Online Systems Interview Questions and Answers

Q1. Call flow 4G 5G
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Q2. Troubleshooting of subscriber issues
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Q1. PCRF AND CLOUD INFRASTRUCTURE
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Q2. Telecommunication knowledge
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Q1. Could you elaborate on your roles and responsibilities in your previous employment?
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Q2. What was your role in the project, specifically related to data transformation and dashboard creation?
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Q3. How do you optimize and manage large datasets, and what data sources do you utilize to obtain this data?
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Q4. Guesstimates like how many traffic signals are there in Noida.
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Q5. The interviewer asked SQL questions related to window functions, joins, and advanced aggregations, such as running sum and rolling sum.
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Q1. Second round is also a technical round and similar to first round . Medium to high level sql questions and questions related to the project you're working on and Guesstimates will be asked by the interview...read more
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Q1. Project manager will take the third round interview and inquire about your knowledge of the company, and some technical and scenario-based questions related to decision-making and problem-solving approach.
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Q1. Final round will be an HR round.
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Assignments in marketing and sales involve processes related to product development, technology, and service taxation, as well as the enhancement of listening skills and other developmental processes beyond the same assignments.

Q1. What is the marketing What is the tax What are good and service tax
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Q2. What are good and service tax
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Q3. What is theDeveploment skills
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Q4. How is skills and service
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Q5. What istha markating skills
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Q1. Asked about Dotnet Core Questions about Program.cs file use case, DI, Services, Architectural patterns, and jumped to Linq complex queries and SQL queries. Before that Deep analysis of background work
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Q2. Use of Program.cs
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Q3. Middleware and Services
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Q4. Dependency Injection
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Q5. Authentication & Authorization
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Q1. Basic techno managerial questions on tech you worked on work, interests, challenges you faced. Was fairly short.
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Initially had a string based coding problem. Then was asked technical questions and then had a small break before doing system design with same interviewer for building book my show system and db schema.

Q1. Had a discussion with hiring manager on expectations, salary and growth.
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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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