SAS Senior Software Developer Interview Questions and Answers

Q1. Mvc arch & life cycle and basic oops & experianced based
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Q2. All sql practical questions
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Q1. Communication between microservices
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Communication between microservices is typically done through APIs, message queues, or event-driven architecture.
• Use RESTful APIs for synchronous communication between microservices

• Implement message queues like RabbitMQ or Kafka for asynchronous communication

• Utilize event-driven architecture with tools like Apache Kafka or AWS SNS/SQS

• Consider gRPC for high-performance communication between microservices
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Q2. Collectionin java
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Q1. How you will takle esculation
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I will tackle escalations by first understanding the issue, prioritizing tasks, communicating effectively, and seeking help from senior team members if needed.
• Understand the root cause of the escalation

• Prioritize tasks based on urgency and impact

• Communicate effectively with stakeholders

• Seek help from senior team members if needed
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Q1. Redux and hooks concepts
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Q2. Html5 and css3 concepts
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Q1. Azile methodology and javascript and react advanced concepts
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Q1. What is MVC and explain how it works?
Ans. 
MVC stands for Model-View-Controller, a software design pattern that separates the application into three main components.
• Model: Represents the data and business logic of the application.

• View: Represents the UI components of the application.

• Controller: Acts as an intermediary between Model and View, handling user input and updating the Model accordingly.

• MVC helps in organizing code, improving maintainability, and promo...read more
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Q2. What is Index Fragmentation in SQL
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Index fragmentation in SQL occurs when the logical order of pages in an index does not match the physical order in the data file.
• Index fragmentation can lead to decreased query performance as the database engine has to scan more pages to retrieve data.

• Fragmentation can be caused by frequent insertions, deletions, or updates on the indexed columns.

• Rebuilding or reorganizing indexes can help reduce fragmentation and impr...read more
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Q3. Explain about myself
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Q1. About My Company and Project
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Q2. Asked to write SQL query to find the 2nd highest salary of an employee
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Q1. Microservice Architecture
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Q2. Rest api vs soap api
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REST API is lightweight, flexible, and widely used, while SOAP API is more rigid and heavy.
• REST API uses standard HTTP methods like GET, POST, PUT, DELETE, while SOAP API uses XML for communication.

• REST API is stateless and can be cached, making it faster, while SOAP API is stateful and requires more bandwidth.

• REST API is easier to implement and understand, while SOAP API has more built-in security features.

• Examples: R
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Questions from Resume, solving code snippets, DSA Algo

Q1. Explain GCD, Core Data, Higher Order Functions, ARC
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GCD, Core Data, Higher Order Functions, ARC are key concepts in iOS development.
• GCD (Grand Central Dispatch) is a technology for managing concurrent operations.

• Core Data is a framework for managing the model layer objects in an application.

• Higher Order Functions are functions that operate on other functions, taking them as arguments or returning them.

• ARC (Automatic Reference Counting) is a memory management technology
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Q2. Weak Unowned, iOS App States
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Q1. Explain react life cycle
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