Cognizant Production Support Engineer Interview Questions and Answers

A good coding test will measure candidate capacity for problem solving skills and understanding of coding

Aptitude test plays important role of understanding the knowledge of the person

Q1. Tell about yourself , what are your strengths?
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Q2. What do you know about our company?
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Q3. What are your weakness?
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Q1. Accounts Receivables. Flow
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Q2. Hikbbhuu huijehbe iorjenfe
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Q1. Self introduction
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Q2. Work experience
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Q3. Which department are u working
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Q4. Timings and salary
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Q1. Name and experience and quality and checking etc
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Q2. How can handle ur problem and team work
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Q3. Times and salary
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About current project and roles and resposibilities etc

Q1. SQL COMPLEX QUERIES and PL SQL, CRON JOBS, SERVICE NOW
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Q2. What are difference between SQL and PL SQL
Ans. 
SQL is a standard language for managing relational databases, while PL/SQL is a procedural language extension for SQL.
• SQL is a standard language for querying and manipulating data in relational databases.

• PL/SQL is a procedural language extension for SQL, allowing for more complex programming logic.

• SQL is used for data manipulation and retrieval, while PL/SQL is used for writing stored procedures and functions.

• SQL state...read more
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Q3. Explain types of joins?
Ans. 
Types of joins are used in databases to combine rows from two or more tables based on a related column between them.
• Inner Join: Returns rows when there is at least one match in both tables.

• Left Join (or Left Outer Join): Returns all rows from the left table and the matched rows from the right table.

• Right Join (or Right Outer Join): Returns all rows from the right table and the matched rows from the left table.

• Full Join...read more
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Q4. Diffence between correlated and non correlated subquary?
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Correlated subquery refers to a subquery that is dependent on the outer query, while non-correlated subquery can be executed independently.
• Correlated subquery is executed for each row processed by the outer query, while non-correlated subquery is executed only once.

• Correlated subquery is slower in performance compared to non-correlated subquery.

• Example: SELECT * FROM table1 WHERE column1 = (SELECT MAX(column2) FROM tab
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Q5. Find departement wise total sal?
Ans. 
To find department wise total salary, sum up the salaries of employees in each department.
• Group employees by department

• Calculate total salary for each department

• Display department wise total salary
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Q1. Online interview
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Q2. Self introduction
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Q1. Past project experience
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Q1. Salary discussion
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