ZeMoSo Interview Questions and Answers

Medium Level DSA Questions

Q1. React and Nodejs related questions ( moderate)
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Q1. How would ypu design the apis for an app like Swiggy
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Q1. Simple streams based question
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Q2. Array based algorithm
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It was like MCQs and 2 coding questions. One is on arrays and other is on Url reponse mapping.

Q1. Executor Services
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Q2. Indexes from sql
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Indexes in SQL are used to improve the performance of queries by allowing the database to quickly retrieve data.
• Indexes are created on columns in a table to speed up data retrieval.

• Types of indexes include clustered, non-clustered, unique, and composite indexes.

• Examples of indexes include creating an index on a 'user_id' column in a 'users' table.

• Indexes can be created using the CREATE INDEX statement in SQL.
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Q1. Coding problem on String
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Q2. Saga pattern on data consistency
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Saga pattern is used to maintain data consistency in distributed systems by breaking down transactions into smaller, independent steps.
• Saga pattern involves breaking down a transaction into a series of smaller steps or sub-transactions.

• Each step in the saga is independent and can be rolled back if needed.

• If a step fails, compensating transactions can be executed to undo the changes made by previous steps.

• Saga pattern h...read more
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Q1. Discussion on the work timings
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Q2. Basic questions on procedures
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Medium DSA question+ SQL+ mcq

Q1. Question related to backend concept
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Q2. Databases, authorisation mechanisms
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