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Stibo Interview Questions and Answers
Ques:- How do you monitor performance and scale Alfresco for large enterprises
Right Answer:
Monitor using tools like JMX, Activiti Admin UI, and database monitoring tools. Scale horizontally by clustering Alfresco and databases, and by using caching mechanisms like Redis or Memcached.
Ques:- How do you use inline assembly in ARM C code
Right Answer:
To use inline assembly in ARM C code, you can use the `asm` keyword followed by the assembly instructions in a string. For example:

```c
asm("MOV R0, #1");
```

You can also use the extended syntax for more complex operations:

```c
asm volatile (
"MOV R0, #1n"
"ADD R1, R0, #2"
);
```

Make sure to include any necessary input and output operands if needed.
Ques:- What is a lookup file and how is it different from a join
Right Answer:
A lookup file is a static reference file used to retrieve additional information based on a key value during data processing. It is typically smaller and used for quick lookups. A join, on the other hand, combines two or more datasets based on a common key, merging their records into a single output. The key difference is that a lookup file is used for referencing data, while a join is used for combining datasets.
Ques:- What are aspects in Alfresco and how are they used
Right Answer:
Aspects in Alfresco are reusable metadata bundles or behaviors that can be dynamically added to nodes (files or folders). They're used to:

* **Add extra properties:** Attach extra metadata fields (like "Classifiable" or "Geographic").
* **Add behavior/functionality:** Enable certain actions or rules (like versioning or workflow participation).
* **Categorize content:** Tag content with specific characteristics for searching and filtering.
Ques:- How do you ensure traceability from requirements to integrated software
Right Answer:
To ensure traceability from requirements to integrated software, I use a requirements management tool to document and link each requirement to its corresponding design, implementation, and test cases. I maintain a traceability matrix that maps requirements to their implementation in the software components and verify that each requirement is tested through integration testing. Regular reviews and updates are conducted to ensure all changes are reflected in the traceability documentation.
Ques:- What is the difference between REST and SOAP APIs
Right Answer:
REST (Representational State Transfer) is an architectural style that uses standard HTTP methods and is typically more lightweight and easier to use, while SOAP (Simple Object Access Protocol) is a protocol that relies on XML for message format and has strict standards for security and transactions. REST is generally more flexible and faster, while SOAP is more suited for enterprise-level services requiring high security and reliability.
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 documentation and why is it necessary
Right Answer:
API documentation is a technical manual that explains how to use an API, including its endpoints, request and response formats, authentication methods, and examples. It is necessary because it helps developers understand how to integrate and interact with the API effectively, ensuring proper usage and reducing errors.
Ques:- What is an API endpoint and how do you define it
Right Answer:
An API endpoint is a specific URL or URI where an API can be accessed by a client to perform operations like retrieving or sending data. It defines the location and method (such as GET, POST) for interacting with the API.
Ques:- What is the difference between synchronous and asynchronous API calls
Right Answer:
Synchronous API calls wait for the response before moving on to the next task, while asynchronous API calls allow the program to continue executing other tasks while waiting for the response.
Ques:- Can you describe a time when an Agile project didn’t go as planned and how you handled it
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."
Ques:- What tools or software do you use for Agile project management and why
Right Answer:
I've used tools like Jira, Azure DevOps, and Trello for Agile project management. I choose them based on project needs; Jira for complex workflows and robust reporting, Azure DevOps for integrated development environments, and Trello for simpler, visually-oriented task management.
Ques:- How do you handle scope creep or changes during a sprint
Right Answer:
During a sprint, I generally avoid scope creep. If a change request is small and doesn't impact the sprint goal, the team can discuss and decide if it can be included. If the change is significant, it goes into the product backlog to be prioritized for a future sprint.
Ques:- What is the importance of cross-functional teams in Agile, and how do you foster collaboration
Right Answer:
Cross-functional teams in Agile are important because they bring together all the necessary skills to complete work without dependencies on other teams. This leads to faster delivery, better problem-solving, and increased innovation. To foster collaboration, encourage open communication, shared understanding of goals, mutual respect, and a focus on collective ownership.
Ques:- How do you facilitate and ensure effective sprint retrospectives
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.
Ques:- What is the difference between Risk and Issues in Project Management?
Right Answer:
Risk refers to potential events that may negatively impact a project in the future, while issues are current problems that are already affecting the project and need to be addressed.
Ques:- How to create a plan? What is resource leveling? How time sheets are created in PWA? What is a baseline?
Right Answer:
To create a plan, define project goals, identify tasks, estimate durations, assign resources, and establish a timeline. Resource leveling is the process of adjusting the start and finish dates of tasks to balance resource allocation and avoid overloading. Timesheets in Project Web App (PWA) are created by users logging hours worked on tasks, which can then be submitted for approval. A baseline is a fixed reference point that captures the original project plan, including scope, schedule, and cost, allowing for performance comparison throughout the project.
Ques:- What are the Risk Factors during Project Implementation?
Right Answer:
Risk factors during project implementation include:

1. Scope Creep: Uncontrolled changes or continuous growth in project scope.
2. Resource Availability: Lack of necessary resources, including personnel and materials.
3. Budget Overruns: Exceeding the allocated budget due to unforeseen expenses.
4. Time Constraints: Delays in project timelines affecting delivery.
5. Stakeholder Engagement: Lack of support or communication from stakeholders.
6. Technology Issues: Problems with tools or systems used in the project.
7. Regulatory Compliance: Failing to meet legal or industry standards.
8. Team Dynamics: Conflicts or lack of collaboration among team members.
9. Market Changes: Shifts in market conditions affecting project relevance.
10. Risk Management: Inadequate identification and mitigation of potential risks.
Ques:- What do you do to compress the time frame when delay occurred
Right Answer:
To compress the time frame when a delay occurs, I would prioritize tasks, reallocate resources, implement parallel processing where possible, and negotiate with stakeholders for flexibility on deadlines or scope adjustments.
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