Applications
What’s the main difference between a multimedia application and a standard one?
A multimedia app includes images, audio, or video; a standard one handles mostly text or data.
What is an event listener in programming?
A function that waits for an event (like a click or key press) and triggers code when it happens.
What is a primary key?
A unique identifier for each record in a table.
What is the difference between UX and UI?
UX is the user’s experience and satisfaction; UI is the visual design and interaction.
What is an IDE and what does it provide to the developer?
An IDE (Integrated Development Environment) provides code editing, debugging, and compiling tools.
Name two file formats commonly used for video and audio in applications.
MP4 (video), MP3 (audio), WAV, AVI, etc.
Explain the concept of inheritance in Object-Oriented Programming.
It allows a class to inherit properties and methods from another class.
What is the purpose of an ORM (Object-Relational Mapping) framework?
It maps objects in code to database tables, simplifying data handling.
What does “responsive design” mean?
It adapts the layout to different screen sizes and devices.
What is version control and why is it important?
It tracks code changes (e.g., Git) and allows collaboration and rollback.
What is “lazy loading” and why is it used for multimedia content?
It delays the loading of media until it’s needed, improving performance.
What is multithreading, and why is it useful in multimedia applications?
Running multiple threads at once to perform tasks simultaneously, e.g., loading audio while displaying video.
How would you store user-uploaded images efficiently in a database system?
Store file paths or URLs in the database and keep the files in a storage system.
Name two design patterns commonly used in user interface development.
MVC, MVVM, Singleton, or Observer.
Name two tools or technologies used for cross-platform development.
Flutter, Xamarin, React Native, Kotlin Multiplatform.
How can developers improve performance when an app uses many images and videos?
Compress files, use caching, and load media asynchronously.
What is the difference between synchronous and asynchronous code execution?
Synchronous runs tasks one after another; asynchronous allows multiple tasks to run without blocking.
Explain the difference between SQL and NoSQL databases. Give an example of each.
SQL is structured and relational (e.g., MySQL); NoSQL is document-based or key-value (e.g., MongoDB).
How can accessibility be improved in multimedia interfaces?
Add captions, alt text, and proper contrast; support keyboard navigation.
Explain the process of continuous integration (CI) and its advantages for a multimedia project.
It tests individual functions or components to detect errors early.
Explain how a cloud-based multimedia service (e.g., Firebase Storage) integrates with a multiplatform app.
The app connects via API to upload and retrieve media stored in the cloud.
How would you implement real-time video processing in a multiplatform app? (Briefly describe the logic or approach.)
Using threads or asynchronous APIs to capture, process, and display frames continuously (e.g., using OpenCV or native libraries).
How can transactions help ensure data integrity when uploading multimedia content?
They ensure all operations complete successfully or none do, avoiding partial uploads.
Explain the MVC (Model–View–Controller) pattern and how multimedia content fits into it.
The View displays multimedia; the Model stores its data; the Controller manages logic and user actions.
Explain the process of continuous integration (CI) and its advantages for a multimedia project.
CI automatically builds and tests code after every update, ensuring stability and faster deployment.