100+ RPA Developer Interview Questions and Answers

Procedural language focuses on procedures and functions, while object-oriented language focuses on objects and classes.

• Procedural language: C, Pascal, BASIC

• Object-oriented language: Java, C++, Python

• Procedural languages are better for small projects, while object-oriented languages are better for large and complex projects

To filter 1 lakh rows in Excel with specific filter, use Excel's built-in filtering feature.

• Open the Excel file and select the column you want to filter.

• Go to the Data tab and click on the Filter button.

• A drop-down arrow will appear next to each column header.

• Click on the arrow of the column you want to filter and select the specific filter criteria.

• Excel will automatically filter the rows based on the selected criteria.

Find the missing and duplicated numbers in an array of strings.

• Convert the array of strings to integers for easier manipulation.

• Calculate the sum of all numbers in the array and compare it to the sum of numbers from 1 to n, where n is the length of the array.

• The difference between the two sums will give you the missing number.

• To find the duplicated number, keep track of the frequency of each number in a hashmap.

Software Development Life Cycle (SDLC) is a process used by software development teams to design, develop, and test high-quality software.

• Waterfall Model: Sequential approach with distinct phases like requirements, design, implementation, testing, and maintenance.

• Agile Model: Iterative approach with continuous feedback and collaboration between cross-functional teams.

• Spiral Model: Combination of iterative and waterfall models, focusing on risk analysis and mitigation.

• V-Model:...read more

Version controlling is a system that records changes to a file or set of files over time so that you can recall specific versions later.

• Version controlling helps in tracking changes made to code or files over time.

• It allows multiple developers to work on the same project without interfering with each other's work.

• It helps in reverting back to previous versions of code in case of errors or bugs.

• Popular version controlling systems include Git, SVN, and Mercurial.

To publish and run a process without an orchestrator, you can use the UiPath Robot Tray or the command line interface.

• Open the UiPath Robot Tray and navigate to the Processes tab.

• Click on the 'Publish' button to publish the process to a local folder.

• Once published, you can run the process by selecting it from the list and clicking on the 'Start' button.

• Alternatively, you can use the command line interface by navigating to the installation folder of UiPath Robot and running th...read more

Recursion is a programming technique where a function calls itself to solve a problem.

• Recursion is used in scenarios where a problem can be broken down into smaller subproblems of the same type.

• Examples include factorial calculation, Fibonacci sequence generation, and tree traversal.

• Recursion is useful when the problem can be solved by solving a smaller version of the same problem.

I would focus on improving safety, efficiency, and customer experience in Indian Railways.

• Implementing advanced signaling systems to improve safety and reduce accidents

• Introducing automated ticketing systems to streamline the booking process

• Upgrading infrastructure and trains to enhance comfort and speed

• Enhancing cleanliness and hygiene standards at stations and on trains

• Implementing real-time tracking and communication systems for better passenger information

Linear data types have elements arranged in a sequential order, while non-linear data types do not have elements arranged in a sequential order.

• Linear data types include arrays, linked lists, and queues.

• Non-linear data types include trees and graphs.

• Linear data types have a single path to traverse all elements, while non-linear data types have multiple paths.

PDD and SDD contain important information for RPA developers such as process details and technical specifications.

• PDD (Process Definition Document) includes detailed information about the process to be automated, such as process steps, inputs, outputs, and exceptions.

• SDD (Solution Design Document) contains technical specifications for the RPA solution, including details on the software, hardware, and architecture to be used.

• Both documents help RPA developers understand the re...read more

A list is a collection of items that can be of different data types, while an array is a collection of items of the same data type.

• List can contain items of different data types, while array can only contain items of the same data type.

• Lists are dynamic in size, while arrays have a fixed size.

• In Python, a list is represented by square brackets [], while an array is represented by numpy arrays or arrays module.

RPA stands for Robotic Process Automation, which is the use of software robots to automate repetitive tasks.

• RPA can automate tasks such as data entry, data extraction, form filling, and report generation.

• It can improve efficiency by reducing human errors and speeding up processes.

• RPA is used in various industries like finance, healthcare, and manufacturing.

• Examples of RPA tools include UiPath, Blue Prism, and Automation Anywhere.

To read an unstructured table and convert it to a structured table, you can use OCR technology and data extraction techniques.

• Use Optical Character Recognition (OCR) technology to extract text from the unstructured table.

• Apply data extraction techniques such as regular expressions or keyword matching to identify and extract relevant information from the extracted text.

• Organize the extracted data into a structured table format by assigning appropriate column headers and arrang...read more

Truncating removes all records from a table, while deleting removes specific records.

• Truncating is faster than deleting as it does not log individual row deletions.

• Truncating resets identity columns, while deleting does not.

• Truncating cannot be rolled back, while deleting can be.

• Truncating is a DDL operation, while deleting is a DML operation.

Inner join will have more number of rows compared to outer join.

• Inner join returns only the matching rows between two tables

• Outer join returns all rows from one table and matching rows from the other table

• Example: If Table A has 10 rows and Table B has 8 rows, inner join will have maximum 8 rows while outer join can have maximum 10 rows

Double values can be saved in assets by converting them to string format.

• Convert the double value to a string using the appropriate method or function.

• Save the string value in the asset.

• When retrieving the value from the asset, convert the string back to a double using the appropriate method or function.

I will check the logs generated during the process execution and analyze the error messages to identify the root cause of the failure.

• Review the logs generated by the RPA tool during the process execution.

