project is targeting?

the Project Properties window

When you run a Windows Forms project, Visual Studio displays the project's first

form

To customize the way Visual Studio works, what command do you select from the Tools menu?

options

In Visual Studio, what command of the Tools menu can you use to change the development settings that affect the way the menus and toolbars work?

Import and Export Settings

To create a new Visual Studio project, what do you select from the New Project dialog box to specify the type of project you want to create?

a template

Which control do you use to allow a user to enter some text?

TextBox

Which property of a text box lets you prevent the user from entering data into the control?

ReadOnly

What is the name of the Visual Studio window that contains controls that you can drag onto a form?

toolbox

Two properties that are common to both forms and controls are the

Name and Text properties

Which key can a user press to activate the button that's set by the CancelButton property of a form?

Esc

What form property do you use to activate a button control when the user presses the Enter key?

AcceptButton property

The tab order determines the order in which

the controls on a form receive focus when the user presses the Tab key

To prevent a control from receiving the focus when the user presses the Tab key, which of the control's properties should you set to false?

TabStop

What property of a form sets the title that's displayed in the form's title bar?

Text

To create an access key that will move the focus to a text box, you

set the access key in the Text property of the label immediately before the text box

Access keys let the user activate a control by

pressing Alt plus another key

What would you set the Text property of a label to if you want the label to appear as shown below, with the letter n as the access key?

I&nvoice number

To change the filename for a form, project, or solution you use the

Solution Explorer

The Text property of a control determines

the text that's displayed in the control

When you run a form after you've used the Form Designer to design it but haven't added any code to it,

the buttons don't cause anything to happen, but otherwise the form works

To select two or more controls, you can

hold down either the Shift or Ctrl key while you click on them

To align two or more controls after you've selected them, you can use

both the Format menu commands and the Layout toolbar buttons

When you align or size a group of selected controls, the changes are made relative to the

primary control

an object is

an instance of a class

a class is

the code that defines the characteristics of an object

Instantiation is the process of generating

an object from a class

An operation that an object can perform is called

method

Which of the following is not defined by a class? methods properties notices events

notices

To refer to a property of an object in your C# code, you code the

object name followed by a period and the property name

What does the following code do? txtMonthlyInvestment.Focus();

calls the Focus() method of the txtMonthlyInvestment control

To say that a C# application is event-driven means that it responds to

user events and other types of events

What is the term for a method that responds to events?

event handler

What event does Visual Studio generate code for when you double-click a button in the Form Designer?

click

What is the name of the method generated if you double-click a button named btnProcess in the Form Designer?

btnProcess_Click

Blocks of code are enclosed in

braces - {}

C# statements must end with a

semicolon ;

A syntax error is identified in

the Code Editor window and the Error List window

Which of the following is not a recommended way to improve the readability of your C# code? Use blank lines before and after groups of related statements. Use all capital letters for variable names. Use indentation to align related elements of code. Use spaces to separate words, values, and operators.

Use all capital letters for variable names.

Which of the following is a valid comment?

\ This is a comment ' This is a comment / This is a comment // This is a comment

// This is a comment

Which of the following statements is true? You can't use C# keywords in a comment. Comments must appear at the beginning of a line. Comments can be inaccurate or out of date. Comments make the program run slower.

Comments can be inaccurate or out of date.

To insert the starting code for an if statement into the code for a form, you can use

a code snippet

To change the name of all occurrences of a variable name after you change the first occurrence, you can use

refactoring

When an application encounters a problem that prevents a statement from being executed,

a runtime error occurs

When you test an application, your goal is to

find runtime errors

What is another name for a runtime error?

exception

a data tip

displays the value of a variable or property

Which of the following choices adds a comment that says "currency format" to the end of the line of code? string amount = total.ToString("c"); ' currency format string amount = total.ToString("c"); -- currency format string amount = total.ToString("c"); # currency format string amount = total.ToString("c"); // currency format

string amount = total.ToString("c"); // currency format

Which of the following statements calls the Close() method of the current form? this.Close(); currentForm.Close(); currentForm.Close(this); currentForm.Call(Close);

this.Close();

Which built-in data type is the most precise type for storing monetary values?

decimal

The bool data type stores a

true or false value

Which built-in data type stores only whole numbers? whole float number int

int

A constant stores data

that does not change as a program executes

Which of the following is a valid decimal literal? 30.0 30.0c 30.0d 30.0m

30.0m

Variables named according to camel notation

capitalize the first letter of every word after the first word

Variables named according to Pascal notation

capitalize the first letter of every word including the first word

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17; What is the value of x after the following statement is executed? int x = i + j;

12

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17; What is the value of x after the following statement is executed? int x = j / i;

2

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17; What is the value of x after the following statement is executed? int x = i / j;

0

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17; What is the value of x after the following statement is executed? int x = k % j;

1

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17; What is the value of x after the following statement is executed? decimal x = a + b;

6.5

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17; What is the value of x after the following statements are executed? int x = 27; x -= i;

23

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m; int i = 4; int j = 8; int k = 17; What is the value of x after the following statement is executed? int x = k / (j - i);

4

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17;

What is the value of x after the following statement is executed? decimal x = i / j;

0.0

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17; What is the value of x after the following statement is executed? decimal x = (decimal)i / (decimal)j;

0.5

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17;

What is the value of x after the following statement is executed? decimal x = Math.Round(c)

13

Consider the following code: decimal a = 2.5m; decimal b = 4.0m; decimal c = 12.7m;

int i = 4; int j = 8; int k = 17; What is the value of x after the following statement is executed? int x = Math.pow(i, 2);

16

Given double variables a and b that contain the lengths of the two short sides of a right triangle, which of the following statements uses the methods of the Math class to calculate the length of the third side and save it in a double variable named c?The formula for calculating the length of the third side is: c = sqrt x^2 + c^2

double c = Math.Sqrt(Math.Pow(a, 2) + Math.Pow(b, 2));

Given the following Random object named number, which of the following choices gets a random integer from 1 to 10 (including both 1 and 10)? Random number = new Random();

int i = number.Next(10); int i = number.Next(11); int i = number.Next(1,10); int i = number.Next(1,11);

int i = number.Next(1,11);

Given the following Random object named number, which of the following statements returns a double value that is greater than or equal to 0.0 and less than 1.0? Random number = new Random();

double d = number.NextDouble(); double d = number.NextDouble(1.0); double d = number.Generate(); double d = number.Generate(1.0);

double d = number.NextDouble();

Which statement is equivalent to the following statement? total = total + tax;

total += tax;

To override the order of precedence in an arithmetic expression, you can use

parentheses