Protiviti Consultant Interview Questions and Answers

Microservices architecture is a design approach where an application is composed of small, independent services that communicate with each other.

• Each service is responsible for a specific function or feature

• Services are loosely coupled and can be developed, deployed, and scaled independently

• Communication between services is typically done through APIs

• Each service can be developed using different technologies or program...read more

Implementing SQS and SNS in AWS cloud involves creating queues and topics, setting up permissions, and configuring subscriptions.

• Create an SQS queue and configure its settings

• Create an SNS topic and configure its settings

• Set up permissions to allow SQS to send messages to SNS

• Configure subscriptions to connect the SQS queue to the SNS topic

Considerations before migrating monolith into microservices

• Understand the current monolith architecture and dependencies

• Identify the boundaries for microservices and plan the decomposition

• Ensure proper testing and monitoring strategies are in place

• Address data management and consistency challenges

• Prepare for potential performance overhead and increased complexity

Implement API security using token-based authentication and authorization

• Use token-based authentication like JWT (JSON Web Tokens)

• Implement custom authentication and authorization logic in the API endpoints

• Utilize API keys for access control and rate limiting

• Implement OAuth for secure authorization and delegation of access

API gateway is a server that acts as an API front-end, receiving API requests, enforcing throttling and security policies, passing requests to the back-end service, and then passing the response back to the requester.

• API gateway acts as a single entry point for all API requests

• It can handle tasks like authentication, authorization, rate limiting, and caching

• Examples of API gateways include Amazon API Gateway, Apigee, a

While loop exceptions are errors that occur during the execution of a while loop.

• Common while loop exceptions include infinite loops, where the loop never terminates.

• Another exception is when the loop condition is never met, causing the loop to never execute.

• Handling exceptions in while loops can be done using try-catch blocks to catch and handle errors.