Which of the following statements are correct? An argument passed to a ref param

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Question
Which of the following statements are correct?
1. An argument passed to a ref parameter need not be initialized first.
2. Variables passed as out arguments need to be initialized prior to being passed.
3. Argument that uses params keyword must be the last argument of variable argument list of a method.
4. Pass by reference eliminates the overhead of copying large data items.
5. To use a ref parameter only the calling method must explicitly use the ref keyword.
Options
A. 1, 2
B. 2, 3
C. 3, 4
D. 4, 5
E. None of these

Correct Answer

3, 4

More questions

1. Which of the following assemblies can be stored in Global Assembly Cache?
Options
A. Private Assemblies
B. Friend Assemblies
C. Shared Assemblies
D. Public Assemblies
E. Protected Assemblies

2. Which of the following statements are correct?
1. A struct can contain properties.
2. A struct can contain constructors.
3. A struct can contain protected data members.
4. A struct cannot contain methods.
5. A struct cannot contain constants.
Options
A. 1, 2
B. 3, 4
C. 1, 2, 4
D. 3, 5

4. Which of the following statements are correct about inspecting an attribute in C#.NET?
1. An attribute can be inspected at link-time.
2. An attribute can be inspected at compile-time.
3. An attribute can be inspected at run-time.
4. An attribute can be inspected at design-time.
Options
A. 1, 2
B. 3, 4
C. 1, 3, 4
D. All of the above
E. None of the above

8. How many values is a function capable of returning?
Options
A. 1
B. 0
C. Depends upon how many params arguments does it use.
D. Any number of values.
E. Depends upon how many ref arguments does it use.

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