Find Interview Questions for Uvj technologies pvt.ltd - india

Right Answer:
Version control is a system that records changes to files over time, allowing multiple people to collaborate on a project. It is important in software development because it helps track changes, manage code versions, facilitate collaboration, and recover previous versions if needed.

Right Answer:
I have experience working with AEM Sites by developing and managing web pages using templates and components. I have also worked with AEM Assets for organizing and optimizing digital assets, including images and videos, and I have experience with AEM Forms for creating and managing forms and workflows.

Right Answer:
To debug ARM compiled code using tools like Keil or GDB, follow these steps:

1. **Compile with Debug Information**: Ensure your code is compiled with debug symbols enabled (use the `-g` flag for GCC or the appropriate setting in Keil).

2. **Load the Program**: Use Keil's uVision or GDB to load the compiled binary onto the target device or simulator.

3. **Set Breakpoints**: In Keil, set breakpoints using the GUI. In GDB, use the command `break <function_name>` or `break <line_number>`.

4. **Run the Program**: Start the execution of your program. In Keil, click the "Run" button; in GDB, use the command `run`.

5. **Step Through Code**: Use step commands to execute your code line by line (`step` or `next` in GDB).

6. **Inspect Variables**: Check variable values and memory

Right Answer:
AEM (Adobe Experience Manager) architecture is based on three core components:

1. **Sling**: A web framework that maps HTTP requests to content resources. It allows developers to create dynamic web applications by using a resource-oriented approach, enabling easy access to content stored in the JCR.

2. **OSGi**: A modular system and service platform that allows for the dynamic loading and unloading of components (bundles). In AEM, OSGi manages the lifecycle of these components, enabling modular development and deployment.

3. **JCR (Java Content Repository)**: A specification for a content repository that stores and manages content in a hierarchical structure. AEM uses JCR to store all content, including pages, assets, and configurations, allowing for efficient content retrieval and management.

Together, these components enable AEM to deliver a flexible, scalable, and efficient content management solution.

Right Answer:
Transparent tables are database tables that have a one-to-one relationship with database tables in the underlying database, meaning each transparent table corresponds to a single table in the database. Pooled tables and cluster tables, on the other hand, are used to store multiple logical tables in a single database table. Pooled tables combine several tables into a single table for efficiency, while cluster tables group related tables together, allowing for more complex data structures.

Right Answer:
A web server handles an HTTP request by following these steps:

1. **Receive Request**: The server listens for incoming HTTP requests on a specific port (usually port 80 for HTTP or port 443 for HTTPS).
2. **Parse Request**: It parses the request to extract the method (GET, POST, etc.), URL, headers, and body.
3. **Process Request**: The server determines how to respond based on the request. This may involve retrieving files, querying a database, or executing server-side scripts.
4. **Generate Response**: It creates an HTTP response, which includes a status code (like 200 for success), headers, and the requested content (like HTML, JSON, etc.).
5. **Send Response**: The server sends the response back to the client (usually a web browser) over the network.
6. **Log Request**: Optionally, the server logs the request details for monitoring and analysis.

Right Answer:
Promises in JavaScript are objects that represent the eventual completion (or failure) of an asynchronous operation and its resulting value. They allow you to handle asynchronous code more easily by providing methods like `.then()` for success and `.catch()` for errors.

`async` and `await` are syntactic sugar built on top of promises. An `async` function always returns a promise, and within an `async` function, you can use `await` to pause execution until a promise is resolved, making the code easier to read and write as if it were synchronous.

Right Answer:
JavaScript closures are functions that remember their outer scope even when the function is executed outside that scope. They work by capturing the variables from their surrounding environment, allowing access to those variables even after the outer function has finished executing. This is useful for data encapsulation and maintaining state in asynchronous programming.

Right Answer:
`var` is function-scoped or globally-scoped and can be re-declared and updated. `let` is block-scoped, can be updated but not re-declared in the same scope. `const` is also block-scoped, cannot be updated or re-declared, and must be initialized at the time of declaration.

Right Answer:
The DOM (Document Object Model) is a programming interface for web documents that represents the structure of a webpage as a tree of objects. You can manipulate the DOM using JavaScript by selecting elements (e.g., using `document.getElementById`, `document.querySelector`), modifying their properties (e.g., `element.innerHTML`, `element.style`), adding or removing elements (e.g., `element.appendChild`, `element.remove`), and responding to events (e.g., `element.addEventListener`).