Virtusa Consulting Services Interview Questions, Process, and Tips

Spark architecture is based on a master-slave architecture with a cluster manager to coordinate tasks.

• Spark architecture consists of a driver program that communicates with a cluster manager to coordinate tasks.

• The cluster manager allocates resources and schedules tasks on worker nodes.

• Worker nodes execute the tasks and return results to the driver program.

• Spark supports various cluster managers like YARN, Mesos, and s...read more

There will be 4 stages created in total for the spark job.

• Wide transformations trigger a shuffle and create a new stage.

• Narrow transformations do not trigger a shuffle and do not create a new stage.

• In this case, 3 wide transformations will create 3 new stages and 2 narrow transformations will not create new stages.

• Therefore, a total of 4 stages will be created.

The lifecycle of a coach involves initial training, gaining experience, continuous learning, and mentoring others.

• Initial training to acquire necessary skills and knowledge

• Gaining experience through practical application

• Continuous learning to stay updated with industry trends

• Mentoring others to pass on knowledge and skills

• Transitioning into leadership roles within the organization

I am a detail-oriented KPO Analyst with a strong background in data analysis and research.

• I have a Bachelor's degree in Business Administration with a focus on analytics

• I have experience working with various data analysis tools such as Excel, SQL, and Tableau

• I have a proven track record of delivering high-quality reports and insights to support decision-making

• I am skilled in identifying trends and patterns in data to d

I have 3 years of experience as a KPO Analyst in a financial services company.

• Responsible for analyzing market trends and competitor data

• Created detailed reports and presentations for senior management

• Collaborated with cross-functional teams to improve processes and efficiency

I am a detail-oriented KPO Analyst with a strong background in data analysis and research.

• Experienced in conducting market research and analyzing data to provide valuable insights

• Proficient in using various analytical tools and software such as Excel, SPSS, and Tableau

• Skilled in creating reports and presentations to communicate findings to stakeholders

• Strong problem-solving skills and ability to work effectively in a t

I had to manage a project with a tight deadline and limited resources.

• Prioritized tasks based on importance and urgency

• Communicated effectively with team members to ensure everyone was on the same page

• Negotiated with stakeholders for additional resources or extended deadline if necessary

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