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Ques:- How do you create and manage templates and components in AEM
Right Answer:
To create and manage templates and components in AEM, follow these steps:

1. **Create a Template**:
- Navigate to the AEM Sites console.
- Select the appropriate site and click on "Create" > "Page".
- Choose a template from the available options or create a new one using the Template Editor.

2. **Create a Component**:
- Go to the AEM Sites console and navigate to the "Apps" folder.
- Right-click on the desired location and select "Create" > "Component".
- Define the component properties, including name, description, and the component type (e.g., HTL, JSP).

3. **Manage Templates and Components**:
- Use the AEM Touch UI or Classic UI to edit, configure, and manage templates and components.
- Utilize the "Component Policy" to define the behavior and properties of components.
- Version control can be managed through AEM's built-in versioning features.

4. **Testing and Publishing**:
- Test the templates and components in the author environment.
- Once verified, publish them to the publish environment for live use.

5. **Maintain and Update**:
- Regularly review and update templates and components as needed to ensure they meet project requirements and best practices.
Ques:- What is the role of a software developer and how does it differ from other roles like a software engineer or architect
Right Answer:
A software developer primarily focuses on writing, testing, and maintaining code to create software applications. They are involved in the implementation of features and fixing bugs. In contrast, a software engineer applies engineering principles to software development, often involving system design and architecture. A software architect, on the other hand, is responsible for the overall structure and high-level design of software systems, making decisions about technology and frameworks used.
Ques:- What is an ALV report and how do you create one in ABAP
Right Answer:
An ALV (ABAP List Viewer) report is a tool in SAP that allows for the display of data in a structured and interactive format. To create an ALV report in ABAP, follow these steps:

1. Use the function module `REUSE_ALV_GRID_DISPLAY` or `REUSE_ALV_LIST_DISPLAY`.
2. Define the data structure and internal table to hold the data.
3. Populate the internal table with data from the database.
4. Define field catalog for column headers and attributes.
5. Call the ALV function module, passing the internal table and field catalog as parameters.

This will generate an interactive report with sorting, filtering, and layout options.
Ques:- What is the role of integration testing in the AUTOSAR development process
Right Answer:
Integration testing in the AUTOSAR development process ensures that different software components and modules work together as intended. It verifies the interactions between components, checks for interface compatibility, and identifies issues that may arise when integrating various parts of the system, ultimately ensuring the overall functionality and reliability of the AUTOSAR application.
Ques:- What are RESTful principles and how do they apply to API design
Right Answer:
RESTful principles include:

1. **Statelessness**: Each API call must contain all the information needed to understand and process the request, with no stored context on the server.
2. **Client-Server Architecture**: The client and server are separate, allowing for independent development and scalability.
3. **Uniform Interface**: A consistent way to interact with resources, typically using standard HTTP methods (GET, POST, PUT, DELETE).
4. **Resource-Based**: APIs should expose resources (data entities) through URIs, and clients interact with these resources.
5. **Representation**: Resources can be represented in various formats (like JSON or XML), and clients can request the format they prefer.
6. **Cacheability**: Responses should indicate whether they can be cached to improve performance and reduce server load.

These principles guide the design of APIs to be scalable, efficient, and easy to use.
Ques:- What are the common status codes in HTTP responses
Right Answer:
The common status codes in HTTP responses are:

- **200**: OK
- **201**: Created
- **204**: No Content
- **400**: Bad Request
- **401**: Unauthorized
- **403**: Forbidden
- **404**: Not Found
- **500**: Internal Server Error
- **502**: Bad Gateway
- **503**: Service Unavailable
Ques:- What is API authentication and what are common methods
Right Answer:
API authentication is the process of verifying the identity of a user or application trying to access an API. Common methods include:

1. **API Keys**: Unique keys provided to users to access the API.
2. **Basic Authentication**: Uses a username and password encoded in Base64.
3. **OAuth**: A token-based authentication method that allows users to grant limited access to their resources without sharing credentials.
4. **JWT (JSON Web Tokens)**: A compact, URL-safe means of representing claims to be transferred between two parties, often used for stateless authentication.
5. **HMAC (Hash-based Message Authentication Code)**: Uses a secret key to create a hash of the request, ensuring data integrity and authenticity.
Ques:- What is CORS and how does it affect API development
Right Answer:
CORS, or Cross-Origin Resource Sharing, is a security feature implemented by web browsers that allows or restricts web applications from making requests to a domain different from the one that served the web page. It affects API development by requiring developers to configure their APIs to specify which origins are allowed to access their resources, ensuring that only trusted domains can interact with the API.
Ques:- What is a web service and how does it relate to an API
Right Answer:
A web service is a standardized way of allowing different applications to communicate over the internet using protocols like HTTP. It provides a method for applications to exchange data and perform operations. An API (Application Programming Interface) is a set of rules and tools that allows different software applications to interact with each other. A web service is a type of API that specifically uses web protocols to enable this interaction.
Ques:- Please estimate the total revenue of [a particular juice brand] from the Swedish market who has a 10% market share. You have 5 minutes?
Right Answer:
To estimate the total revenue of the juice brand in the Swedish market, you need to know the total market size for juice in Sweden. If we assume the total market size is, for example, 1 billion SEK, then with a 10% market share, the revenue would be 100 million SEK. Please replace the market size with the actual figure if known.
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