Vcare Technology Senior Software Developer Interview Questions and Answers

Q1. Past experiences
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Q1. Basics of javascript and one live coding
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Q1. Basics of javascript and one live coding
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Q1. What is ETL, and can you explain it in a structured manner?
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ETL stands for Extract, Transform, Load. It is a process used to extract data from various sources, transform it into a consistent format, and load it into a target database or data warehouse.
• Extract: Involves extracting data from different sources such as databases, files, APIs, etc.

• Transform: Data is cleaned, validated, and transformed into a consistent format suitable for analysis.

• Load: The transformed data is loade...read more
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Q2. What is the correct structure of a DBMS diagram?
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The correct structure of a DBMS diagram includes entities, attributes, relationships, and keys.
• Entities represent the main objects in the database (e.g. Customer, Product).

• Attributes are characteristics of entities (e.g. CustomerID, ProductName).

• Relationships show how entities are related to each other (e.g. one-to-many, many-to-many).

• Keys uniquely identify each record in a table (e.g. Primary Key, Foreign Key).
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Q1. Strengths,weakness,why do we hire you, what are your hobbies
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Q1. Questions on React JS along with java
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Q1. Basic full stack related questions
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Q2. Javascript related questions
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Q1. System design questions
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Q2. Rate limit design
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Rate limit design involves setting limits on the number of requests a user can make within a certain time frame to prevent abuse or overload.
• Consider the type of requests being made and the impact of rate limiting on user experience.

• Implement rate limiting at different levels such as API endpoints, user accounts, or IP addresses.

• Use tokens or tokens buckets to track and enforce rate limits.

• Provide clear error messages ...read more
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Q1. Salary and benefits discussion
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Q1. Pivot columns in sql
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Pivoting columns in SQL involves transforming rows into columns to display data in a different format.
• Use the PIVOT keyword in SQL to pivot columns

• Specify the columns to pivot on and the values to display in the new columns

• Aggregate functions like SUM, AVG, COUNT can be used with PIVOT

• Example: SELECT * FROM table_name PIVOT (SUM(value_column) FOR pivot_column IN ('value1', 'value2', 'value3'))
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Q2. Slow changing dimensions
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Q3. Dynamic rankx top 3
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Q4. Field parameters
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Q5. Stored procedures
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Q1. How does consumer, producer work in kafka
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Consumers read data from topics, while producers write data to topics in Kafka.
• Consumers subscribe to topics to read messages from them

• Producers publish messages to topics for consumers to read

• Consumers can be part of a consumer group to scale out consumption

• Producers can specify key for messages to control partitioning
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Q1. Role check
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Q2. Tech stackP
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Q1. Project based questions
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Q2. AWS related questions
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Q1. Basic JavaScript and React.js questions
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Q2. Questions on functions, hooks and DOM
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Q3. Questions on SSR
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Q4. Questions on strings and arrays
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