Technical Questions

Q:

What will be output when you will execute following c code?

#include <stdio.h>
void main()

{
    signed int a = -1;
    unsigned int b = -1u;
    if(a == b)
         printf( "The Lord of the Rings" );
    else
         printf( "American Beauty" );
}

A) The Lord of the Rings B) American Beauty
C) Compilation error: Cannot compare signed number with unsigned number D) Warning: Illegal operation
 
Answer & Explanation Answer: A) The Lord of the Rings

Explanation:
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6 10151
Q:

What will be output when you will execute following c code?

#include <stdio.h>
void main()

{
    int const SIZE = 5;
    int expr;
    double value[SIZE] = { 2.0, 4.0, 6.0, 8.0, 10.0 };
    expr=1|2|3|4;
    printf ( "%f", value[expr] );
}

A) 2.000000 B) 4.000000
C) 8.000000 D) Compilation error
 
Answer & Explanation Answer: D) Compilation error

Explanation:

Size of any array in c cannot be constantan variable.

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5 9844
Q:

Which is the simplest file structure?

A) Sequential B) Indexed
C) Random D) None
 
Answer & Explanation Answer: A) Sequential

Explanation:

Sequential is the simplest file structure

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Filed Under: Software Testing

5 9752
Q:

With this type of SQL Server cursor concurrency no lock is obtained until the user updates the data.

A) READ_ONLY B) SCROLL_LOCK
C) OPTIMISTIC D) PESSIMISTIC
 
Answer & Explanation Answer: C) OPTIMISTIC

Explanation:
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3 9402
Q:

What are the disadvantages of context switching?

Answer

Time taken for switching from one process to other is pure over head. Because the system does no useful work while switching. So one of the solutions is to go for threading when ever possible.

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20 9300
Q:

public abstract interface Frobnicate { public void twiddle(String s); } 

Which is a correct class?

A) public abstract class Frob implements Frobnicate { public abstract void twiddle(String s) { } } B) public abstract class Frob implements Frobnicate { }
C) public class Frob extends Frobnicate { public void twiddle(Integer i) { } } D) public class Frob implements Frobnicate { public void twiddle(Integer i) { } }
 
Answer & Explanation Answer: B) public abstract class Frob implements Frobnicate { }

Explanation:

B is correct, an abstract class need not implement any or all of an interface’s methods

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1 9254
Q:

Which of the following statement is true?

A) Cohesion is the OO principle most closely associated with hiding implementation details B) Cohesion is the OO principle most closely associated with making sure that classes know about other classes only through their APIs
C) Cohesion is the OO principle most closely associated with making sure that a class is designed with a single, well-focused purpose D) None
 
Answer & Explanation Answer: C) Cohesion is the OO principle most closely associated with making sure that a class is designed with a single, well-focused purpose

Explanation:

A refers to encapsulation, B refers to coupling

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3 8918
Q:

What are the notations used in Evaluation of Arithmetic Expressions using prefix and postfix forms?

A) Polish B) Reverse Polish
C) Both A and B D) None of the above
 
Answer & Explanation Answer: C) Both A and B

Explanation:

Polish and Reverse Polish are the notations used in Evaluation of Arithmetic Expressions using prefix and postfix forms

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Filed Under: Database
Job Role: Database Administration

8 8778