Olympus Softwaretest Engineer Interview Questions and Answers

Interrupt vector table is a data structure that maps interrupt numbers to their corresponding interrupt service routines.

• It is used in microcontrollers and operating systems to handle interrupts.

• Each entry in the table contains the address of the interrupt service routine for a specific interrupt.

• When an interrupt occurs, the processor looks up the corresponding entry in the table to find the address of the ISR to exec...read more

Passing array of strings in a C function

• Declare the function prototype with array parameter

• Pass the array as argument when calling the function

• Access elements of the array within the function

• Example: void printStrings(char *strings[], int size) { }

React hooks are functions that let you use state and other React features without writing a class.

• Hooks are functions that let you use state and other React features in functional components

• useState() is a hook that allows you to add state to functional components

• useEffect() is a hook that allows you to perform side effects in functional components

• useContext() is a hook that allows you to use the context API in functio

Liskov Substitution Principle states that objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.

• Subtypes must be substitutable for their base types.

• Derived classes must be able to replace their base classes without affecting the program's behavior.

• Violating this principle can lead to unexpected behavior and errors in the code.

• Example: If a program expec...read more

Oops concept is a programming paradigm that focuses on objects and classes.

• Oops stands for Object-Oriented Programming

• Key concepts include inheritance, encapsulation, polymorphism, and abstraction

• Examples: Class Car with properties like make, model, and methods like start(), stop()

• Example: Inheritance - Class SUV extends Car and adds property numSeats