Einfochips Senior Software Developer Interview Questions and Answers

Q1. Why functional interface when we have interface
Ans. 
Functional interfaces provide a single abstract method for functional programming in Java.
• Functional interfaces allow for lambda expressions and method references to be used as instances of the interface.

• Interfaces with multiple abstract methods cannot be used for lambda expressions.

• Example: java.util.function.Function is a functional interface with a single abstract method apply().
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Q2. Java 8 explain all features in short
Ans. 
Java 8 introduced new features like lambda expressions, streams, functional interfaces, and default methods.
• Lambda expressions: Allows writing concise code by enabling functional programming.

• Streams: Provides a way to work with sequences of elements efficiently.

• Functional interfaces: Interfaces with a single abstract method, used for lambda expressions.

• Default methods: Allows adding new methods to interfaces without br
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Q3. If one functional interface can extend another interface
Ans. 
Yes, one functional interface can extend another interface in Java.
• Functional interfaces can extend other functional interfaces in Java.

• The child interface can have only one abstract method, but can inherit default methods from the parent interface.

• Example: interface Parent { void method1(); } interface Child extends Parent { void method2(); }
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Q1. No of divisions in cobol?
Ans. 
There are four divisions in COBOL: Identification Division, Environment Division, Data Division, and Procedure Division.
• Identification Division: Contains program name, author, and date.

• Environment Division: Specifies the hardware and software environment.

• Data Division: Defines the data structures used in the program.

• Procedure Division: Contains the actual program logic.
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Q2. What is GDG in JCL?
Ans. 
GDG stands for Generation Data Group in JCL, used to manage related datasets as a single unit.
• GDG is used in JCL to group related datasets together for easier management.

• It allows for easy referencing of datasets within the group using relative generation numbers.

• Example: MYDATA.GDG(+1) refers to the most recent generation in the GDG.

• Example: MYDATA.GDG(-1) refers to the previous generation in the GDG.
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Q1. Javascript basics, class and functional components, basic es6
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Q1. Promises, context api, redux and rest API
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Hello tell me about yourself

Q1. Tell me about your self
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Q2. What are the technical skill
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Q1. How many years of experience in Python?
Ans. 
I have 5 years of experience in Python.
• 5 years of hands-on experience in Python programming

• Proficient in developing web applications, data analysis, and automation scripts using Python

• Familiar with popular Python libraries and frameworks such as Django, Flask, and NumPy
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Q2. What is the difference between List and Tuple?
Ans. 
List is mutable, Tuple is immutable in Python.
• List can be modified after creation, Tuple cannot be modified.

• List is defined using square brackets [], Tuple is defined using parentheses ().

• Example: list_example = [1, 2, 3], tuple_example = (1, 2, 3)
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Q3. What is lambda function?
Ans. 
A lambda function is a small anonymous function defined using the lambda keyword in Python.
• Lambda functions can take any number of arguments, but can only have one expression.

• They are commonly used as a way to create small, throwaway functions.

• Lambda functions are often used in conjunction with functions like map(), filter(), and reduce().
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Q4. What are the Data types used in your project?
Ans. 
The data types used in the project include integers, strings, floats, and booleans.
• Integers are used for storing whole numbers, such as IDs or quantities.

• Strings are used for storing text data, such as names or descriptions.

• Floats are used for storing decimal numbers, such as prices or measurements.

• Booleans are used for storing true/false values, such as status indicators.
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Q5. Write a code having square of a series which is divisible by 3 using lambda function ?
Ans. 
Code to find square of series divisible by 3 using lambda function.
• Create a list of numbers in the series

• Use filter() function with lambda function to filter numbers divisible by 3

• Use map() function with lambda function to find square of each number
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Will include all logical reasoning, coding and communication queries

C,C++,Java,Python,GCP,ETL

Q1. Where would you love to see yourself after 5years in this company
Ans. 
I would love to see myself leading a team of developers, working on cutting-edge technologies, and contributing to the company's growth.
• Leading a team of developers

• Working on cutting-edge technologies

• Contributing to the company's growth
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