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.NET Programming Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) , Bachelor of Computer Applications (BCA) , Programming Languages .

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1.

A variable which is declared inside a method is called a________variable

A. Serial
B. Local
C. Private
D. Static
Answer» B. Local
discuss (1)
2.

Which is the String method used to compare two strings with each other ?

A. Compare To()
B. Compare()
C. Copy()
D. ConCat()
Answer» B. Compare()
discuss
3.

Minimum and Maximum range of values supported by ‘float’ data type are ?

A. 1.5 * 10 ^-40 to 3.4 * 10 ^38
B. 1.5 * 10 ^-45 to 3.4 * 10 ^30
C. 1.5 * 10 ^-45 to 3.4 * 10 ^38
D. 1.5 * 10 ^-45 to 3.4 * 10 ^37
Answer» C. 1.5 * 10 ^-45 to 3.4 * 10 ^38
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4.

Which datatype should be more preferred for storing a simple number like 35 to improve execution speed of a program?

A. sbyte
B. short
C. int
D. long
Answer» A. sbyte
discuss
5.

What will be output of the following conversion ?
static void Main(string[] args)
{
char a = 'A';
string b = "a";
Console.WriteLine(Convert.ToInt32(a));
Console.WriteLine(Convert.ToInt32(Convert.Tochar(b)));
Console.ReadLine();
}
A. 1, 97
B. 65, 97
C. 65, 97
D. 97, 1
Answer» C. 65, 97
discuss
6.

Scope of variable is related to definition of variable as:
1. Region of code within which variable value is valid and hence can be accessed.
2. No, relation with region where variable is declared its value is valid in entire scope.
A. a
B. b
C. a, b
D. None of the mentioned
Answer» A. a
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7.

Type of Conversion in which compiler is unable to convert the datatype implicitly is ?

A. ushort to long
B. int to uint
C. ushort to long
D. byte to decimal
Answer» B. int to uint
discuss
8.

Select output of the given set of Code :
static void Main(string[] args)
{
String name = "Dr.Gupta";
Console.WriteLine("Good Morning" + name);
}
A. Dr.Gupta
B. Good Morning
C. Good Morning Dr.Gupta
D. Good Morning name
Answer» C. Good Morning Dr.Gupta
discuss
9.

Which of the following is an 8-byte Integer?

A. Char
B. Long
C. Short
D. Byte
Answer» B. Long
discuss
10.

Which of the following is NOT an Integer?

A. Char
B. Byte
C. Integer
D. Short
Answer» A. Char
discuss
11.

Which of the following are value types?
1.Integer
2.Array
3.Single
4.String
5.Long
A. 1, 2, 5
B. 1, 3, 5
C. 2, 4
D. 3, 5
Answer» B. 1, 3, 5
discuss
12.

Which of the following does not store a sign?

A. Short
B. Integer
C. Long
D. Byte
Answer» D. Byte
discuss
13.

What is the size of a Decimal?

A. 4 byte
B. 8 byte
C. 16 byte
D. 32 byte
Answer» C. 16 byte
discuss
14.

Which of the following is the correct size of a Decimal datatype?

A. 8 Bytes
B. 4 Bytes
C. 10 Bytes
D. 16 Bytes
Answer» D. 16 Bytes
discuss
15.

Which of the following statements is correct?

A. When a class inherits an interface it inherits member definitions as well as its implementations.
B. An interface cannot contain the signature of an indexer.
C. Interfaces members are automatically public.
D. To implement an interface member, the corresponding member in the class must be public as well as static.
Answer» C. Interfaces members are automatically public.
discuss
16.

Which of the following can implement an interface?
1.Data
2.Class
3.Enum
4.Structure
5.Namespace
A. 1, 3
B. 2, 4
C. 3, 5
D. 4 only
Answer» B. 2, 4
discuss
17.

Which of the following will be the correct output for the C#.NET code snippet given below?
String s1 = "ALL MEN ARE CREATED EQUAL";
String s2;
s2 = s1.Substring(12, 3);
Console.WriteLine(s2);
A. ARE
B. CRE
C. CR
D. REA
Answer» B. CRE
discuss
18.

If s1 and s2 are references to two strings, then which of the following is the correct way to compare the two references?

A. s1 is s2
B. s1 = s2
C. s1.Equals(s2)
D. strcmp(s1, s2)
Answer» C. s1.Equals(s2)
discuss
19.

Which of the following is the correct output of the C#.NET code snippet given below?
int[ , , ] a = new int[ 3, 2, 3 ];
Console.WriteLine(a.Length);
A. 20
B. 4
C. 18
D. 10
Answer» C. 18
discuss
20.

Which of the following are NOT Relational operators in C#.NET?
1.>=
2.!=
3.Not
4.<=
5.<>=
A. 1, 3
B. 2, 4
C. 3, 5
D. 4, 5
Answer» C. 3, 5
discuss
21.

Which of the following is NOT an Assignment operator in C#.NET?

A. \=
B. /=
C. *=
D. +=
Answer» A. \=
discuss
22.

A GUI:

A. uses buttons, menus, and icons.
B. should be easy for a user to manipulate.
C. stands for Graphic Use Interaction.
D. Both a and b.
Answer» D. Both a and b.
discuss
23.

