Dun & Bradstreet Interview Questions, Process, and Tips

Q1. Explain how you read messages from google cloud pusub
Ans. 
Reading messages from Google Cloud Pub/Sub involves creating a subscription and pulling messages from the subscription.
• Create a subscription to a Google Cloud Pub/Sub topic

• Use the subscription to pull messages from the topic

• Process the messages received from the subscription
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Q1. Arraylist set and oops coding related questions actually u need to write the code
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Q2. Questions related to manual and API
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Based on management & job details

Q1. Job details along with management
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Q1. Some basic technology questions on Java and Springboot
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Q2. Advance JAVA8 + related questions on newer version features like Lambdas and the advance questions on Springboot, CI/CD, GCP and Agile and Jira - if your concepts are strong you'll find it easy to medium.
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Q1. Behavioral and process specific questions
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Q2. Asked me to design and propose implementation through CQRS through a scenario based Use case which kept moving in the direction of CRQS and had to pitch Kafka for streaming and of avro and parquet files. H...read more
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Q1. Wasteof time with repetitive questions on expectation, any scope of negotiation, offers in hand, mandatory Hyderabad office tagging so no work from home.
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Q2. Describe a normal day, current fitment in the team, expectations from d&b
Ans. 
A normal day involves collaborating with team members, working on fitment projects, and meeting d&b's expectations.
• Start the day by checking emails and prioritizing tasks

• Attend team meetings to discuss ongoing fitment projects

• Collaborate with team members to brainstorm ideas and solutions

• Work on fitment projects by analyzing data and creating reports

• Communicate regularly with d&b to ensure alignment with their expectat
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Q1. Are you open to working past office hours?
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Q2. Can you operate on non working days?
Ans. 
Yes, I am willing to operate on non working days if necessary to meet sales targets or assist with urgent matters.
• I am willing to work on non working days if it is required to meet sales targets or assist with urgent matters

• I understand the importance of flexibility in the sales role and am committed to achieving results

• I have previous experience working on weekends or holidays to close important deals or meet deadline
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Q1. Linear Regressions, Logistic Regressions, Random Forest Basic Concepts
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Q2. What is Big Data and how companies use it?
Ans. 
Big Data refers to large and complex data sets that traditional data processing applications are unable to handle.
• Companies use Big Data to gain insights into customer behavior, market trends, and operational efficiency.

• Big Data is used in various industries such as healthcare, finance, retail, and transportation.

• Companies use tools like Hadoop, Spark, and NoSQL databases to store, process, and analyze Big Data.

• Big Dat...read more
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Q3. What is Bayes Theorem?
Ans. 
Bayes Theorem is a mathematical formula that calculates the probability of an event based on prior knowledge or information.
• Bayes Theorem is named after Thomas Bayes, an 18th-century British mathematician.

• It is used to update the probability of an event occurring based on new evidence or information.

• The theorem involves conditional probabilities, which are the probabilities of an event given that another event has alre...read more
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