Kastech Software Solutions Group RPA Developer Interview Questions and Answers

Logical reasoning and Aptitude

Functions with Pointers and strings concepts

Q1. Mainly on Pointers and Dynamic Memory Allocation of 2-D Array
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Q2. Structure Padding and Packing
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Q1. Difference b/w git pull and git fetch
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git pull fetches changes and merges them with the current branch, while git fetch only fetches changes without merging.
• git pull fetches changes from the remote repository and merges them with the current branch.

• git fetch only fetches changes from the remote repository without merging.

• git pull is a combination of git fetch and git merge.

• git fetch is useful for reviewing changes before merging.
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Q2. Data injection in java
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Data injection in Java refers to the process of inserting data into a program or system.
• Data injection can occur through user input, API calls, or external sources.

• It can lead to security vulnerabilities such as SQL injection or cross-site scripting.

• Prevent data injection by validating and sanitizing input, using parameterized queries, and implementing security measures.
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Q1. Everything HTML CSS SQL and core java
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Had a DSA question based on maps, CSS related MCQ and prototype related MCQ

Q1. Solved basic DSA question hashmap
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Q1. What are oops concepts in java, explain real time scenario
Ans. 
OOPs concepts in Java include inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance allows a subclass to inherit properties and methods from a superclass.

• Polymorphism allows objects to take on multiple forms and behave differently based on their context.

• Encapsulation hides the implementation details of an object and only exposes necessary information.

• Abstraction allows for the creation of abstract class...read more
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Q2. Uses of interface, inheritance
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Interfaces define contracts for behavior, while inheritance allows for code reuse and polymorphism.
• Interfaces allow for loose coupling and abstraction, enabling multiple implementations of the same behavior.

• Inheritance allows for code reuse and extension of existing classes, reducing code duplication.

• Polymorphism allows objects of different classes to be treated as if they were of the same class, simplifying code and i
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Q3. SQL query for join of tables
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SQL query for joining tables
• Use JOIN keyword to combine two or more tables based on a related column

• Specify the columns to be selected using SELECT keyword

• Use ON keyword to specify the condition for joining the tables

• Different types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN
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Q4. Java concepts used in your project
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Used Java concepts such as inheritance, polymorphism, and exception handling in my project.
• Implemented inheritance to create a base class and derived classes with specific functionalities.

• Utilized polymorphism to allow objects of different classes to be treated as if they were of the same class.

• Implemented exception handling to handle errors and prevent program crashes.

• Used interfaces to define a set of methods that a ...read more
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Q5. Overloading vs overriding, practical uses
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Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
• Overloading is used to provide different ways to call a method with different parameters

• Overriding is used to provide a specific implementation of a method in a subclass

• Overloading is resolved at compile-time while overriding is r...read more
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Q1. Basic ques related to resume
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Q1. Tell Me about something
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Q1. Question on SQL like Displaying second largest number find the record where name start with aa and end with oo
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Q1. What is your Salary expectation
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A basic aptitude test consisting of theoretical questions.

Q1. Basic questions in Java,SQL and React
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Q1. Coding questions-Reverse String(World Hello), pattern, prime number
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Q2. Project related questions
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