TATA ELXSI Previous Years Solved Sample Placement Papers

1. Does C# support pointers?

   A: Yes

   B: No

   Ans: A

   Explanation:

   Yes, C# supports pointers to a limited extent.

2. A C# pointer is used to store the ___ of another type.

   A: Value

   B: Memory address

   C: Size of the type

   D: Reference of the variable

   Ans: B

   Explanation:

   A C# pointer is used to store the memory address of another type.

3. C# pointers can only be declared to hold the memory address of ___.

   A: value types and arrays

   B: reference types

   C: pointer types

   D: reference and pointer types

   Ans: A

   Explanation:

   C# pointers can only be declared to hold the memory address of value types and arrays. Unlike reference types, pointer types are not tracked by the garbage collection mechanism.

4. How many catch blocks can be used with a single try block in C#?

   A: One

   B: Two

   C: Many

   D: None of the above

   Ans: C

   Explanation:

   In C#, there can be multiple (many) catch blocks with a single try block.

5. Is the use of a return statement necessary in every function in C#?

   A: Yes

   B: No

   Ans: A

   Explanation:

   Yes, the use of a return statement is necessary in every function in C#.

6. Which access specifier should be used for the Main() method in C#?

   A: private

   B: public

   C: protected

   D: internal

   Ans: B

   Explanation:

   The C# Main() method should be defined as public because it is called by runtime. By default, the Main() method is private.

7. In C#, a namespace is a collection of classes?

   A: True

   B: False

   Ans: A

   Explanation:

   Yes, a namespace is a collection of classes.

8. Which of the following is NOT a part of the JRE?

   a) Bytecode verifier

   b) Classloader

   c) Java Compiler

   d) Java API classes

   Ans: c) Java Compiler

9. What is the primary function of JRE?

   a) Compilation

   b) Debugging

   c) Execution

   d) Development

   Ans: c) Execution

10. Can you run a Java program without JRE?

    a) Yes

    b) No

    Ans: b) No

11. Is JVM platform-independent?

    a) Yes

    b) No

    Ans: a) Yes

12. Which operator is used to perform bitwise "AND" operation?

    a) &&

    b) &

    c) |

    d) ||

    Ans: b) &

13. What does the == operator compare in Java objects?

    a) Values

    b) References

    c) Hash codes

    d) Fields

    Ans: b) References

14. Which operator is used for logical "AND" operation?

    a) &&

    b) &

    c) ||

    d) |

    Ans: a) &&

15. Which of the following is a unary operator?

    a) +

    b) -

    c) !

    d) All of the above

    Ans: d) All of the above

16. Which operator has the highest precedence?

    a) +

    b) *

    c) ()

    d) &&

    Ans: c) ()