Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

The constructor without parameter is called?

A. Method Constructor
B. Default Constructor
C. Operator Constructor
D. Function Constructor
Answer» C. Operator Constructor
Discussion
2.

________ is a default access specifier for members of structures in C++.

A. protected
B. public
C. private
D. default
Answer» C. private
Discussion
3.

________ is a default access specifier for members of class in C++.

A. protected
B. public
C. private
D. default
Answer» D. default
Discussion
4.

Observe the following code and chose the correct statement(s) class Name { const char *s ; . }; class Table { Name *p; size_t sz ; public : Table(size_ts = 15) {p = new Name [sz = s]; } ~Table() {delete [ ]p ;} Name * lookup(const char *); bool insert(Name *); };

A. ~Table() is a destructor
B. p is of Table type
C. Both A and B
D. insert() is a method which returns nothing
Answer» B. p is of Table type
Discussion
5.

The content of accumulator is 1000 0000 what will be its content after RR A instruction?

A. 0000 0001
B. 0000 0000
C. 0100 0000
D. 0000 0010
Answer» D. 0000 0010
Discussion
6.

Which is better computing time (in analysis of algorithm) ?

A. O(N)
B. O(2N)
C. O(log2 N)
D. O(N log2 N)
Answer» D. O(N log2 N)
Discussion
7.

Suppose in a microprocessor the instruction MVI A, 32H takes 2 machine cycles one is op code fetch which composed of 4 T-states and the other is memory read which takes n T-states. If the total time taken by the processor to execute the instruction is 1400 nano sec with an operating frequency of 5 MHz. What is the value of n?

A. 3
B. 4
C. 6
D. 5
Answer» B. 4
Discussion
8.

Analyse the following code snippet and choose the answer:- #include Class Temp { private: int m_ival; public: Temp() { Cout<<"OBJECT CREATED\n"< } ~Temp() { Cout<<"OBJECT DESTROYED\n"< } }; void fnRead() { Temp oTempObj; } int main() { fnRead(); cout<<"IN MAIN \n"< return 0; }

A. OBJECT CREATED OBJECT DESTROYED
B. OBJECT CREATED OBJECT DESTROYED IN MAIN
C. OBJECT CREATED IN MAIN
D. Compilation Error
Answer» C. OBJECT CREATED IN MAIN
Discussion
9.

Declare the following statement?"A pointer to a function which receives nothing and returns nothing".

A. void*(ptr)*int;
B. void *(*ptr)()
C. void *(*ptr)(*)
D. void (*ptr)()
Answer» E.
Discussion
10.

A collection of wires that connects several devices is called?

A. Link
B. Bus
C. Bi-directional
D. Cables
Answer» C. Bi-directional
Discussion
11.

A modem is connected in between a telephone line and a?

A. Network
B. Computer
C. Communicationadapter
D. Serial port
Answer» D. Serial port
Discussion
12.

What is the CCITT standard for a T3?

A. 2 multiplexedT1s
B. 4 MultiplexedT1s
C. 2 multiplexedT2s
D. 4 multiplexedT2s
Answer» E.
Discussion
13.

Java is designed for the distributed environment of the Internet,because it handles _______ protocols?

A. UDP
B. TCP/IP
C. FTP
D. TEL
Answer» C. FTP
Discussion
14.

Java is associated with _______ programming Language?

A. Oak
B. Basic
C. C
D. Perl
Answer» B. Basic
Discussion
15.

Java has the capability to handle?

A. InternetProtocol
B. Transmission
C. TCP
D. Above of these
Answer» E.
Discussion
16.

In Java 31%9 gives an answer?

A. 3
B. 4
C. 5
D. 6
Answer» C. 5
Discussion
17.

Find the keyword which is not used to implement exception?

A. try
B. catch
C. finally
D. access
Answer» E.
Discussion
18.

Feature of Java?

A. Robust andsecure
B. Simple andFamiliar
C. PlatformIndependence
D. All of theabove
Answer» E.
Discussion
19.

Each catch clause (exception handler) is like a little function thattakes a --------Argument`s of one particular type?

A. many
B. two
C. single
D. either A) or B)
Answer» D. either A) or B)
Discussion
20.

  Choose the proper operator precedence when evaluating anExpression 1. Comparisons 2. Logical operations 3. Increment 4.Arithmetic operations?

A. 1-2-4-3
B. 4-3-1-2
C. 2-1-4-3
D. 3-4-1-2
Answer» E.
Discussion
21.

The extension of C++ object code is __?

A. .obj
B. .cpp
C. .ppt
D. .xls
Answer» B. .cpp
Discussion
22.

The __ keyword/s do not apply to friend functions, as the class hasno controlover the scope of friends?

A. public
B. protected
C. private
D. both A) andB)
Answer» E.
Discussion
23.

__classes are used in cases where one class is tightly coupled toanother class?

A. Abstract
B. friend
C. static
D. virtual
Answer» C. static
Discussion
24.

__pointers are not modifiable?

A. that
B. this
C. Indirection
D. Address
Answer» C. Indirection
Discussion
25.

__C++ header file that handles input output functions is?

A. isotream.h
B. iomanip.h
C. string.h
D. fstream.h
Answer» B. iomanip.h
Discussion
26.

 __A class that declares or inherits a virtual function is called?

A. Encapsulationclass
B. inherited class
C. polymorphicclass
D. static class
Answer» D. static class
Discussion
27.

__feature in OOP allows reusing code?

A. Polymorphism
B. Inheritance
C. Encapsulation
D. Data hiding
Answer» C. Encapsulation
Discussion
28.

Header file C contain?

A. Compliercommand
B. Libraryfunctions
C. Headerinformation of cprograms
D. Operators forfiles
Answer» C. Headerinformation of cprograms
Discussion
29.

Which of the following is valid in c?

A. `a
B. `abc`
C. `a`
D. `abc`
Answer» D. `abc`
Discussion
30.

The continue command cannot be used with?

A. For
B. Switch
C. Do
D. While
Answer» C. Do
Discussion
31.

The number of relation operators in the C language is?

A. Four
B. Six
C. Three
D. Seven
Answer» C. Three
Discussion
32.

In the C language a represents?

A. A digit
B. An integer
C. A character
D. A word
Answer» D. A word
Discussion
33.

  Which of the following is a key word is used for a storage class?

A. Printf
B. External
C. Auto
D. Scanf
Answer» D. Scanf
Discussion
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