HARMAN Senior Product Engineer Interview Questions, Process, and Tips

Closure is a function that has access to variables in its outer scope. Hoisting is the behavior of moving declarations to the top of the scope.

• Closure allows for private variables and functions in JavaScript.

• Hoisting can lead to unexpected behavior when variables are declared after they are used.

• Example of closure: function outer() { let x = 10; function inner() { console.log(x); } return inner; }

• Example of hoisting: c

Performance testing is the process of testing the speed, responsiveness, and stability of a software application under various conditions.

• Measures the speed, responsiveness, and stability of an application

• Helps identify bottlenecks and areas for improvement

• Involves simulating real-world usage scenarios

• Can include load testing, stress testing, and scalability testing

• Ensures the application meets performance requirements

Lift boundaries refer to the maximum and minimum values of a lift, while right refers to the direction of movement.

• Lift boundaries are the physical limits of how high or low a lift can go.

• Right refers to the direction in which the lift is moving, either up or down.

• For example, if a lift has a maximum boundary of 10 floors, it cannot go higher than that.

• If the lift is moving in the right direction, it is going up toward