Question 1

A variable which is declared inside a method is called a________variable
A)Serial
B)Local
C)Private
D)Static

Accepted Answer

Local variables are declared inside a method and their scope is limited to that method itself. They cannot be accessed outside the method in which they are declared.

Question 2

Which is the String method used to compare two strings with each other ?
A)Compare To()
B)Compare()
C)Copy()
D)ConCat()

Accepted Answer

B

Question 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

Accepted Answer

The 'float' data type in programming (specifically in languages like Java and C) supports a range of values from 1.5 * 10^-45 to 3.4 * 10^38, making option C correct.

Question 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

Accepted Answer

The `sbyte` data type is preferred for storing a simple number like 35 when the goal is to improve execution speed, as it occupies less memory (8 bits) compared to `short` (16 bits), `int` (32 bits), and `long` (64 bits), potentially leading to faster access and processing times.

Question 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

Accepted Answer

The answer of What will be output of the following...

Question 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

Accepted Answer

1) The scope of a variable indeed refers to the region of the code within which the variable's value is valid and can be accessed. This means that outside of this region, the variable is either not known or not accessible in the same way.

Question 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

Accepted Answer

Implicit conversion from 'int' to 'uint' is not possible because 'int' can contain negative values, which cannot be represented in 'uint'. The other options involve widening conversions, which can be done implicitly.

Question 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

Accepted Answer

The code concatenates "Good Morning" with the value of the variable `name` ("Dr.Gupta"), resulting in the output "Good Morning Dr.Gupta".

Question 9

Which of the following is an 8-byte Integer?
A)Char
B)Long
C)Short
D)Byte

Accepted Answer

Long data type in many programming languages, including Java and C#, is typically used to represent a 64-bit integer, which occupies 8 bytes of memory.

Question 10

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

Accepted Answer

1 (Integer), 3 (Single), and 5 (Long) are value types in programming languages like C# and VB.NET, which store data directly in their own memory space. Arrays and Strings are reference types, which store references to their data.

Question 11

Which of the following does not store a sign?
A)Short
B)Integer
C)Long
D)Byte

Accepted Answer

Short, Integer, and Long are data types that can represent both positive and negative values, indicating they store a sign. Byte, in many contexts, especially in lower-level programming, is often used to represent a collection of 8 bits without inherently storing a sign, making it the correct choice. However, it's worth noting that in some high-level programming languages, "byte" types can be signed or unsigned based on the language specification.

Question 12

What is the size of a Decimal?
A)4 byte
B)8 byte
C)16 byte
D)32 byte

Accepted Answer

The size of a Decimal in .NET is 16 bytes. This allows it to store very large numbers with high precision, making it suitable for financial and monetary calculations.

Question 13

Which of the following is the correct size of a Decimal datatype?
A)8 Bytes
B)4 Bytes
C)10 Bytes
D)16 Bytes

Accepted Answer

The Decimal datatype in .NET is a 128-bit data type, which equates to 16 bytes. This allows it to represent very large or very precise decimal numbers.

Question 14

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.

Accepted Answer

Interfaces in C# and many other programming languages define a contract that a class or a struct must adhere to. The members of an interface are automatically public because the purpose of an interface is to define a public set of operations or properties that implementing types must provide. Interfaces themselves do not provide implementations for these members; they only declare their signatures. Therefore, when a class implements an interface, it must provide the implementation for all the members declared by the interface, and these implemented members must be public to adhere to the interface's contract.

Question 15

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

Accepted Answer

Classes and structures can implement interfaces, allowing them to define specific behaviors in a consistent manner. Enums and namespaces cannot implement interfaces, and "Data" is not a specific type that can implement an interface in programming languages like C# or Java.

Question 16

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

Accepted Answer

The Length property of an array in C# returns the total number of elements in all the dimensions of the array. Here, the array is declared with dimensions [3, 2, 3], so the total number of elements is 3*2*3 = 18.

Question 17

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

Accepted Answer

Relational operators in C# include >=, !=, <=, which are used to compare two values. "Not" and "<>=" are not valid relational operators in C#. "<>=" is not a recognized operator in C#, and "Not" is used in other languages or contexts for logical negation, not as a relational operator.

Question 18

Which of the following is NOT an Assignment operator in C#.NET?
A)\=
B)/=
C)*=
D)+=

Accepted Answer

The correct symbol for the assignment operator in C# is "=", not "\=". The other options "/=", "*=", and "+=" are compound assignment operators that combine arithmetic operations with assignment.

Question 19

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.

Accepted Answer

A GUI, or Graphical User Interface, indeed uses buttons, menus, and icons (A) and should be designed to be easy for a user to manipulate (B). The correct acronym for GUI is Graphical User Interface, not Graphic Use Interaction, making C incorrect.

Question 20

Visual Studio .NET provides which feature:
A)debugging.
B)application deployment.
C)syntax checking.
D)All of the above..

Accepted Answer

Visual Studio .NET provides debugging, application deployment, and syntax checking, making "All of the above" the correct choice.

Quiz 1: C# Programming Language and Visual Studio IDE

A variable which is declared inside a method is called a________variable

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

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

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

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() ; }

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.

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

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

Which of the following is an 8-byte Integer?

Which of the following are value types? 1) Integer 2) Array 3) Single 4) String 5) Long

Which of the following does not store a sign?

What is the size of a Decimal?

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

Which of the following statements is correct?

Which of the following can implement an interface? 1) Data 2) Class 3) Enum 4) Structure 5) Namespace

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) ;

Which of the following are NOT Relational operators in C#.NET? 1) >= 2) != 3) Not 4) <= 5) <>=

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

A GUI:

Visual Studio .NET provides which feature: