24 + Mcqs in Technical/Interview

1.	In PHP 5, how can you write a class so that some of its properties cannot be accessed from outside its methods?
A.	By declaring the class as private
B.	By declaring the property as private
C.	It cannot be done
D.	By writing a property overloading method
Answer» C. It cannot be done

Discussion

2.	Which object-oriented pattern would you use to implement a class that must be instantiated only once for the entire lifespan of a script?
A.	Model-view-controller
B.	Abstract factory
C.	Singleton
D.	Proxy
Answer» D. Proxy

Discussion

3.	What is the name of function used to convert an array into a string?
A.	explode()
B.	glue()
C.	implode()
D.	None of the above
Answer» D. None of the above

Discussion

4.	How many type of Primitive Data Types exist in Java?
A.	5
B.	7
C.	8
D.	10
Answer» D. 10

Discussion

5.	Which method of System class is used to copy array?
A.	copyArray
B.	arrayCopy
C.	arraycopy
D.	arrCopy
Answer» D. arrCopy

Discussion

6.	Which keyword is used to inherit class?
A.	inherit
B.	extends
C.	inheritance
D.	extend
Answer» C. inheritance

Discussion

7.	In how many ways is polymorphism achived in C++?
A.	2
B.	3
C.	1
D.	4
Answer» C. 1

Discussion

8.	Data members is also called?
A.	Attribute
B.	Method
C.	Class
D.	Object
Answer» B. Method

Discussion

9.	The parameter list in function overloading must differ by?
A.	Number of functions
B.	Function Size
C.	Function Name
D.	Number of argument
Answer» E.

Discussion

10.	Which of the following data structure is linear type?
A.	Strings
B.	Queue
C.	Lists
D.	All of the above
Answer» E.

Discussion

11.	What will be the output of the following C code? #include <stdio.h> void main() { register int x = 5; m(); printf("x is %d", x); } void m() { x++; }
A.	6
B.	5
C.	Junk value
D.	Compile time error
Answer» E.

Discussion

12.	Which among the following is wrong for “register int a;”?
A.	Compiler generally ignores the request
B.	You cannot take the address of this variable
C.	Access time to a is critical
D.	None of the mentioned
Answer» E.

Discussion

13.	Register storage class can be specified to global variables.
A.	True
B.	False
C.	Depends on the compiler
D.	Depends on the standard
Answer» C. Depends on the compiler

Discussion

14.	What will be the output of the following C code? #include <stdio.h> int main() { register const int i = 10; i = 11; printf("%d\n", i); }
A.	10
B.	Compile time error
C.	Undefined behaviour
D.	11
Answer» C. Undefined behaviour

Discussion

15.	What will be the output of the following C code? #include <stdio.h> int main() { register auto int i = 10; i = 11; printf("%d\n", i); }
A.	10
B.	Compile time error
C.	Undefined behaviour
D.	11
Answer» C. Undefined behaviour

Discussion

16.	What will be the output of the following C code? #include <stdio.h> int main() { register static int i = 10; i = 11; printf("%d\n", i); }
A.	10
B.	Compile time error
C.	Undefined behaviour
D.	11
Answer» C. Undefined behaviour

Discussion

17.	register keyword mandates compiler to place it in machine register.
A.	True
B.	False
C.	Depends on the standard
D.	None of the mentioned
Answer» C. Depends on the standard

Discussion

18.	What will be the output of the following C code? #include <stdio.h> int main() { register int i = 10; int p = &i; p = 11; printf("%d %d\n", i, *p); }
A.	Depends on whether i is actually stored in machine register
B.	10 10
C.	11 11
D.	Compile time error
Answer» E.

Discussion

19.	int * ptr=(int *) realloc(NULL,100) is same as
A.	int ptr=(int ) malloc(20)
B.	int ptr=(int ) malloc(50)
C.	int ptr=(int ) calloc(25,4)
D.	int ptr=(int ) calloc(20,4)
Answer» D. int ptr=(int ) calloc(20,4)

Discussion

20.	output of following program #include<stdio.h> int f1( int ); void main() { int b=5; printf("%d,%d", f1(b),f1(b)); } int f1(int b) { static int n=5; n++; return n; }
A.	6,6
B.	6,7
C.	7,6
D.	5,6
Answer» D. 5,6

Discussion

21.	The effectiveness of an algorithm is best stated in
A.	Best-case Time
B.	Average-case Time
C.	Worst-Case running time
D.	Industry-Standard Time
Answer» D. Industry-Standard Time

Discussion

22.	Big O notation is defined for
A.	Time and Space Complexity
B.	Optimality
C.	Searching
D.	Sorting
Answer» B. Optimality

Discussion

23.	Iterators are________________
A.	Generalised pointers in STL
B.	Container classes in STL
C.	Algorithms in STL
D.	Special Methods in STL
Answer» B. Container classes in STL

Discussion

24.	What happens when the following piece of code in file1.c, is compiled and executed? namespace { Class Temp { public: int GetVal() { return 100; } }; } //end of namespace int main() { Temp oTempObj1; Cout< }
A.	Compile Error
B.	100
C.	Runtime Error
D.	Compilation Error
Answer» C. Runtime Error

Discussion

Explore topic-wise MCQs in Testing Subject.

In PHP 5, how can you write a class so that some of its properties cannot be accessed from outside its methods?

Which object-oriented pattern would you use to implement a class that must be instantiated only once for the entire lifespan of a script?

What is the name of function used to convert an array into a string?

How many type of Primitive Data Types exist in Java?

Which method of System class is used to copy array?

Which keyword is used to inherit class?

In how many ways is polymorphism achived in C++?

Data members is also called?

The parameter list in function overloading must differ by?

Which of the following data structure is linear type?

What will be the output of the following C code? #include &lt;stdio.h&gt; void main() { register int x = 5; m(); printf(&quot;x is %d&quot;, x); } void m() { x++; }

Which among the following is wrong for &ldquo;register int a;&rdquo;?

Register storage class can be specified to global variables.

What will be the output of the following C code? #include &lt;stdio.h&gt; int main() { register const int i = 10; i = 11; printf(&quot;%d\n&quot;, i); }

What will be the output of the following C code? #include &lt;stdio.h&gt; int main() { register auto int i = 10; i = 11; printf(&quot;%d\n&quot;, i); }

What will be the output of the following C code? #include &lt;stdio.h&gt; int main() { register static int i = 10; i = 11; printf(&quot;%d\n&quot;, i); }

&nbsp;register keyword mandates compiler to place it in machine register.

What will be the output of the following C code? #include &lt;stdio.h&gt; int main() { register int i = 10; int *p = &amp;i; *p = 11; printf(&quot;%d %d\n&quot;, i, *p); }

int * ptr=(int *) realloc(NULL,100) is same as

output of following program #include&lt;stdio.h&gt; int f1( int ); void main() { int b=5; printf(&quot;%d,%d&quot;, f1(b),f1(b)); } int f1(int b) { static int n=5; n++; return n; }

The effectiveness of an algorithm is best stated in

Big O notation is defined for

Iterators are________________

What happens when the following piece of code in file1.c, is compiled and executed? namespace { Class Temp { public: int GetVal() { return 100; } }; } //end of namespace int main() { Temp oTempObj1; Cout&lt;&nbsp;}

What will be the output of the following C code? #include <stdio.h> void main() { register int x = 5; m(); printf("x is %d", x); } void m() { x++; }

Which among the following is wrong for “register int a;”?

What will be the output of the following C code? #include <stdio.h> int main() { register const int i = 10; i = 11; printf("%d\n", i); }

What will be the output of the following C code? #include <stdio.h> int main() { register auto int i = 10; i = 11; printf("%d\n", i); }

What will be the output of the following C code? #include <stdio.h> int main() { register static int i = 10; i = 11; printf("%d\n", i); }

register keyword mandates compiler to place it in machine register.

What will be the output of the following C code? #include <stdio.h> int main() { register int i = 10; int p = &i; p = 11; printf("%d %d\n", i, *p); }

output of following program #include<stdio.h> int f1( int ); void main() { int b=5; printf("%d,%d", f1(b),f1(b)); } int f1(int b) { static int n=5; n++; return n; }

What happens when the following piece of code in file1.c, is compiled and executed? namespace { Class Temp { public: int GetVal() { return 100; } }; } //end of namespace int main() { Temp oTempObj1; Cout< }