INCREFF Senior Devops Engineer Interview Questions and Answers

Leet code question medium

Leetcode questions medium

Q1. Design barber shop booking system
Ans. 
Design a barber shop booking system to manage appointments and services.
• Allow customers to book appointments online or through an app

• Include a calendar for customers to choose available time slots

• Integrate payment processing for services

• Send reminders to customers about upcoming appointments

• Allow customers to cancel or reschedule appointments

• Include a feature for customers to leave reviews and feedback

• Provide a dashboa...read more
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Q2. How would you scale it
Ans. 
Scaling a software system involves increasing its capacity to handle more users or data.
• Implementing load balancing to distribute traffic evenly across multiple servers

• Using caching mechanisms to reduce database load

• Optimizing database queries and indexes for faster retrieval

• Horizontal scaling by adding more servers to the system

• Vertical scaling by upgrading hardware resources on existing servers
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Machine coding round where SOLID principles are evaluated for real life use case

Machine coding round.

Q1. Algorithm to calculate top k flight from source to destinaton.
Ans. 
Use Dijkstra's algorithm to find the top k shortest paths from source to destination.
• Implement Dijkstra's algorithm to find the shortest paths from source to all other nodes.

• Store the top k shortest paths found in a priority queue or heap.

• Return the top k shortest paths as the result.
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Peak of element in Array

Q1. DSA - level order traversal, sliding window.
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Q1. Atomic transaction in distributed system
Ans. 
Atomic transactions ensure that all operations in a transaction are completed successfully or none at all in a distributed system.
• Atomic transactions guarantee that all operations within a transaction are either all successful or all rolled back.

• In distributed systems, atomic transactions are crucial for maintaining data consistency across multiple nodes.

• ACID properties (Atomicity, Consistency, Isolation, Durability) a...read more
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Q1. About work background
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Case study for understanding your analytical accumen

Q1. Why do you want to join?
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Q1. Strings related coding question
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Q1. Files, os and db related questions
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Dsa questions asked and java basic questions