Al-Jazeera Senior Engineer Interview Questions and Answers

Q1. Project related
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Q1. Scenario based question on kafka
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How to handle emergency.

Q1. Boiler light up sop
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Q2. Turbine rolling procedure
Ans. 
Turbine rolling procedure involves carefully starting and stopping the turbine to prevent damage.
• Ensure proper lubrication of bearings before starting the turbine.

• Gradually increase the speed of the turbine to prevent sudden stress on the components.

• Monitor temperature and vibration levels during the rolling procedure.

• Follow manufacturer's guidelines for specific turbine rolling procedures.

• Perform regular maintenance c
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Q1. Hashmap internal working
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Q2. Equals and hashcode
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Q1. Microservice design pattern
Ans. 
Microservice design pattern focuses on breaking down a large application into smaller, independent services.
• Each microservice is responsible for a specific function or feature

• Communication between microservices is typically done through APIs

• Microservices can be developed, deployed, and scaled independently

• Examples: Netflix, Amazon, Uber
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Q2. Springboot annotation
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Q1. Dg change over panal reading
Ans. 
The reading on the DG changeover panel indicates the status of the diesel generator system.
• The reading on the panel will show which power source (main or backup) is currently supplying electricity.

• It may also display information about the load on the generator and any alarms or warnings.

• Regularly monitoring the panel reading is important to ensure smooth operation of the generator system.
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Q2. Ahu maintenance ke side se
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Q1. Ahu solar panel
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Q2. Plc and working dol starter
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Q1. Use of model in laravel
Ans. 
Models in Laravel are used to interact with the database and represent data.
• Models in Laravel are used to perform database operations such as retrieving, inserting, updating, and deleting data.

• Models help in organizing and structuring the data in the application.

• Models in Laravel follow the MVC (Model-View-Controller) pattern.

• Example: Creating a User model in Laravel to interact with the users table in the database.
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Q2. SQL get highest salary for employee
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Q1. SQL joins and types of joins
Ans. 
SQL joins are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table.

• F...read more
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Q2. What is self join and realted question
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Q1. Previous projects and contributions
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Q1. Order management coding Crud api using in memory storage
Ans. 
Implement CRUD API for order management using in-memory storage
• Use RESTful endpoints for CRUD operations (GET, POST, PUT, DELETE)

• Store orders in a data structure like a list or dictionary in memory

• Handle error cases like invalid input or missing data

• Implement validation for input data to ensure data integrity
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Q1. Tell about yourself
Ans. Name, address, family details and past company details with work experince
Answered by dheeraj kumar gupta
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Q2. What is structured way to problem solving.
Ans. 
A structured way to problem solving involves defining the problem, generating possible solutions, evaluating those solutions, and implementing the best one.
• Define the problem clearly and understand its root cause.

• Generate multiple possible solutions to the problem.

• Evaluate each solution based on feasibility, effectiveness, and impact.

• Select the best solution and create an action plan for implementation.

• Monitor and eval
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Q1. Tell about your self
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Q1. Design a system like youtube
Ans. 
Design a system similar to YouTube for video sharing and streaming
• Implement user authentication and authorization for uploading and viewing videos

• Create a database to store video metadata, user information, and comments

• Develop a recommendation algorithm based on user preferences and viewing history

• Utilize a content delivery network (CDN) for efficient video streaming

• Include features like video monetization, live stream
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