EPAM Systems Interview Questions, Process, and Tips

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
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Q4. Tell me the Network Configuration of AKS, what options we have during creation and how it is managed.
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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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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
Ans. 
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
Ans. 
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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Q1. Java related questions,what are all the oops concept, differences between equal and equals, design pattern, solid principle
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Q2. Selenium locator, wait, select class, action class, chome option , file uplod download
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Q3. Test ng annotations attributes parallel execution
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TestNG annotations allow for parallel execution of test methods using attributes like 'parallel' and 'thread-count'.
• TestNG annotations like @Test, @BeforeTest, @AfterTest can be used with attributes like 'parallel' to specify parallel execution of test methods.

• The 'parallel' attribute can have values like 'methods', 'tests', 'classes', 'instances' to define the scope of parallel execution.

• The 'thread-count' attribute c...read more
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Q4. Cucumber related
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Q5. Rest assured all direct questions
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Q6. Git relted question
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Q7. Ci /Cd related question
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Q1. Not much technical. Scenario based question
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Q1. No attempt. Not scheduled
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Q1. DSA question on string, Build lowest number by removing n digits from a given number.
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Q2. Questions on Java 8 features, lambda, functional interface, streams, parallel streams. Multithreading questions: Executors, competable future, locks, synchronize, atomicInteger. Garbage collectors, algorit...read more
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Q3. Coding question to filter unique element on streams and 2 more using comparator.
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Conduct a live coding test accompanied by fundamental questions on core Java.

Q1. Questions on Collections, multi threading along with basic questions on streams
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Q2. Questions on Spring Boot along with some basic coding questions
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Q1. Questions on Reactjs
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Q2. Questions on things mentioned on resume
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Q1. Salary Expectation
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