Encora Lead Engineer Interview Questions and Answers

Q1. Java 8 features? What is functional interface? Difference between Runnable and Callable? Write java8 syntax in notepad? Mainly interviewer was focusing that how much syntax I know, which is not at all good...read more
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Java 8 introduced new features like lambda expressions, functional interfaces, and streams. Functional interfaces have a single abstract method. Runnable is a functional interface for running a task in a separate thread, while Callable is a functional interface that can return a result and throw checked exceptions.
• Java 8 introduced lambda expressions for writing concise code.

• Functional interfaces have a single abstract...read more
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Q2. Java 8 features
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Q3. Streams syntax is required
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Q4. Runnable and Callable
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Q5. Way of Mutable object creation
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Mutable objects in Python can be created using various methods such as assignment, copy, or using built-in functions like dict() or list().
• Assignment operator can be used to create mutable objects, for example: x = [1, 2, 3]

• Copying an existing mutable object using the copy() method or slicing can create a new mutable object

• Using built-in functions like dict() or list() to create mutable objects
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Q1. Core java in depth
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Q2. Javascript in depth
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Javascript is a versatile programming language commonly used for web development.
• Javascript is a high-level, interpreted programming language.

• It is used for adding interactivity to websites, creating web applications, and building server-side applications.

• Javascript can manipulate the DOM, handle events, and make asynchronous requests using AJAX.

• It supports object-oriented, functional, and imperative programming styles...read more
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Q1. .Net core and Azure
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Q2. Scenario based questions
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Q1. What is volatile how to use gdb what is singleton
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Questions on volatile, gdb usage, and singleton pattern.
• Volatile is a keyword in C that tells the compiler not to optimize the variable.

• GDB is a debugger tool used to analyze and debug code during runtime.

• Singleton is a design pattern that restricts the instantiation of a class to one object.

• To use GDB, compile the code with the -g flag, run the executable with gdb, set breakpoints, and use commands like 'next' and 'pr...read more
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Q1. Java Exception handling, streams, parallel execution
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Q2. Kafka internals
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Q1. Easy level leetcode question
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Q2. Kafka internals
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Q1. Explain your current role and responsibilities
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Q2. How would you create a map
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A map can be created using geographic data and software tools to visualize locations and their relationships.
• Gather geographic data such as coordinates, boundaries, and landmarks

• Use mapping software like Google Maps, ArcGIS, or Mapbox to input and visualize the data

• Customize the map with labels, colors, and markers to enhance readability

• Consider the audience and purpose of the map to determine the level of detail and i
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Q3. Cloud migration strategy
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Q1. What is callback in Javascript?
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A callback in JavaScript is a function passed as an argument to another function, to be executed later.
• Callback functions are commonly used in asynchronous programming.

• They allow for functions to be executed after another function has finished executing.

• Example: setTimeout function in JavaScript takes a callback function as an argument to be executed after a specified time.
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Frontend application architecture