Publicis Senior Software Engineer Interview Questions and Answers

Q1. Question based on your experience. Mine was mostly design questions on AWS and how to use try and catch
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Q2. Javascript using async/await with try catch block
Ans. 
Using async/await with try catch block in Javascript
• Use async keyword before the function declaration to make it asynchronous

• Use await keyword before the function call to wait for the promise to resolve

• Wrap the async/await code in a try catch block to handle errors
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Q1. Technical with design questions on web technology
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MCQs on hdfs, sql and spark. One data structures coding test

Q1. Kafka architecture
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Q2. HDFS namenode features
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Q1. Explain oops concepts, difference b/w abstraction and interface,MVC architecture,stored procedure,joins
Ans. 
OOPs concepts, abstraction vs interface, MVC architecture, stored procedures, joins
• OOPs concepts include inheritance, polymorphism, encapsulation, and abstraction

• Abstraction is hiding the implementation details while interface is a contract that defines the methods that a class must implement

• MVC architecture separates the application into Model, View, and Controller components for better organization and maintenance

• Sto...read more
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SQL queries, ddl,dml TCL commands, primary key and foreign key differences,what is composite key,hash table in c#,generics in c#.

Q1. Salary discussion,
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Q1. Pivot columns in sql
Ans. 
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. Your tech related questions
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Q1. Oops concepts, angular, SQL, design patterns questions
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Q1. Scenario based technical questions design patterns n real world problems
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Q1. Casual discussion on compensation
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