Verizon Interview Questions and Answers for Experienced

It was basic coding to test the Python skills like reading data from local and uploading in cloud then some basic dag related questions

Q1. Clustering and partition difference in data warehousing solutions
Ans. 
Clustering involves grouping similar data together, while partitioning involves dividing data into smaller, manageable sections.
• Clustering is used to group similar data points together based on certain criteria, such as customer segments or product categories.

• Partitioning involves dividing a large dataset into smaller, more manageable sections for easier data retrieval and processing.

• Clustering is often used for data a...read more
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Q2. What are the different approaches to Optimising SQL
Ans. 
Different approaches to optimizing SQL include indexing, query optimization, and database design.
• Use indexing to improve query performance

• Optimize queries by avoiding unnecessary joins and using appropriate functions

• Design the database schema efficiently to reduce redundancy and improve data retrieval speed
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Q3. Spark and it’s architecture
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Q4. Finding the count of Item bought by an customer from Flipkart during a year excluding February
Ans. 
To find the count of items bought by a customer from Flipkart during a year excluding February, you need to aggregate the data and filter out February transactions.
• Aggregate the data by customer and item purchased

• Filter out transactions from February

• Count the number of items bought by each customer
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Q1. Tell me about yourself
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Q2. Can you show me one your recent presentations that you might have done
Ans. 
I recently presented a market research analysis on consumer behavior trends in the tech industry.
• Utilized data from surveys and focus groups to analyze consumer preferences

• Identified key trends in purchasing behavior and brand loyalty

• Presented findings through visual charts and graphs for easy understanding
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Q3. Tell me about yourself apart from your experience
Ans. 
I am a curious and creative individual with a passion for learning and problem-solving.
• I enjoy exploring new technologies and trends in the market research industry.

• I have a strong analytical mindset and attention to detail.

• I am a team player and enjoy collaborating with colleagues on projects.

• I have a background in statistics and data analysis, which helps me in interpreting market research data effectively.
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Q1. Gave a use case like chatbot and asked how would I design it. SQL Technical questions - SCDs , moving averages , data warehousing concepts , query optimization techniques
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Q2. SQL Query about removing duplicates
Ans. 
Learn how to write SQL queries to effectively remove duplicate records from a dataset.
• Use the DISTINCT keyword to select unique records. Example: SELECT DISTINCT column_name FROM table_name;

• Utilize GROUP BY to aggregate data and eliminate duplicates. Example: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name;

• For more control, use a Common Table Expression (CTE) or subquery to identify duplicates. Exampl...read more
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Q1. How do you decide which technology to opt for a specific product?
Ans. 
I evaluate factors such as scalability, compatibility, cost, and user experience to choose the best technology for a product.
• Assess the scalability of the technology to ensure it can handle future growth

• Consider compatibility with existing systems and technologies

• Evaluate the cost of implementing and maintaining the technology

• Prioritize user experience by choosing technology that enhances usability and performance
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Q2. Explain the prioritisation of features? Who's the decision maker?
Ans. 
Prioritisation of features involves evaluating impact, effort, and alignment with business goals. Decision maker varies based on company structure.
• Prioritisation is based on impact on users, business goals, and resources available.

• Effort required to implement the feature is also considered.

• Alignment with overall product strategy and roadmap is crucial.

• Decision maker can be product manager, stakeholders, or cross-functi...read more
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Q3. Take me through the tech stack that your product/app is built on?
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Q4. What's your individual contribution towards making the certain product/feature successful?
Ans. 
I led the development of a new feature that increased user engagement by 30% through data-driven decisions and cross-functional collaboration.
• Conducted user research to identify pain points, leading to the development of a feature that addressed specific user needs.

• Collaborated with engineering and design teams to create a seamless user experience, ensuring the feature was intuitive and easy to use.

• Implemented A/B test...read more
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Q5. As a product manager how do you decide your scope?
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