Grade 12 Final Exam 2079: Visual Programming (C#) Practice Paper

1) What is the Common Language Runtime (CLR)?

1. A compiler for C#
2. An integratcd development environment
3. A virtual machine for executing .NET code
4. A database management system

2) Which of the following is the root of the hierarchy Of all .NET types?

1. System.Base
2. System.Object
3. Systcm.Parent
4. System.Root

3) What is the syntax for a for loop in C#?

1. for (initializer; condition; iterator) {// code block}
2. for (condition; initializer; iterator) {// code block}
3. for (condition; iterator; initializer) {// code block}
4. for (iterator; condition; initializer) {// code block}

4) How do you declare an array in C#?

1. int array = new int[];
2. int array = new array int[];
3. int array = new int();
4. int[] array = new int[];

5) Which of the following methods is used to convert a string to uppercase in C#?

1. ToUpper()
2. ToLower()
3. Replace()
4. Trim()

6) Which of the following is NOT a feature of a structure in C#?

1. Can implement interfaces
2. Cannot inherit from other structures or classes
3. Can have properties and methods
4. Can have a destructor

7) Which keyword is used to pass a pointer as a parameter by reference in C#?

1. var
2. ref
3. out
4. unsafe

8) Which namespace is used to connect to a database in C#?

1. System.Data.SqlClient
2. System.Data.OracIeCIient
3. System.Data.OleDb
4. All ofthe above

9) Which of the following statement is true for a Structure in C#?

1. It can hold similar data types only
2. It can hold dissimilar data type
3. It can hold integer only
4. All of above