Find Interview Questions for Wibmo

Right Answer:
Clustering in data analysis is the process of grouping similar data points together based on their characteristics, without prior labels. It is an unsupervised learning technique. In contrast, classification involves assigning predefined labels to data points based on their features, using a supervised learning approach.

Right Answer:
Data normalization is the process of organizing data in a database to reduce redundancy and improve data integrity. It involves structuring the data into tables and defining relationships between them. Normalization is important because it helps eliminate duplicate data, ensures data consistency, and makes it easier to maintain and update the database.

Right Answer:
Some common data visualization techniques include:

1. Bar Charts
2. Line Graphs
3. Pie Charts
4. Scatter Plots
5. Histograms
6. Heat Maps
7. Box Plots
8. Area Charts
9. Tree Maps
10. Bubble Charts

Right Answer:
Classification analysis is a data analysis technique used to categorize data into predefined classes or groups. It works by using algorithms to learn from a training dataset, where the outcomes are known, and then applying this learned model to classify new, unseen data based on its features. Common algorithms include decision trees, logistic regression, and support vector machines.

Right Answer:
SQL (Structured Query Language) is used in data analysis to query, manipulate, and manage data stored in relational databases. It allows analysts to retrieve specific data, perform calculations, filter results, and aggregate information to derive insights from large datasets.

Right Answer:
APIs (Application Programming Interfaces) in mobile app development allow different software applications to communicate with each other, enabling the app to access external services, data, and functionalities, such as databases, web services, and third-party integrations, which enhances the app's capabilities and user experience.

Right Answer:
Some common challenges in mobile app development include:

1. Device Fragmentation: Different screen sizes, resolutions, and operating systems.
2. Performance Optimization: Ensuring the app runs smoothly on various devices.
3. Security: Protecting user data and preventing breaches.
4. User Experience: Designing intuitive interfaces that meet user expectations.
5. Connectivity Issues: Handling offline functionality and varying network conditions.
6. App Store Guidelines: Complying with different app store requirements and policies.
7. Testing: Ensuring the app works correctly across multiple devices and platforms.

Right Answer:
Native apps are developed specifically for one platform (like iOS or Android) using platform-specific languages and tools, providing better performance and access to device features. Web apps are accessed through a web browser and are built using standard web technologies (HTML, CSS, JavaScript), while hybrid apps combine elements of both, allowing them to run on multiple platforms but often with less performance than native apps.

Right Answer:
To publish an app on the Google Play Store, you need to:

1. Create a Google Play Developer account.
2. Prepare your app (APK or AAB file) and ensure it meets the Play Store guidelines.
3. Fill out the app listing details (title, description, screenshots, etc.).
4. Upload the app file and set the pricing and distribution options.
5. Submit the app for review.

To publish an app on the Apple App Store, you need to:

1. Enroll in the Apple Developer Program.
2. Prepare your app (IPA file) and ensure it meets the App Store guidelines.
3. Use Xcode to archive your app and upload it to App Store Connect.
4. Fill out the app listing details (title, description, screenshots, etc.) in App Store Connect.
5. Submit the app for review.

Right Answer:
An SDK (Software Development Kit) provides developers with the tools, libraries, documentation, and APIs needed to create mobile applications for a specific platform, simplifying the development process and enabling access to platform-specific features.