Visual Studio .NET provides which feature:

A. debugging.
B. application deployment.
C. syntax checking.
D. All of the above..
Answer» D. All of the above..
discuss
24.

What does IDE stand for?

A. Integrated Development Environment
B. Integrated Design Environment
C. Interior Development Environment
D. Interior Design Environment
Answer» A. Integrated Development Environment
discuss
25.

Which is not a main component of the Visual Studio IDE?

A. Solution Explorer
B. Tool Box
C. Start Menu
D. Designer Window
Answer» C. Start Menu
discuss
26.

Which does the solution explorer not display?

A. Form Properties
B. Reference Folder
C. Form File
D. Assemble File
Answer» A. Form Properties
discuss
27.

The Button control can be activated:

A. programmatically through the click event.
B. by clicking the button with the mouse.
C. with the form’s DefaultButton property.
D. Both a and b.
Answer» D. Both a and b.
discuss
28.

Which sequence of char data types is listed from lowest to highest?

A. a, A, z, Z
B. a, z, A, Z
C. A, a, Z, z
D. A, Z, a, z
Answer» D. A, Z, a, z
discuss
29.

The Boolean data type:

A. is unsigned.
B. has two states.
C. is displayed by the program as yes or no.
D. Both a and b.
Answer» D. Both a and b.
discuss
30.

VB.Net identifiers:

A. are case sensitive.
B. can begin with an underscore.
C. can begin with a number.
D. Both a and b.
Answer» B. can begin with an underscore.
discuss
31.

The proper operator precedence, from first to last, is:

A. logical, comparison, and arithmetic.
B. arithmetic, comparison, and logical.
C. arithmetic, logical, and comparison.
D. comparison, arithmetic, and logical.
Answer» B. arithmetic, comparison, and logical.
discuss
32.

With A = False and B = True, which statement evaluates as True?

A. A AND A
B. A AND B
C. B AND A
D. B AND B
Answer» D. B AND B
discuss
33.

Which operator is evaluated first?

A. NOT
B. AND
C. XOR
D. OR
Answer» A. NOT
discuss
34.

In the For…Next statement the default value for the Step is:

A. -1
B. 0
C. 1
D. 2
Answer» C. 1
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35.

Which is a type of procedure found in VB.Net?

A. Event
B. Function
C. Sub
D. All of the above.
Answer» D. All of the above.
discuss
36.

A sub procedure is valuable because it:

A. makes code easier to maintain.
B. splits the logic to solve a problem into small, manageable units.
C. limits the number of times the code can be accessed.
D. Both a and b.
Answer» D. Both a and b.
discuss
37.

Which method will return the number of elements in an array?

A. Dimension
B. Length
C. Number
D. Size
Answer» B. Length
discuss
38.

What is required to reference an element in an array?

A. Array name
B. Index value of the element
C. Element value
D. Both a and b.
Answer» D. Both a and b.
discuss
39.

Which method will arrange the elements of an array in alphabetical order?

A. Arrange
B. Assemble
C. Order
D. Sort
Answer» D. Sort
discuss
40.

Which dialog control allows the user to zoom in on a document?

A. PrintDialog
B. PrintPreview
C. PageSetupDialog
D. Both a and b.
Answer» B. PrintPreview
discuss
41.

Which is not an ADO.NET DataAdapter Object?

A. OleDbDataAdapter
B. SQLDataAdapter
C. QueryDataAdapter
D. Both a and b.
Answer» C. QueryDataAdapter
discuss
42.

Where does a web application reside?

A. Web client
B. Web server
C. Visual Studio .NET
D. Both a and b.
Answer» B. Web server
discuss
43.

Which is an example of a web document?

A. Server script
B. Web page
C. Client browser
D. Both a and b.
Answer» D. Both a and b.
discuss
44.

A postback occurs when:

A. a browser posts a form to the server.
B. a user’s action activates the handing of a server event.
C. a server posts a form to the client.
D. Both a and b.
Answer» D. Both a and b.
discuss
45.

Which set of symbols are used to signify the presence of ASP.NET code?

A. <@
B. <#
C. <$
D. <%
Answer» D. <%
discuss
46.

Which is the file extension used for an ASP.NET file?

A. asn
B. asp
C. aspn
D. aspx
Answer» D. aspx
discuss
47.

What is the extension for a Visual Basic web form interface file?

A. .asp
B. .aspx
C. .asp.vb
D. .aspx.vb
Answer» B. .aspx
discuss
48.

When an ASP.NET file is placed on an IIS server and viewed through a browser, the resulting HTML page contains:

A. all ASP.NET code.
B. as much ASP.NET code as is in the ASP.NET file.
C. a mix of ASP.NET and HTML code.
D. all HTML code.
Answer» D. all HTML code.
discuss
49.

What is the extension for a Visual Basic web form code file?

A. .asp
B. .aspx
C. .asp.vb
D. .aspx.vb
Answer» D. .aspx.vb
discuss
50.

Which HTML tag creates a link to another browser page?

A. A href
B. A ref
C. An href
D. An ref
Answer» A. A href
discuss

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