TATA ELXSI Previous Years Solved Sample Placement Papers

1. Which of the following is responsible for converting bytecode into machine code?

   a) JDK

   b) JRE

   c) JVM

   d) Java Compiler

   Ans: c) JVM

2. What does JDK include?

   a) Only a compiler

   b) Only a runtime environment

   c) Both a compiler and a runtime environment

   d) None of the above

   Ans: c) Both a compiler and a runtime environment

3. What is the purpose of the continue statement in a loop?

   a) To exit the loop immediately

   b) To skip the current iteration and move to the next iteration

   c) To terminate the program

   d) To execute a specific block of code

   Ans: b) To skip the current iteration and move to the next iteration

4. Which loop construct in Java is best suited when the number of iterations is unknown?

   a) for loop

   b) while loop

   c) do-while loop

   d) none

   Ans: b) while loop

5. What will be the output of the following C# code?

   using System;
   
   namespace MyApplication {
     class Program {
       static void Main(string[] args) {
         string[] mobiles = { "iPhone", "Samsung", "Vivo"};
         Console.WriteLine(mobiles);
       }
     }
   }
       

   A: "iPhone", "Samsung", "Vivo"

   B: {"iPhone", "Samsung", "Vivo"}

   C: string[]

   D: System.String[]

   Ans: D

   Explanation:

   In the above code, the statement Console.WriteLine(mobiles); will print the type of the variable that is System.String[].

6. What will be the output of the following C# code?

   using System;
   
   namespace MyApplication {
     class Program {
       static void Main(string[] args) {
         string[] mobiles = {"iPhone", "Samsung", "Vivo"};
         Console.WriteLine(mobiles[-1]);
       }
     }
   }
       

   A: None

   B: Warning

   C: Exception

   D: System.String[]

   Ans: C

   Explanation:

   The array index starts from 0 in C#. In the above code, we are trying to access an element with index -1, resulting in an exception: System.IndexOutOfRangeException.

7. Which statement is correct about the following C# statement?

   int[] x = {10, 20, 30};

   A: 'x' is a reference to the array created on stack

   B: 'x' is a reference to an object created on stack

   C: 'x' is a reference to an object of a 'System.Array' class

   D: None of the above

   Ans: C

   Explanation:

   In the above given C# statement, the variable x is a reference to an object of a System.Array class.

8. Which array property is used to get the total number of elements in C#?

   A: Len

   B: Length

   C: Elements

   D: MaxLen

   Ans: B

   Explanation:

   The Length property is used to get the total number of elements in C#.