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02: AWS Identity & Access Management (i.e. IAM) interview Q&As

Q1. What is IAM? A1. IAM stands for Identity & Access Management. AWS Identity and Access Management (IAM) is a web service that helps you securely control access to AWS resources. You use IAM to control who is authenticated (i.e. … Read more ›...

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03: 7+ Java architectural patterns interview Q&As – Part 3

Continuation of Java architecture interview Q&A with integration styles & architecture diagrams – part 1 Q3. Can you discuss some of the high level architectures you are experienced with? A3. Be prepared for a white board session on architectures, especially the bird’s eye view of the last application you had...

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03: How would you go about designing an online shopping cart?

This question is a very popular white board session question for both Java architects and experienced JEE Developers. You need to draw on your experience to tackle this question as there are no right or wrong answers. These high level diagrams and summary will help you refresh your memory. Q....

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04: How to go about designing a medium size JEE app?

A very popular open-ended question to judge your Java/JEE experience. Q. How would you go about designing a medium sized JEE application? A. Don’t start with 3-tier architecture, logical layers, Spring/Hibernate framework etc. The phases of designing any systems are: Requirements Gathering => … Read more ›...

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05: ETL & ELT architecture interview Q&As

Q1. What is an ETL process? A1. ETL is a architectural style, and it stands for Extract, Transform and Load. Extract does the process of reading data from an input data source like file, database, etc. … Read more ›...

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08: Q71 – Q75 ETL/ELT on BigData Interview Q&As

Q71. Can ETL in traditional data management (E.g. RDBMs) be migrated to EDH (i.e. Enterprise Data Hub) powered by Hadoop eco system? A71. Yes, it can be migrated, but it is not a direct & straight forward migration as there is a mismatch in underpinning concepts & … Read more...

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1. Asynchronous processing in Java real life examples – part-1

The scenario based questions are very popular with the job interviewers, and some scenario based questions are related to decoupling and asynchronous (aka non-blocking) processing in Java with message queues/topics, database tables where one process inserts data and another process consumes the inserted data, and Future objects in Java multi-threading....

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