10+ Man Foods Interview Questions and Answers

Mock test cases using jest and react-testing library

• Use jest.fn() to create mock functions for testing

• Use jest.mock() to mock dependencies

• Use render() from react-testing library to render components for testing

• Use fireEvent() from react-testing library to simulate user interactions

• Use expect() from jest to make assertions on test results

I/O streams are channels through which data can be transferred between a program and an external source or destination.

• I/O streams can be used for reading input from a keyboard or file

• I/O streams can be used for writing output to a screen or file

• I/O streams can be used for network communication

Middleware is software that acts as a bridge between different applications or components, allowing them to communicate and work together.

• Middleware facilitates communication between different software components

• It can handle tasks such as data transformation, security, and routing

• Examples include message brokers like RabbitMQ, API gateways like Kong, and web servers like Nginx

A callback is a function that is passed as an argument to another function and is executed after a specific event occurs.

• Used in asynchronous programming to handle responses or events

• Allows for more flexible and modular code

• Commonly used in JavaScript for event handling

Function declaration is hoisted and can be called before it's defined, while function expression is not hoisted and must be defined before it's called.

• Function declaration is hoisted, function expression is not

• Function declaration can be called before it's defined, function expression must be defined before it's called

• Function declaration syntax: function myFunction() {}, function expression syntax: const myFunction = function() {}

Fibonacci code generates a series of numbers where each number is the sum of the two preceding ones.

• Start with two initial numbers, usually 0 and 1

• Iterate through a loop to calculate the next number by adding the previous two numbers

• Repeat until desired number of Fibonacci numbers are generated

Error boundaries in JS help catch and handle errors in React components.

• Error boundaries are React components that catch JavaScript errors anywhere in their child component tree.

• They log errors and display a fallback UI instead of crashing the whole app.

• To create an error boundary, define a new component with componentDidCatch(error, info) method.

• Use error boundaries sparingly as they only catch errors in components below them in the tree.

• Example: class ErrorBoundary extends ...read more

Event Looping in JS is the mechanism that allows JavaScript to handle asynchronous operations by executing callback functions in a non-blocking way.

• Event Loop is responsible for executing code, collecting and processing events, and executing queued sub-tasks.

• JS is single-threaded, so Event Loop helps in managing asynchronous operations without blocking the main thread.

• Tasks are added to the call stack, then executed and removed. If a task is asynchronous, it is moved to the W...read more

My expected CTC is based on industry standards and my experience level.

• Based on my research, I am expecting a salary in the range of $80,000 to $100,000 per year.

• I am open to negotiation based on the overall compensation package offered by the company.

• I am looking for a competitive salary that reflects my skills and experience in the software engineering field.

Use SQL loop query to unnest nested list

• Use a recursive CTE (Common Table Expression) to unnest the nested list

• Join the CTE with the original table to retrieve the unnested data

• Consider using functions like JSON_ARRAY_ELEMENTS() for JSON data

Agile metrics include velocity, burndown charts, lead time, cycle time, and sprint burndown.

• Velocity: Measure of work completed in a sprint

• Burndown charts: Track progress towards completing all work in a sprint

• Lead time: Time taken from a customer request to its completion

• Cycle time: Time taken to complete a task once work begins

• Sprint burndown: Track progress of work within a sprint

String intern is a method in Java that returns a canonical representation of a string object.

• String intern() method returns a canonical representation for the string object.

• It returns the string from the pool of strings, if it is already present.

• If not present, then it adds the string to the pool and returns the reference.

I have over 5 years of experience as a Data Analyst, working on various projects and overcoming challenges.

• Experience in analyzing large datasets and extracting valuable insights

• Challenges include dealing with incomplete or messy data, and finding creative solutions to data-related problems

• Proficient in using tools like SQL, Python, and Tableau to manipulate and visualize data

• Experience in presenting findings to stakeholders and making data-driven recommendations