Latest notices:

NEC licence exam preparation, made clearer.Practice questions, syllabus guides, and timed mocks for Nepal engineers.New study resources are added regularly.

Login Sign up

Syllabus

NEC Electronics · Practice

Chapters & sets

1. Basic Electrical and Electronics Engineering

Basic Electrical

Set 1106

Basic Electronics

Set 171 Set 233

2. Digital Logic and Microprocessor

Digital Logic

Set 150 Set 250 Set 350 Set 450 Set 550 Set 650 Set 749 Set 851 Set 950 Set 1050 Set 1150 Set 1232

Microprocessor

Set 150 Set 250 Set 350 Set 445 Set 550 Set 650 Set 720 Set 850 Set 969

3. Programming Language and Its Applications

Mixed chapter MCQs

Set 150 Set 249 Set 349 Set 451 Set 540

4. Computer Organization and Embedded Systems

Mixed chapter MCQs

Set 150 Set 249 Set 350 Set 450 Set 550 Set 650 Set 750 Set 849 Set 950 Set 1050 Set 1150

5. Computer Networks and Network Security

Basic Networking

Set 150 Set 253

Advanced Networking

Set 150 Set 250 Set 350 Set 450 Set 550 Set 655

10. Project Planning, Design and Implementation

Mixed chapter MCQs Set 3

49 questions

Question 1

Why do we use a destructor in C++?

A.
To destroy an object when the lifetime of the object ends
B.
To create an object when the object needs to be created
C.
To initialize the data members of an object when it is created
D.
None of the Above

2

A destructor is preceded by:

A.
/
B.
|
C.
?
D.
\~

Question 3

Which of the following statements is correct?

A.
A constructor has the same name as that of the class
B.
A destructor has the same name as that of the class with a tilde symbol at the beginning.
C.
A constructor is a member function of the class
D.
All of the Above

Question 4

When an object goes out of scope, which of the following gets called?

A.
Constructor
B.
Destructor
C.
Main
D.
Void

Question 5

Which of the following can be declared as virtual?

A.
Destructor
B.
Constructor
C.
Data Members
D.
All of the Above

Question 6

The constructor that either has no parameters, or if it has parameters, all the parameters have default values:

A.
Default
B.
Copy
C.
Parameterized
D.
Friend function

Question 7

Per class, how many default constructors are possible?

A.
1
B.
2
C.
3
D.
4

Question 8

A destructor takes how many arguments?

A.
0
B.
1
C.
2
D.
3

Question 9

How many times is a constructor called in the lifetime of an object?

A.
Only once
B.
3
C.
2
D.
None of the Above

Question 10

The area where the local variables are stored is called:

A.
Heap
B.
Stack
C.
Free Memory
D.
Cache

Question 11

What is the return type of malloc()?

A.
Char\*
B.
Int \*
C.
Void \*
D.
Void \*\*

Question 12

Which of the following obtains a block of memory dynamically?

A.
Malloc
B.
Calloc
C.
Free
D.
Both A & B

Question 13

Which of the following operators is used to release the dynamically allocated memory in C++?

A.
New
B.
Delete
C.
Free
D.
Remove

Question 14

Which of the following is used to free the allocated memory for an object in C++?

A.
Free
B.
Delete
C.
Release
D.
Either delete or free

Question 15

Which of the following is correct?

A.
The 'this' pointer is accessible within all the member functions of the class
B.
The 'this' pointer is accessible only within functions returning void
C.
The 'this' pointer is accessible only within non-static functions
D.
The 'this' pointer is accessible within the member functions with zero arguments

Question 16

The 'this' pointer can be used to:

A.
Guard against any kind of reference
B.
Guard against self-reference
C.
Guard from other pointers
D.
Guard from parameter referencing

Question 17

The 'this' pointer is:

A.
Modifiable
B.
Non-Modifiable
C.
Are made variables
D.
None of the Above

Question 18

Which of the following are types of 'this' pointer?

A.
Const
B.
Volatile
C.
Both A & B
D.
Int

Question 19

The static member functions have access to:

A.
All the members of a class
B.
Only constant members of a class
C.
Only the static members of a class
D.
All other class members also

Question 20

The static members are:

A.
Created and initialized only once
B.
Created and initialized twice
C.
Created when necessary
D.
All of the Above

Question 21

Which of the following is correct?

