Agiliad Technologies Embedded Developer Interview Questions and Answers

Q1. What is copy constructor?
Ans. 
Copy constructor is a special type of constructor which creates a new object as a copy of an existing object.
• Copy constructor is used to initialize a new object as a copy of an existing object.

• It takes an object of the same class as a parameter.

• It is called automatically when a new object is created from an existing object.

• Example: class MyClass { public: MyClass(const MyClass& obj) { // copy constructor logic } };
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Q2. Difference between copy constructor and assignment operator
Ans. 
Copy constructor is used to create a new object as a copy of an existing object, while assignment operator is used to assign values from one object to another.
• Copy constructor is called when a new object is created from an existing object, while assignment operator is called when an existing object is assigned values from another object.

• Copy constructor creates a new object with its own memory space, while assignment o...read more
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Q3. What is static function
Ans. 
A static function is a function that is associated with a class rather than an instance of the class.
• Static functions can be called without creating an instance of the class.

• Static functions are commonly used for utility functions that do not require access to instance-specific data.

• Static functions are declared using the 'static' keyword in many programming languages.

• Example: 'Math.max()' in JavaScript is a static fun...read more
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Q4. Write Fibonacci series
Ans. 
Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
• Start with 0 and 1 as the first two numbers in the series

• Add the previous two numbers to get the next number in the series

• Repeat this process to generate the Fibonacci series
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Q5. What is single ton design pattern
Ans. 
Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
• Ensures a class has only one instance

• Provides a global point of access to that instance

• Commonly used in scenarios where only one instance of a class is needed, such as database connections or logging
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Q1. What is the concept of virtual inheritance in relation to vtables and vptrs in object-oriented programming?
Ans. 
Virtual inheritance allows a derived class to inherit from a base class without creating duplicate base class subobjects.
• Virtual inheritance is used to resolve the Diamond Problem in C++ where a class inherits from two classes that have a common base class.

• It ensures that only one copy of the base class is inherited by the derived class.

• Virtual inheritance introduces a virtual base class subobject to the derived class,...read more
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Q2. Explained about vtptr and vtable initialisation and structure
Ans. 
vtptr and vtable are key components of C++'s dynamic polymorphism, enabling method resolution at runtime.
• vtable (virtual table) is a static table created for each class with virtual functions, containing pointers to the virtual functions.

• vtptr (virtual table pointer) is a pointer in each object of a class that points to the vtable of its class.

• When an object is created, its vtptr is initialized to point to the vtable o...read more
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Q1. What is the implementation of a class for string operations?
Ans. 
A class for string operations can include methods for concatenation, substring extraction, length calculation, etc.
• Create a class with methods like concatenateStrings, extractSubstring, calculateLength, etc.

• Use string manipulation functions like substring, concat, length, etc. within the class methods.

• Ensure error handling for edge cases like empty strings or out-of-bounds indices.

• Example: class StringOperations { conc...read more
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Q1. Why do you want to join this company?
Ans. 
I admire your company's innovative approach and commitment to quality, which aligns with my career goals and values as a developer.
• Your company's focus on cutting-edge technology, like AI and machine learning, excites me as I want to work on impactful projects.

• I appreciate your commitment to professional development, such as mentorship programs, which will help me grow my skills.

• The collaborative culture here fosters c...read more
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Q2. What are the sql constraints?
Ans. 
SQL constraints are rules applied to table columns to enforce data integrity and validity.
• PRIMARY KEY: Uniquely identifies each record in a table. Example: `CREATE TABLE Users (UserID INT PRIMARY KEY);`

• FOREIGN KEY: Ensures referential integrity between two tables. Example: `FOREIGN KEY (UserID) REFERENCES Users(UserID)`.

• UNIQUE: Ensures all values in a column are different. Example: `CREATE TABLE Users (Email VARCHAR(25...read more
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It had a test combining both coding and aptitude. It was of 90 minutes. Questions were decent and doable.

Q1. Mostly asked about resume and subjects you took in college.
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30 min 30 ques and gaming ques

Q1. What is ML and AI in your project?
Ans. 
ML and AI are used in our project to analyze user behavior and provide personalized recommendations.
• ML algorithms are used to analyze user data and predict user preferences.

• AI is used to provide personalized recommendations based on the analysis of user behavior.

• Examples include recommendation systems for e-commerce websites and personalized content suggestions on streaming platforms.
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Q2. What is lagging concept and more?
Ans. 
Lagging concept refers to a concept or idea that is behind or not up to date compared to current standards or practices.
• Refers to outdated technology or methods in software development

• Can lead to inefficiencies, bugs, or security vulnerabilities

• Examples include using deprecated libraries or not following best practices for coding
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Q1. General overview of tech stack.
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Q1. General overview of the tech stack
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Q1. General overview of the tech stack
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Q1. How many Degree of freedom controlled in fixture?
Ans. 
The number of degrees of freedom controlled in a fixture depends on the type and complexity of the fixture.
• A simple fixture may control only one degree of freedom, such as rotation around a single axis.

• A more complex fixture may control multiple degrees of freedom, such as rotation around multiple axes and translation in multiple directions.

• The number of degrees of freedom controlled in a fixture can also depend on the...read more
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Q2. 12 Degree Of Freedom.
Ans. 
12 Degree of Freedom refers to the number of independent movements a rigid body can make in 3D space.
• A rigid body with 12 degrees of freedom can move in any direction and rotate around any axis.

• The 12 degrees of freedom are divided into 6 translational and 6 rotational degrees of freedom.

• Examples of systems with 12 degrees of freedom include a spacecraft in orbit or a robot arm with 6 joints.
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