Infosys Senior Software Engineer Interview Questions and Answers

Reverse an array of strings

• Create a new array and iterate through the original array in reverse order, adding each element to the new array

• Alternatively, swap elements from the beginning and end of the array until reaching the middle

Joins are used to combine rows from two or more tables based on a related column between them.

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table.

• ...read more

Scrum roles are the key positions in a Scrum team responsible for different aspects of the project.

• Product Owner: Represents the stakeholders and defines the product vision.

• Scrum Master: Facilitates the Scrum process and ensures adherence to Scrum principles.

• Development Team: Self-organizing group responsible for delivering the product increment.

• Stakeholders: Individuals or groups with an interest in the project's...read more

A final variable in Java is a variable that cannot be reassigned once it has been initialized.

• Final variables are declared using the 'final' keyword.

• They can be assigned a value only once.

• Final variables are often used to represent constants or values that should not be changed.

• They can be declared at the class, method, or block level.

• Final variables can be used in method parameters, local variables, instance vari...read more

Final variables in programming are constants that cannot be reassigned after their initial assignment.

• In Java, a final variable is declared using the 'final' keyword, e.g., 'final int x = 10;'.

• Once a final variable is assigned, it cannot be changed, e.g., 'x = 20;' will cause a compilation error.

• Final variables can be used for constants, like 'final double PI = 3.14;'.

• In classes, final variables can be used to def...read more

Boomi Atomsphere is a cloud-based integration platform that allows businesses to connect applications, data, and devices across on-premises and cloud environments.

• Integration platform for connecting applications, data, and devices

• Cloud-based solution for on-premises and cloud environments

• Supports API management, data integration, and workflow automation

• Provides pre-built connectors for popular applications and sys...read more

Boomi document types include XML, JSON, flat file, and database record.

• XML

• JSON

• Flat file

• Database record

Performance testing ensures software meets speed, stability, and scalability requirements.

• Performance testing identifies bottlenecks and measures response time, throughput, and resource utilization.

• It helps optimize system performance, improve user experience, and prevent crashes under high load.

• Examples include load testing, stress testing, and endurance testing.

• Performance testing should be conducted throughout ...read more