Teleperformance Interview Questions and Answers

We used a combination of black box and white box testing techniques in our project.

• Black box testing: Testing the functionality of the software without knowledge of its internal structure.

• White box testing: Testing the internal structure and implementation of the software.

• Example: For black box testing, we created test cases based on the software requirements and validated the expected outputs. For white box testing, we performed code reviews and used techniques like statemen...read more

Software development life cycle (SDLC) is a process used to design, develop, test, and maintain software.

• SDLC is a systematic approach to software development.

• It consists of several phases such as requirements gathering, design, coding, testing, deployment, and maintenance.

• Each phase has specific activities and deliverables.

• SDLC models include Waterfall, Agile, and DevOps.

• Example: In the requirements gathering phase, the software requirements are collected from stakeholders.

The syntax of inner join is used to combine rows from two or more tables based on a related column between them.

• Use the SELECT statement to specify the columns you want to retrieve from the tables.

• Use the INNER JOIN keyword followed by the table names and the ON keyword to specify the join condition.

• The join condition is typically a comparison between the related columns in the tables.

• Example: SELECT column1, column2 FROM table1 INNER JOIN table2 ON table1.column = table2.col...read more

Defect life cycle is the process of identifying, reporting, fixing, and verifying software defects.

• Defect is identified during testing or by users

• Defect is reported with detailed information

• Defect is assigned to a developer for fixing

• Developer fixes the defect and marks it as resolved

• Defect is retested to verify if it is fixed

• If the defect is not fixed, it is reopened

• Once verified, the defect is closed

Software testing life cycle is a process that defines the various stages involved in testing a software application.

• Software testing life cycle consists of different phases such as requirement analysis, test planning, test design, test execution, and test closure.

• During the requirement analysis phase, the testing team reviews the requirements and identifies testable features.

• In the test planning phase, the test strategy, test plan, and test cases are prepared.

• Test design phas...read more

There are various types of testing in software development, including unit testing, integration testing, system testing, and acceptance testing.

• Unit testing: Testing individual components or units of code to ensure they function correctly.

• Integration testing: Testing the interaction between different components or modules to ensure they work together as expected.

• System testing: Testing the entire system or application to verify its compliance with specified requirements.

• Accep...read more

Different types of joins in SQL include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables

• Left join returns all rows from the left table and the matching rows from the right table

• Right join returns all rows from the right table and the matching rows from the left table

• Full outer join returns all rows from both tables, including unmatched rows