ivy Senior Data Architect Interview Questions and Answers

Q1. Clustering in cassendra
Ans. 
Clustering in Cassandra involves grouping together multiple nodes to improve performance, scalability, and fault tolerance.
• Clustering is used to distribute data across multiple nodes in a Cassandra cluster.

• It helps in achieving high availability and fault tolerance by replicating data across nodes.

• Cassandra uses consistent hashing to determine which node will store a particular piece of data.

• Data is partitioned into sm...read more
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Q2. Cloud Deployment strategies
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Q1. What Java class loaders?
Ans. 
Java class loaders are responsible for loading classes during runtime.
• Java class loaders are responsible for loading classes during runtime.

• There are three types of class loaders: Bootstrap, Extension, and System.

• Custom class loaders can also be created to load classes from non-standard sources.

• Class loaders follow a delegation model where they first check if a class has already been loaded before attempting to load it...read more
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Q2. Questions on Microservices patterns?
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Q1. Explain architecture of your last project ?
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Q2. Cloud technologies you are familiar with?
Ans. 
I am familiar with AWS, Azure, and Google Cloud Platform.
• Experience with AWS services such as EC2, S3, Lambda, and RDS

• Familiarity with Azure services like Virtual Machines, Blob Storage, and Functions

• Knowledge of Google Cloud Platform services such as Compute Engine, Cloud Storage, and Cloud Functions
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On the topic of wfh vs wfo

Q1. Logic for leap year
Ans. 
A leap year is a year that is divisible by 4, except for years that are divisible by 100 but not by 400.
• Leap year is divisible by 4

• Exception: Years divisible by 100 but not by 400 are not leap years

• Example: 2000 is a leap year because it is divisible by 400
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Q2. Logic for fibonocee series
Ans. 
Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
• Start with 0 and 1 as the first two numbers in the series

• Add the previous two numbers to get the next number in the series

• Repeat this process to generate the Fibonacci series
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Q3. Swap two number without 3rd variable
Ans. 
Swap two numbers without using a third variable
• Use bitwise XOR operation to swap two numbers without using a third variable

• Example: a = 5, b = 10. a = a XOR b, b = a XOR b, a = a XOR b

• After swapping: a = 10, b = 5
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Q1. Biometric attitude questions
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Q1. How to handle security in Kafka?
Ans. 
Security in Kafka can be handled through authentication, authorization, encryption, and SSL/TLS.
• Implement authentication mechanisms like SASL or SSL for secure communication between clients and brokers.

• Set up ACLs (Access Control Lists) to control access to topics and resources.

• Enable encryption using SSL/TLS to secure data in transit.

• Use tools like Confluent Security Plugins for additional security features.

• Regularly ...read more
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Q2. Benefits of Microservices?
Ans. 
Microservices offer benefits such as scalability, flexibility, resilience, and easier maintenance.
• Scalability: Microservices allow for individual components to be scaled independently, leading to better resource utilization.

• Flexibility: Each microservice can be developed, deployed, and updated independently, allowing for more flexibility in the development process.

• Resilience: If one microservice fails, it does not brin...read more
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Q3. Have you done any customisation in spring-boot?
Ans. 
Yes, I have done customisation in spring-boot.
• Implemented custom error handling by extending ResponseEntityExceptionHandler

• Created custom annotations for validation

• Configured custom logging using Logback
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Had to solve couple of problems online

Q1. Programming, Java, Spring, design patterns, database, messaging, tools
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Q1. Application design, problem faced in different projects and solutions, General awareness of frameworks and tools.
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Q1. Salary Negotiation, company policies, insurance, joining date
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