Annalect Technical Lead Interview Questions and Answers

Q1. JavaScript Puzzle
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Q2. React Basics and currect project overview
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Q1. System Design of Netflix
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Netflix system design involves microservices architecture, content delivery networks, recommendation algorithms, and user personalization.
• Microservices architecture for scalability and flexibility

• Content delivery networks for fast and reliable streaming

• Recommendation algorithms for personalized content suggestions

• User personalization for enhancing user experience
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Q1. Culture fit and salary negotiation
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Prepare DSA, Programing and DB

Q1. Question related to Programing lanquage
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Q1. Salary Expectation
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Data architecture for e retail business

Q1. APache spark, hive hadopp and teradata
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Q1. Print greater number using lambda function
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Use lambda function to print greater number
• Define a lambda function that takes two parameters

• Use the max() function inside the lambda to compare the two numbers

• Call the lambda function with two numbers to print the greater one
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Q2. Explain OOPs concepts
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OOPs concepts refer to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation detail
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Q3. All major C++ topics were covered
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Q1. Singleton design pattern
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Q2. Code for Fibonacci series -- both iterative and recursive
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Fibonacci series code in iterative and recursive methods
• Iterative method: Use a loop to calculate Fibonacci numbers

• Recursive method: Define a function that calls itself to calculate Fibonacci numbers

• Example for iterative method: int fib(int n) { int a = 0, b = 1, c; for(int i = 2; i <= n; i++) { c = a + b; a = b; b = c; } return b; }

• Example for recursive method: int fib(int n) { if(n <= 1) return n; return fib(n-1) + f
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Q1. Print 1-10 using 2 threads, in correct order
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Use two threads to print numbers 1-10 in correct order
• Create two threads, one for printing odd numbers and one for printing even numbers

• Use synchronization mechanisms like mutex or semaphore to ensure correct order

• Example: Thread 1 prints 1, 3, 5, 7, 9 and Thread 2 prints 2, 4, 6, 8, 10
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Q2. How to do Unit testing in C++
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Unit testing in C++ involves writing test cases for individual units of code to ensure they work as expected.
• Use a unit testing framework like Google Test or Catch2 to write and run test cases

• Create separate test files for each unit of code being tested

• Use assertions to check the expected behavior of the code under test

• Mock dependencies or use dependency injection to isolate units for testing

• Run tests regularly to catc
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Q1. System design was asked
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Q1. SCD, PDL Conduct>IT Basic partitioning scenarios
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Q1. Mostly Client round , technical questions
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Q1. Salary discussion and basic details
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Q1. Design patterns, earlier experiance, good javascript knoweldge , in depth knoweldge of coding
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Coding test on Angular to test the basic concepts

Q1. Difference between promise vs observables?
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Promises are used for a single async operation while observables are used for multiple async operations and can be cancelled.
• Promises are eager, meaning they start immediately upon creation.

• Observables are lazy, meaning they only start when subscribed to.

• Promises can only handle a single value or error, while observables can handle multiple values over time.

• Observables can be cancelled, while promises cannot.

• Promises a...read more
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Q2. What is call stack and event loop in JavaScript?
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Call stack is a data structure that stores function calls in JavaScript, while event loop manages asynchronous operations.
• Call stack is a mechanism for managing function invocation in JavaScript.

• Functions are added to the call stack when they are invoked and removed when they are completed.

• Event loop is responsible for handling asynchronous operations in JavaScript.

• Event loop continuously checks the call stack and the ...read more
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Q1. Why do you want to join IRIS?
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