FabHotels Customer Service Engineer Interview Questions and Answers

Q1. Use of model in laravel
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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
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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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3 data structure problem with medium to hard level leetcode type.

Q1. 1st question was on vertical order traversal in a tree. it was from gfg he also told me to optimise it
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Q2. 2nd question was from leetcode ie meeting rooms ll , medium question
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There were 3 coding questions totally based on dsa- hard

Q1. Vertical Traversal
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Q2. Find the node with shortest distance
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Use Dijkstra's algorithm to find the node with the shortest distance in a graph.
• Implement Dijkstra's algorithm to calculate the shortest distance from a starting node to all other nodes in the graph.

• Select the node with the smallest distance that has not been visited yet as the current node.

• Update the distances of neighboring nodes from the current node if the new distance is smaller than the previously recorded distan...read more
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Q1. Question based on oops
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Q2. Question based on OS
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Polyfills,html,css basics,js intermediate level

Leetcode medium to hard

Q1. Rain water trapping
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Q2. Bricks and ladder
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Dsa -> questions on trees, linked list, stack, dynamic programming

Coding Rond consisted of 3 questions

Q1. 1. Data structures and algorithms
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Q2. 2. Computer fundamentals
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Q3. Revise all cs fundamentals
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It was 1 hour long and was asked to pass all the test cases.

Q1. System Design with basic of OOP and OS
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