Quess Interview Questions and Answers

Pointer is a variable that stores the memory address of another variable. Used for dynamic memory allocation and accessing data structures.

• Pointers are used to access and manipulate memory addresses directly.

• Example: int *ptr; ptr = # *ptr = 10; // num now equals 10

• Reverse Link list: Reverses the order of nodes in a linked list.

• String concatenation: Combining two or more strings into a single string.

• Communication protocols i2c v/s SPI: I2C is slower but uses fewer pins, SPI i...read more

React JS is a JavaScript library for building user interfaces on web browsers, while React Native is a framework for building mobile applications using React.

• React JS is used for web development, while React Native is used for mobile app development.

• React JS renders components to the DOM, while React Native renders components to native mobile elements.

• React JS uses HTML and CSS for styling, while React Native uses StyleSheet for styling mobile apps.

Improve React Native app performance by optimizing code, reducing unnecessary re-renders, using native modules, and implementing code splitting.

• Optimize code by removing unnecessary dependencies and using efficient algorithms

• Reduce unnecessary re-renders by using shouldComponentUpdate or React.memo

• Use native modules for performance-critical tasks to leverage platform-specific optimizations

• Implement code splitting to load only necessary components when needed

Memory in a system refers to the storage space where data and instructions are temporarily stored for processing.

• Memory is essential for the functioning of a computer system as it stores data and instructions that are currently being used by the CPU.

• There are different types of memory in a system, such as RAM (Random Access Memory) and ROM (Read-Only Memory).

• RAM is volatile memory that is used for temporary storage of data and instructions, while ROM is non-volatile memory th...read more

UC architecture stands for Unified Communications architecture, which integrates various communication tools into a single platform.

• UC architecture combines voice, video, messaging, and collaboration tools into a unified platform.

• It allows users to access all communication tools from a single interface.

• Examples of UC architecture include platforms like Microsoft Teams, Cisco Webex, and Zoom.

Data structures in C are used to store and organize data efficiently.

• Data structures in C include arrays, linked lists, stacks, queues, trees, and graphs.

• They help in performing operations like insertion, deletion, searching, and sorting.

• For example, an array is a data structure that stores a fixed-size sequential collection of elements of the same type.