EPAM Systems Interview Questions and Answers

Q1. Technical questions about Terraform, Service Endpoint, Private Endpoint, AKS
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Q2. Write Powershell Script
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Best practices for writing PowerShell scripts
• Use clear and descriptive variable names

• Comment your code to explain complex logic

• Handle errors gracefully with try/catch blocks

• Use functions to modularize your script

• Avoid hardcoding values whenever possible
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Q3. How to create a Private Endpoint for Azure Key Vaults
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To create a Private Endpoint for Azure Key Vaults, you need to configure a private link service.
• Navigate to the Azure portal and search for 'Key Vaults'.

• Select the Key Vault you want to create a Private Endpoint for.

• In the Key Vault settings, go to 'Private endpoint connections' and click on 'Add'.

• Choose the subscription, resource group, and private DNS zone for the Private Endpoint.

• Review and create the Private Endpoi...read more
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Q4. Tell me the Network Configuration of AKS, what options we have during creation and how it is managed.
Ans. 
AKS allows for network configuration during creation and provides options for managing it.
• During creation of AKS, network configuration options include specifying virtual network, subnet, and network policies.

• Network configuration can be managed through Azure portal, Azure CLI, or ARM templates.

• AKS supports network policies like Azure CNI, Kubenet, and Calico for network security and isolation.

• Network configuration can...read more
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Q5. More detailed questions about AKS
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Q6. Ansible related questions
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Questions on Python: 5 different simple python coding questions

Q1. Docker,Kubernetes,Terraform, Python,Cloud
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Q1. Managerial and technical questions in depth
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Q1. Technical MCQ Questions on react
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Q1. Using hooks in react
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React hooks allow functional components to manage state and side effects, enhancing code reusability and readability.
• useState: Manages state in functional components. Example: const [count, setCount] = useState(0);

• useEffect: Handles side effects like data fetching. Example: useEffect(() => { fetchData(); }, []);

• Custom Hooks: Create reusable logic. Example: function useFetch(url) { /* logic */ }

• useContext: Access con...read more
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Q2. Event Loop
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Q3. Event Delegation
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Q4. Array and string related dsa questions
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Q5. Behaviour questions
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Q1. In-depth questions on basics of core java
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Q2. Exceptions
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Q3. Memory management
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Q1. Stream Based Problems
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Stream based problems involve processing data in a continuous flow rather than all at once.
• Use stream processing libraries like Apache Kafka or Apache Flink

• Consider factors like data volume, velocity, and variety

• Implement backpressure mechanisms to handle high data loads
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Q2. Spring Boot questions on Annotations
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Q3. SQL questions
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Q1. Stream advanced questions
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Q2. Java 8 features
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Q1. Questions on basic iOS concepts like optionals, memory management, closures, SOLID, different architectures
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Q2. What is optional and optional binding and chaining
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Optional in Swift allows variables to have no value. Optional binding and chaining are used to safely unwrap optionals.
• Optional in Swift allows variables to have no value, denoted by a '?' after the type.

• Optional binding is used to safely unwrap optionals by checking if they contain a value.

• Optional chaining allows you to call methods, access properties, and subscript on an optional that might currently be nil.

• Example:...read more
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Q3. What is ARC and how it is managed in iOS
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ARC stands for Automatic Reference Counting, a memory management system used in iOS to automatically manage memory allocation and deallocation.
• ARC automatically tracks and manages the memory used by objects in an iOS application.

• It keeps track of the number of references to an object and deallocates the object when there are no more references to it.

• ARC is enabled by default in Xcode for iOS projects, reducing the need...read more
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Q4. What are closures and how do we handle memory in closure
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Closures are self-contained blocks of functionality that can be passed around and used in code.
• Closures capture and store references to any constants and variables from the context in which they are defined.

• To prevent strong reference cycles, use capture lists in closures.

• Use weak or unowned references when capturing self inside a closure to avoid memory leaks.
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Q1. In dept questions on Memory management, SOLID with coding example, dependency injection pattern example, unit testing, custom higher order function creation program
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Q1. Basic OOPS, C#, .NET and SQL questions
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Q1. What is middleware how to create custom middleware
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Middleware is software that acts as a bridge between an operating system or database and applications, allowing them to communicate with each other.
• Middleware is a layer of software that sits between the operating system and applications, providing services such as authentication, logging, and caching.

• Custom middleware can be created in ASP.NET Core by implementing the IMiddleware interface and adding it to the applica...read more
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Q2. Can you write a program that takes the input "aabbccaaa" and produces the output "2a2b2c3a"?
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Yes, a program can be written to convert 'aabbccaaa' to '2a2b2c3a'.
• Create a function that iterates through the input string and counts the consecutive characters.

• Store the count and character in a new string as needed.

• Return the final output string.
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Q1. Self introduction and salary discussion
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