Neilsoft Interview Questions, Process, and Tips

Q1. Explain Basics OOP Pillars
Ans. 
The basics of OOP (Object-Oriented Programming) pillars are encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundling data and methods together in a class to hide implementation details.

• Inheritance: Creating new classes from existing ones, inheriting their properties and behaviors.

• Polymorphism: Objects of different classes can be treated as objects of a common superclass, allowing flexibility and extensibili
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Q2. What's copy constructor. Why it's passed by reference Why copy constructor can not be void
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A copy constructor is a special constructor that creates a new object by copying the values of another object.
• Copy constructor is used to create a new object with the same values as an existing object.

• It is passed by reference to avoid unnecessary object copying, which can be expensive.

• Copy constructor cannot be void because it needs to return the newly created object.
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Q3. Difference in array and linked list
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Array is a contiguous block of memory, while linked list is a collection of nodes connected by pointers.
• Array has constant time access to elements, while linked list requires traversing the list.

• Array has fixed size, while linked list can dynamically grow or shrink.

• Insertion and deletion in array is expensive, while linked list can easily insert or delete nodes.

• Array is suitable for random access, while linked list is
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Q4. Given three points how to check if they are colinear
Ans. 
To check if three points are colinear, calculate the slope between each pair of points and compare them.
• Calculate the slope between the first two points using the formula: slope = (y2 - y1) / (x2 - x1)

• Calculate the slope between the second and third points using the same formula

• If the slopes between all pairs of points are equal, then the points are colinear
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Q5. Given point and circle how to find if point is inside circle or outside circle
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To determine if a point is inside or outside a circle, calculate the distance between the point and the center of the circle.
• Calculate the distance between the point and the center of the circle using the distance formula: sqrt((x2 - x1)^2 + (y2 - y1)^2)

• If the distance is less than the radius of the circle, the point is inside the circle. If it is equal to the radius, the point is on the circle. Otherwise, it is outsid
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Q6. How to find resultant of two vectors in terms of magnitude and direction
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The resultant of two vectors can be found by adding the magnitudes and finding the direction using trigonometry.
• To find the magnitude of the resultant, use the Pythagorean theorem: magnitude = sqrt(a^2 + b^2)

• To find the direction of the resultant, use trigonometry: direction = atan(b/a)

• If the vectors are given in terms of their components, add the corresponding components to find the resultant
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Q7. Can child class point points to base class?
Ans. 
Yes, a child class can point to a base class.
• In object-oriented programming, a child class can inherit from a base class and use its methods and properties.

• A child class can also override the methods of the base class to provide its own implementation.

• Polymorphism allows a child class object to be treated as a base class object, enabling it to point to the base class.

• This is useful for code reusability and creating a h
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They ask question on SFD AND BMD

Q1. They ask question on SFD & BMD
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Q2. And they also ask question on orthographic
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Q1. QUESTIONS ON JAVASCRIPT, REST API's, REACT, REDUX
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Q2. MORE ASKED IN REACT,REDUX & REST API's
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Q1. All technical, analytical questions asked in REACT
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Q1. Regarding Revit and BIM?
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Q2. Regarding your experience and project?
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Q1. Related to team management
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Q1. Man hour calculation
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Q2. Be prepared for what you have written in your cv
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Piping MCQ - stress, material, layout

Q1. Pressure temperature rating, codes & standards
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