Novac Technology Solutions Senior Technical Engineer Interview Questions and Answers

Q1. Find the last 2 row in sql?
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Q1. Clustering in cassendra
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Clustering in Cassandra involves grouping together multiple nodes to improve performance, scalability, and fault tolerance.
• Clustering is used to distribute data across multiple nodes in a Cassandra cluster.

• It helps in achieving high availability and fault tolerance by replicating data across nodes.

• Cassandra uses consistent hashing to determine which node will store a particular piece of data.

• Data is partitioned into sm...read more
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Q2. Cloud Deployment strategies
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Q1. Transaction in Spring Boot
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Transactions in Spring Boot help manage database operations as a single unit of work.
• Transactions ensure ACID properties (Atomicity, Consistency, Isolation, Durability) for database operations.

• Use @Transactional annotation to mark a method as transactional.

• Transactions can be managed programmatically using TransactionTemplate.

• Rollback can be triggered manually in case of exceptions.

• Spring Boot supports both declarative
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Q2. Java Array and problem solving
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Number of islands in a matrix

Design data recovery system

Q1. Questions were mostly around system design, you will be given a case like a stock system and specific use case is asked to design end to end from UI to backend.
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Q2. Some of the system debugging/performance improvement questions are asked from both UI and backend.
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20 questions on logical and mathematical

Q1. Puzzles and coding questions
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DP, Graphs, Arrays, Slidung window

Q1. Introduce yourself
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Q2. Tell me about yourself
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