PureSoftware Senior Software Engineer Interview Questions and Answers for Experienced

A bug is a coding error, while a defect is a deviation from the expected behavior.

• A bug is a mistake made by a developer during the coding phase.

• A defect is a flaw in the software that causes it to behave differently than intended.

• Bugs are usually caused by syntax errors, logical errors, or incorrect implementation.

• Defects can be caused by bugs, but also by design flaws, requirements misunderstandings, or environmental...read more

STLC stands for Software Testing Life Cycle which consists of several phases.

• STLC is a process followed by software testers to ensure the quality of the software.

• The phases of STLC are - Requirement Analysis, Test Planning, Test Case Development, Test Environment Setup, Test Execution, and Test Closure.

• Each phase has its own set of objectives and deliverables.

• STLC helps in identifying defects early in the software deve...read more

Compatibility testing checks if software works on different platforms, while cross-browser testing checks if it works on different browsers.

• Compatibility testing ensures software works on different operating systems, hardware, and software configurations.

• Cross-browser testing ensures software works on different web browsers and their versions.

• Compatibility testing is broader in scope than cross-browser testing.

• Examples...read more

Black Box Testing includes functional, non-functional, regression, usability, and exploratory testing.

• Functional Testing: verifies the functionality of the software

• Non-functional Testing: verifies the non-functional aspects like performance, security, etc.

• Regression Testing: verifies that changes made to the software do not affect the existing functionality

• Usability Testing: verifies the ease of use of the software

• Expl...read more

Testing challenges include lack of resources, time constraints, and communication issues. Overcoming them requires proper planning and collaboration.

• Lack of resources, such as hardware or software, can hinder testing efforts

• Time constraints may lead to rushed testing and incomplete coverage

• Communication issues between team members can result in misunderstandings and errors

• Proper planning and collaboration can help over...read more

Documentation is important for test artefacts to ensure traceability, repeatability, and knowledge transfer.

• Documentation helps to ensure that tests can be traced back to their original requirements and objectives.

• It also enables tests to be repeated consistently, reducing the risk of errors and increasing confidence in the results.

• Documentation also facilitates knowledge transfer between team members, ensuring that ev...read more

Things to keep in mind when raising a bug/defect

• Provide a clear and concise description of the bug

• Include steps to reproduce the bug

• Provide screenshots or videos if possible

• Assign the bug to the appropriate team member

• Set the priority and severity of the bug

• Track the bug until it is resolved

Severity refers to the impact of a bug on the system while Priority refers to the order in which bugs should be fixed.

• Severity is the measure of how much a bug affects the system's functionality

• Priority is the measure of how soon a bug should be fixed

• Severity can be classified as high, medium, or low

• Priority can be classified as high, medium, or low

• A high severity bug may not necessarily have a high priority

• For example...read more

TSQL query optimization techniques and differences

• TSQL query optimization techniques include index optimization, query rewriting, and statistics optimization

• Query optimization aims to improve query performance by reducing execution time and resource usage

• Query optimization can be done at different levels such as database, table, and query level

• Query optimization can also involve choosing the best execution plan based o...read more