Find Interview Questions for Valueadd Softtech & System

Right Answer:
Front-end development involves creating the visual and interactive aspects of a website or application that users see and interact with, using technologies like HTML, CSS, and JavaScript. Back-end development focuses on the server-side, handling the database, server logic, and application functionality that users do not see, typically using languages like Python, Java, or Ruby, along with databases like MySQL or MongoDB.

Right Answer:
Adaptive AUTOSAR supports high-performance computing and service-oriented architecture by providing a flexible framework that allows for the deployment of applications on powerful hardware platforms. It utilizes a service-oriented architecture (SOA) that enables communication between distributed components through well-defined interfaces, facilitating the integration of complex applications and services. This architecture supports dynamic deployment and scalability, allowing for efficient resource management and high-performance processing in automotive systems.

Right Answer:
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Right Answer:
Performance tuning in ABAP involves optimizing the code and database access to enhance the efficiency and speed of ABAP programs. To improve performance, you can:

1. Use efficient SQL queries (e.g., SELECT only necessary fields).
2. Minimize database accesses (e.g., use internal tables).
3. Avoid nested loops and use hash tables for faster lookups.
4. Utilize buffering for frequently accessed data.
5. Optimize the use of SELECT statements with proper WHERE conditions.
6. Use appropriate data types and structures.
7. Analyze and optimize the runtime using transaction ST05 (SQL Trace) and ST12 (Performance Analysis).
8. Implement parallel processing where applicable.

Right Answer:
To configure Alfresco for full-text search and indexing, you primarily configure the `alfresco-global.properties` file. Key settings include:

* `index.subsystem.name`: Select the indexing engine (e.g., `solr6`, `solr`).
* Solr configuration: Adjust Solr connection details (host, port, core names) based on your chosen engine.
* `dir.root`: Specifies the location for the index storage.
* Tuning: Configure indexing performance parameters for optimal throughput, such as `index.batchIndexing.maxThreads`.

Right Answer:
OAuth is an open standard for access delegation commonly used for token-based authentication and authorization. It allows third-party applications to access a user's resources without sharing their credentials.

In API authentication, OAuth works by having the user authorize the application to access their data. The process involves:

1. The user is redirected to an authorization server to log in and grant permission.
2. The authorization server issues an access token to the application.
3. The application uses this access token to make API requests on behalf of the user.
4. The API validates the token and grants access to the requested resources.

Right Answer:
Rate limiting in APIs is a technique used to control the number of requests a user can make to an API within a specific time period. It is implemented by setting thresholds (e.g., requests per minute) and using mechanisms like tokens, counters, or IP address tracking to monitor and restrict access when the limit is exceeded.

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.

Right Answer:
HTTP methods are standardized request types used in APIs to perform actions on resources. The main methods are:

1. **GET**: Retrieve data from a server.
2. **POST**: Send data to a server to create a new resource.
3. **PUT**: Update an existing resource on the server.
4. **DELETE**: Remove a resource from the server.
5. **PATCH**: Apply partial modifications to a resource.

These methods define the action to be performed on the specified resource in the API.

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.

Right Answer:
To facilitate effective sprint retrospectives, I would:

1. **Set the Stage:** Create a safe and open environment where the team feels comfortable sharing.
2. **Gather Data:** Collect information about what went well, what didn't, and any challenges faced during the sprint.
3. **Generate Insights:** Facilitate a discussion to identify root causes and patterns.
4. **Decide on Actions:** Collaborate to define specific, actionable, measurable, achievable, relevant, and time-bound (SMART) improvements.
5. **Close the Retrospective:** Summarize action items and assign owners.
6. **Follow Up:** Track progress on action items in subsequent sprints to ensure continuous improvement.

Right Answer:
Agile ceremonies are recurring meetings within a sprint to facilitate communication, planning, and continuous improvement.

* **Sprint Planning:** The team decides what work to complete in the upcoming sprint. They discuss user stories, estimate effort, and define the sprint goal.

* **Daily Stand-up:** A brief daily meeting where the team shares progress, identifies roadblocks, and coordinates efforts. Each member typically answers: What did I do yesterday? What will I do today? Are there any impediments?

* **Sprint Review:** The team demonstrates the completed work to stakeholders, gathering feedback and ensuring alignment with expectations.

* **Sprint Retrospective:** The team reflects on the past sprint, identifying what went well, what could be improved, and defining action items to enhance future performance.

Right Answer:
The Scrum Master is a servant-leader who helps the Scrum Team follow the Scrum framework. They facilitate Scrum events (Sprint Planning, Daily Scrum, Sprint Review, Sprint Retrospective), remove impediments, protect the team from distractions, and coach the team on Agile principles and practices.

Right Answer:
"In one project, we underestimated the complexity of integrating a new third-party API. This caused us to miss our sprint goal. To address this, we immediately re-estimated the remaining work, broke down the integration into smaller, more manageable tasks, and increased communication with the API vendor. We also temporarily shifted team focus to prioritize the integration, delaying a lower-priority feature for the next sprint. Finally, in the sprint retrospective, we implemented a better vetting process for third-party integrations to avoid similar issues in the future."

Right Answer:
We prioritize features or tasks in an Agile sprint using a combination of factors like business value, risk, effort/size, dependencies, and urgency. Product Owner usually leads this, using techniques like MoSCoW (Must have, Should have, Could have, Won't have) or story pointing, to ensure the most valuable items are tackled first.