A.
The static data member can’t be mutable
B.
If static data members are made inline, those can be initialized within the class
C.
We can use the static member functions and static data members even if the class object is not created
D.
All of the Above

Question 22

The keyword 'friend' is placed only in the:

A.
Function Declaration
B.
Function Definition
C.
Main Function
D.
Void Function

Question 23

Which of the following is correct?

A.
Friend functions can be invoked as a normal function
B.
Friend functions cannot access the members of the class directly
C.
Friend functions can be private or public
D.
All of the Above

Question 24

The syntax of a friend function is:

A.
Friend class;
B.
Friend class
C.
Friend class1, class2
D.
All of the Above

Question 25

A binary operator performs its action on:

A.
A single operand
B.
Two operands
C.
Three operands
D.
Any number of operands

Question 26

Which of the following is a unary operator?

A.
&
B.
\==
C.
*
D.
/

Question 27

Which of the following is a binary operator?

A.
&
B.
\==
C.
/
D.
All of the Above

Question 28

Which is called the ternary operator?

A.
?:
B.
&&
C.
||
D.
\===

Question 29

C-style type casting is also known as:

A.
Cast notation
B.
Type casting
C.
Function notation
D.
C notation

Question 30

There are three major ways in which we can use explicit conversion in C++:

A.
2
B.
3
C.
4
D.
5

Question 31

How many parameters does a conversion operator may take?

A.
0
B.
1
C.
2
D.
3

Question 32

What type of operator is a cast operator?

A.
Unary
B.
Binary
C.
Ternary
D.
None of the Above

Question 33

The compiler carries out which type of casting?

A.
Implicit
B.
Explicit
C.
Ex-Implicit
D.
All of the Above

Question 34

The programmer initiates which type of casting?

A.
Implicit
B.
Explicit
C.
Ex-Implicit
D.
All of the Above

Question 35

How many types of inheritance are there in C++?

A.
3
B.
4
C.
5
D.
6

Question 36

Single-level inheritance is:

A.
A class inheriting a derived class
B.
A class inheriting a base class
C.
A class inheriting a nested class
D.
A class which gets inherited by 2 classes

Question 37

Multiple Inheritance is not supported by:

A.
JAVA
B.
C++
C.
C
D.
JAVA and Smalltalk

Question 38

The feature of multiple inheritance in JAVA is done through:

A.
Interfaces Concept
B.
Diamond Problem
C.
Reusability concept
D.
None of the Above

Question 39

The diamond problem is associated with:

A.
Single
B.
Multiple
C.
Multi-Level
D.
Hierarchical

Question 40

Which constructor is called first if a derived class object is created?

A.
Base Class Constructor
B.
Copy Constructor
C.
Default
D.
Not possible

Question 41

In a single program, how many types of inheritance can be used?

A.
2
B.
3
C.
4
D.
Any type, any number of times

Question 42

If we use single inheritance, then the program will contain how many classes?

A.
At least 2
B.
3
C.
4
D.
At most 4

Question 43

Which constructor will be called first from the classes involved in single inheritance from the object of the derived class?

A.
Base class constructor
B.
Derived class constructor
C.
Both class constructors at a time
D.
Runtime error

Question 44

Multilevel inheritance is:

A.
A class derived from another derived class
B.
Classes being derived from other derived classes
C.
Continuing single-level inheritance
D.
A class which has more than one parent

Question 45

The minimum number of levels for implementing multilevel inheritance is:

A.
1
B.
2
C.
3
D.
4

Question 46

In multilevel inheritance, one class inherits:

A.
1 class
B.
2 classes
C.
3 classes
D.
4 classes

Question 47

In multilevel inheritance, which is the most significant feature of OOP used?

A.
Code readability
B.
Flexibility
C.
Code reusability
D.
All of the Above

Question 48

Multiple inheritance is defined as:

A.
A class is derived from another class
B.
A class is derived from two or more classes
C.
When a class is derived from other two derived classes
D.
When a class is derived from exactly one class

Question 49

To implement multiple inheritance, at least how many classes should a program contain?

A.
1
B.
2
C.
3
D.
4

Practice another set Take a test on this chapter →