el7eetan: C#

الثلاثاء، 13 أغسطس 2013

Objective Questions of C# with Answer set-2

Objective Questions in C#

1. In C# variables are categorized into ..........

i) Value types    ii) Reference types    iii) initial types iv) pointer types

A) i, ii and iii only

B) ii, iii and iv only

C) i, ii and iv only

D) All i, ii, iii and iv

2. Value type variables can be assigned a value directly which are derived from the class

A) System.value

B) System.ValueType

C) General.ValueType

D) Variable.ValueType

3. The various data types used in C# are

i) Integral Type ii) Floating point types

iii) Boolean types iv) Nullable types

A) i, ii and iii only

B) ii, iii and iv only

C) i, iii and iv only

D) All i, ii, iii and iv

4. The built-in operators that are provided by C# programming language are...

i) Arithmetic operators    ii) Logical operators

iii) Bitwise operators iv) Assignment operators

A) i, ii and iii only

B) ii, iii and iv only

C) i, iii and iv only

D) All i, ii, iii and iv

5. Match the different Bitwise operators supported by C# with their descriptions.

i) &                   a) Binary Left Shift Operator

ii) ^ b) Binary Right Shift Operator

iii) << c) Binary XOR operator

iv) >>             d) Binary AND operator

A) i-d, ii-c, iii-a, iv-b

B) i-b, ii-c, iii-a, iv-d

C) i-c, ii-a, iii-b, iv-d

D) i-a, ii-c, iii-d, iv-b

6. What will be the value of the following expression if x=10?

A) 25

B) -5

C) 10

D) 15

7. While passing parameter to a method ................ copies the actual value of an argument into the formal parameter of the function.

A) Output Parameter

B) Value Parameter

C) Reference Parameter

D) Initial Parameter

8. In C# methods can be defined by using which of the following syntex?

A) <Method Name> (parameter list) { Method body }

B) <Method Name> <Return Type> <Access Specifier> (parameter list) { Method body }

C) <Return Type> <Method Name> <Access Specifier> (parameter list) { Method body }

D) None of the above

9. Which of the following are the methods to assign values to an array?

i) double [ ] score = {234.0, 214.5, 572.0};

ii) int [ ] marks = new int [3] {33, 45, 67};

iii) int [ ] marks = new int [ ] {33, 45, 67};

A) i and ii only

B) ii and iii only

C) i and iii only

D) All i, ii, iii

10. State whether the following statements are True or False.

i) Unlike classes, structures cannot inherit other structures or classes.

ii) A structure can implement one or more interfaces.

iii) Structure members can be specified as abstract, virtual or protected.

A) i- True, ii- False, iii-True

B) i- False, ii- True, iii-True

C) i-True, ii-True, iii-False

D) i- False, ii- False, iii-True

Answers:

1. C) i, ii and iv only

2. B) System.ValueType

3. D) All i, ii, iii and iv

4. D) All i, ii, iii and iv

5. A) i-d, ii-c, iii-a, iv-b

6. A) 25

7. B) Value Parameter

8. A)<Access Specifier><Return Type> <Method Name> (parameter list) {Method body}

9. D) All i, ii, iii

10. C) i-True, ii-True, iii-False

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الاثنين، 12 أغسطس 2013

Solved Objective Questions of C# set-1

1. Which of the following is not the component of .Net framework?

A) Common Language Run time(CLR)

B) .Net Framework Library.

C) Component Network

D) Windows Workflow Foundation (WF)

2. Following is/are the Integrated Development Environment (IDE) for C#.

A) Visual Studio 2010 (VS)

B) Visual Web Developer

C) Both A and B

Visual overview of the Common CLR Language Infrastructure, and how the components relate to each other. Converted to SVG from PNG version, originally by Foofy from English Wikipedia. (Photo credit: Wikipedia)

D) Only A

3. A C# program may consist of the following parts.

i) Namespace declaration

ii) Class methods

iii) A main method

iv) Statement & Expressions

A) i, ii and iii only

B) ii, iii and iv only

C) i, iii and iv only

D) All i, ii, iii and iv

4. State True or False for naming class in C#.

i) The class name can be a C# keyword.

ii) A name must begin with a letter, can be followed by letters, digits and underscore.

A) i- True, ii- False

B) i- False, ii- True

C) i-True, ii-True

D) i- False, ii- False

5. ...................... is a name which can be used to identify a class, variable, function etc.

A) Keyword

B) Reference

C) Identifier

D) Object

6. .................... conversions are performed by C# compiler itself and ..................... conversions are performed by users by using predefined functions.

A) Implicit type, Explicit type

B) Explicit type, Implicit type

C) External type, Internal type

D) Internal type, External type

7. A variable can be declared by using which of the following syntax?

A) <variable_list> <data_type>;

B) <variable_list>, <data_type>

C) <data_type> <variable_list>

D) <data_type> <variable_list>;

8. Match the following.

i) * a) returns the address of an variable

ii) ? : b) point to variable

iii) & c) conditional expression

A) i-a, ii-b, iii-c

B) i-b, ii-c, iii-a

C) i-c, ii-a, iii-b

D) i-a, ii-c, iii-b

9. C# supports the following types of access specifiers.

i) public ii) friend iii) private iv) protected v) internal

A) i, ii, iii and iv only

B) i, iii, iv and v only

C) i, ii, iv and v only

D) All i, ii, iii, iv and v

10. ........................ access specifier allows a class to expose it's member variables and member functions to other functions and objects in the current application.

A) Internal

B) Protected

C) Private

D) Public

Answers:

1. C) Component Network

2. C) Both A and B

3. D) All i, ii, iii and iv

4. B) i- False, ii- True

5. C) Identifier

6. A) Implicit type, Explicit type

7. D) <data_type> <variable_list>;

8. B) i-b, ii-c, iii-a

9. B) i, iii, iv and v only

10. A) Internal