Commonwealth Bank of Australia, India Interview Questions, Process, and Tips

Q1. Cloud migration steps and challenges.
Ans. 
Cloud migration involves planning, executing, and optimizing the process of moving data, applications, and workloads to a cloud environment.
• Assess current infrastructure and applications to determine what can be migrated to the cloud

• Choose the right cloud service provider based on requirements and budget

• Develop a migration plan including timelines, resources, and potential risks

• Execute the migration in phases to minimi...read more
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Q2. Technology stack of product
Ans. 
The technology stack of the product includes Java, Spring Boot, Angular, and MySQL.
• Java

• Spring Boot

• Angular

• MySQL
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Q3. Which DB were used in your system?
Ans. 
We used MySQL and MongoDB databases in our system.
• MySQL was used for structured data storage

• MongoDB was used for unstructured data storage
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Q4. How did your execute data pipelines?
Ans. 
I executed data pipelines by designing the workflow, implementing data transformations, scheduling jobs, and monitoring performance.
• Designed the workflow for data pipelines to ensure efficient data processing

• Implemented data transformations using tools like Apache Spark or Python libraries

• Scheduled jobs to run at specific intervals for automated data processing

• Monitored performance of data pipelines to identify bottlen
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Q5. What is team velocity?
Ans. 
Team velocity is a measure of the amount of work a team can complete in a sprint.
• Team velocity is calculated by summing up the story points completed in a sprint.

• It helps the team understand their capacity and plan future sprints accordingly.

• Velocity is not a measure of productivity but rather a guide for planning and forecasting.

• For example, if a team completes 30 story points in a sprint, their velocity is 30.
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Q1. Java difference between Finally, Finalize
Ans. 
Finally is a block of code that always executes, while Finalize is a method used for cleanup before an object is garbage collected.
• Finally block is used in exception handling to ensure certain code is always executed, regardless of whether an exception is thrown or not.

• Finalize method is called by the garbage collector before an object is reclaimed.

• Finally block is used in try-catch-finally blocks, while Finalize metho...read more
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Q2. Programming question - Find second largest string from a given sentence
Ans. 
Find the second largest string from a given sentence
• Split the sentence into an array of strings

• Sort the array based on string length

• Return the second last element in the sorted array
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Q3. Difference between AWS cloud front and cloud formation
Ans. 
AWS CloudFront is a content delivery network (CDN) service, while AWS CloudFormation is an infrastructure as code service.
• CloudFront is used to deliver content to end users with low latency and high data transfer speeds.

• CloudFormation is used to automate the deployment of infrastructure resources in a repeatable and predictable manner.

• CloudFront is a CDN service that caches content at edge locations to reduce latency, ...read more
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Q4. How to improve performance in react js ?
Ans. 
To improve performance in React JS, optimize rendering, minimize re-renders, use virtualization, lazy loading, code splitting, and memoization.
• Optimize rendering by using shouldComponentUpdate or React.memo for functional components

• Minimize re-renders by using PureComponent or memoization techniques like useMemo or useCallback

• Use virtualization for long lists or tables to render only the visible items

• Implement lazy loa...read more
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Q1. Detailed project questions
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Q2. Explain completed gen ai project
Ans. 
Developed a generative AI model to create realistic images of fictional characters.
• Used GANs (Generative Adversarial Networks) to generate new images based on existing data.

• Trained the model on a dataset of character images from various sources.

• Implemented techniques like style transfer to enhance the diversity and creativity of generated images.

• Evaluated the model's performance based on image quality metrics and user
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Q1. Pusedo code explain and improve
Ans. 
Pseudo code explanation and improvement for better understanding and efficiency
• Pseudo code is a high-level description of a computer program or algorithm

• It uses natural language mixed with programming language-like syntax

• Improvements can include adding comments for clarity, using proper indentation, and simplifying complex logic

• Example: Original pseudo code - 'if x > 5 then print 'Hello World' else print 'Goodbye'

• Impro...read more
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Q2. Explain framework
Ans. 
A framework is a set of guidelines, libraries, and tools used to develop and maintain software applications.
• Provides structure and organization for code

• Promotes code reusability

• Facilitates automation and testing

• Examples: Selenium for web automation, JUnit for unit testing
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Agile and day to day working
Stakeholders and conflict management

Q1. Salary and benefits
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Q2. Ways of working
Ans. 
Effective ways of working include clear communication, collaboration, prioritization, and continuous improvement.
• Clear communication is essential for sharing information and avoiding misunderstandings.

• Collaboration helps team members work together towards common goals.

• Prioritization ensures that tasks are completed in the most efficient order.

• Continuous improvement involves learning from mistakes and finding ways to wo...read more
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