Virtusa Consulting Services Senior QA Analyst Interview Questions and Answers

Functional testing is a type of software testing where the system is tested against the functional requirements/specifications.

• Tests the functionality of the software application

• Focuses on what the system does

• Verifies that the system behaves as expected based on the requirements

• Does not concern with the internal code structure

• Examples: testing login functionality, search feature, data validation

Datamining is the process of analyzing large datasets to discover patterns, trends, and insights.

• Datamining involves extracting useful information from large datasets

• It uses various techniques such as machine learning, statistical analysis, and data visualization

• Examples include identifying customer buying patterns, predicting stock market trends, and detecting fraudulent activities

Challenges in ETL include data quality issues, scalability, performance bottlenecks, and complex transformations.

• Data quality issues such as missing or incorrect data can impact the accuracy of the ETL process.

• Scalability challenges arise when dealing with large volumes of data, requiring efficient processing and storage solutions.

• Performance bottlenecks can occur due to inefficient data extraction, transformation, or ...read more