iLink Digital Interview Questions, Process, and Tips

Q1. What's manage and unmage in C++
Ans. 
manage and unmanage are not standard terms in C++
• There are no standard terms or concepts called 'manage' and 'unmanage' in C++

• These terms might be specific to a particular framework or library

• Without more context, it is difficult to provide a specific answer
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Q2. Difference between C and C++
Ans. 
C is a procedural programming language, while C++ is an extension of C with object-oriented programming features.
• C is a procedural language, while C++ supports both procedural and object-oriented programming paradigms.

• C++ has additional features like classes, objects, inheritance, and polymorphism.

• C++ supports exception handling and templates, which are not available in C.

• C++ has a standard template library (STL) that ...read more
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Q3. Why OOP is needed what's encapsulation, abstraction, polymorphism different types of polymorphism
Ans. 
OOP is needed for modular and reusable code. Encapsulation hides implementation details. Abstraction simplifies complex systems. Polymorphism allows objects to take on multiple forms.
• OOP promotes code reusability and modularity

• Encapsulation hides implementation details and protects data

• Abstraction simplifies complex systems by focusing on essential features

• Polymorphism allows objects to be used in multiple ways

• Types of...read more
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Q4. What is pure virtual function write one example of pure virtual function
Ans. 
A pure virtual function is a function declared in a base class that has no implementation and must be overridden in derived classes.
• Pure virtual functions are used to create abstract classes, which cannot be instantiated.

• They provide a common interface for derived classes to implement their own functionality.

• An example of a pure virtual function is a 'draw' function in a base 'Shape' class, which must be implemented by
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Q5. What's vtable and vpointer explain by drawing
Ans. 
vtable is a virtual function table used in object-oriented programming to implement dynamic dispatch.
• vtable is a data structure that contains pointers to the virtual functions of a class.

• vpointer is a pointer that points to the vtable of an object.

• It allows objects of different derived classes to be treated as objects of the base class.

• When a virtual function is called, the vpointer is used to find the correct function
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Q6. What's difference in pass by reference and pass by pointer which one is better?
Ans. 
Pass by reference and pass by pointer are both ways to pass data to a function, but they differ in how they access and modify the data.
• Pass by reference uses a reference to the original variable, allowing direct access and modification.

• Pass by pointer uses a pointer to the memory address of the variable, requiring dereferencing to access and modify the data.

• Pass by reference is generally considered safer and more conve...read more
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Q7. How to make dll. Can you make simple dll file
Ans. 
A DLL (Dynamic Link Library) is a file containing code and data that can be used by multiple programs simultaneously.
• To create a DLL, you need to write the code in a programming language like C++ or C#.

• Compile the code into an object file and then link it with a DLL linker to create the DLL file.

• DLLs can contain functions, classes, variables, and resources that can be accessed by other programs.

• DLLs provide code reusab...read more
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Q8. What's thread synchronization semaphores in threading what's critical section in threading One threading problem with 3 threads and how will you synchronize them?
Ans. 
Thread synchronization is the coordination of multiple threads to ensure they access shared resources in a controlled manner.
• Thread synchronization prevents race conditions and data inconsistencies.

• Semaphores are synchronization primitives used to control access to resources.

• Critical sections are code segments that must be executed atomically.

• A common threading problem is the producer-consumer problem.

• Synchronization m...read more
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Q9. Two sum problem from Leetcode
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Q1. Full stack dot net questions
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Q1. Technical +Managerial
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The aptitude round was quite easy.

Q1. Questions related to OOPs concept were asked
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Q1. Databricks basics, SQL joins
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Q2. Azure questions
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Q1. Advance SQL queries on window r functions
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Q2. SQL joins, pyspark coding questions, Azure AWS basic storage questions
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Q1. Experience with interview. basic HR questions intro,
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Q2. Feedback for interview process
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Q1. About the domain- skill related questions
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Q1. About the previous profile
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