• Analyze the error messages in the logs to identify the specific step or action that caused the failure.

• Check for any exceptions or warnings that might provide clues about the error.

• Use debugging tools provided by the RPA tool to step through the process and pinpoint the erro...read more

There are four types of variables in UiPath: Generic, Text, Number, and Boolean.

• Generic variables can store any type of data

• Text variables store strings of characters

• Number variables store numeric values

• Boolean variables store true/false values

Programs to find second largest number, missing element in array, reverse of string. Explanation of variables, round/ceil functions, float/double difference.

• To find second largest number, sort the array in descending order and return the second element.

• To find missing element in array, calculate the sum of all elements and subtract from the expected sum of elements in the array.

• To reverse a string, use string slicing with a step of -1.

• Variable in Python is a reserved memory l...read more

Binary Tree is a hierarchical data structure where each node has at most two children. Binary Search Tree is a type of binary tree where the left child is less than the parent and the right child is greater.

• Binary Tree can have any values in any order, while Binary Search Tree follows a specific ordering based on the values.

• In Binary Search Tree, searching for a value is more efficient as it follows a specific order.

• Example: Binary Tree - 1 -> 2 -> 3, Binary Search Tree - 2 -...read more

I am comfortable with Python as a programming language.

• Python is known for its simplicity and readability, making it a popular choice for developers.

• It has a large standard library and community support, making it easy to find resources and solutions.

• Python is versatile and can be used for web development, data analysis, automation, and more.

ReFramework is a framework for building robust and scalable automation processes in UiPath. Attended bots require human intervention, while unattended bots can run autonomously. Excel activities are used to interact with Excel files.

• ReFramework is a template for building automation processes with error handling, logging, and reusability.

• Attended bots require human intervention to start and interact with, while unattended bots can run autonomously.

• Excel activities in RPA tools...read more

Input activities to take input from end user during automation include forms, text boxes, dropdowns, and buttons.

• Forms can be used to collect multiple inputs from the user.

• Text boxes allow users to enter text or numerical values.

• Dropdowns provide a list of options for users to select from.

• Buttons can be clicked by users to submit or confirm their input.

I will talk about my experience in developing a complex automation solution for a financial institution.

• I developed a custom RPA solution using UiPath to automate the reconciliation process for financial transactions.

• The solution involved integrating multiple systems and databases to ensure accurate and efficient processing.

• I conducted thorough testing and troubleshooting to identify and resolve any issues in the automation workflow.

• I collaborated with stakeholders to gather ...read more

Different types of joins include inner join, outer join, left join, and right join.

• Inner join: Returns rows when there is a match in both tables.

• Outer join: Returns all rows when there is a match in one of the tables.

• Left join: Returns all rows from the left table and the matched rows from the right table.

• Right join: Returns all rows from the right table and the matched rows from the left table.

Classes in programming provide a way to organize and structure code by grouping related data and functions together.

• Classes help in organizing code by grouping related data and functions together

• Encapsulation allows for data hiding and protection

• Inheritance enables code reusability and promotes the DRY (Don't Repeat Yourself) principle

• Polymorphism allows for flexibility and extensibility in code design

Screen scraping extracts data from UI elements while data scraping extracts structured data from web pages.

• Screen scraping involves extracting data from UI elements such as text boxes, buttons, and images.

• Data scraping involves extracting structured data from web pages such as tables, lists, and grids.

• Screen scraping is typically used when there is no API available to extract data.

• Data scraping is typically used when there is a need to extract large amounts of data from multi...read more

Screen scraping involves extracting data from the user interface of an application, while data scraping involves extracting data from the underlying code or database.

• Screen scraping extracts data from the visual elements of an application's interface.

• Data scraping involves extracting data from the underlying code or database of an application.

• Screen scraping is more prone to changes in the user interface layout, while data scraping is more stable.

• Examples of screen scraping t...read more

Use 'DataTable.Rows' property to get particular cell value from data table.

• Use 'DataTable.Rows' property to get the rows of the data table.

• Use 'DataRow.ItemArray' property to get the values of all the cells in a row.

• Use 'DataRow.Item' property to get the value of a particular cell in a row by specifying the column name or index.

To delete a row in a datatable while iterating, use the Remove method of the Rows collection.

• Use a loop to iterate through each row in the datatable.

• Check the condition for deletion and use the Remove method to delete the row.

• Ensure to handle the index correctly to avoid skipping rows.

Yes, I have expertise in UiPath Excel activities and email automations.

• I have experience in using UiPath's Excel activities such as Read Range, Write Range, Append Range, etc.

• I have also worked on automating email processes using UiPath's Email activities such as Send Outlook Mail Message, Send SMTP Mail Message, etc.

• I am familiar with Excel and Outlook integrations with UiPath.

• I have developed solutions that involve data extraction from Excel files and sending automated emai...read more

Modern and Classic folders are two different types of folders in UiPath Orchestrator.

• Modern folders are designed for multi-tenancy and allow for more granular control over permissions and access.

• Classic folders are the traditional folders in Orchestrator and are used for single-tenancy.

• Modern folders have a different user interface and are organized by tenants, while classic folders are organized by folders and subfolders.

• Modern folders also have additional features such as t...read more

Yes, I am familiar with the rail network in Mumbai.

• Mumbai has a well-developed suburban rail network operated by Indian Railways.

• The network is divided into three main lines - Western Line, Central Line, and Harbour Line.

• It is one of the busiest rail networks in the world, carrying millions of passengers daily.

• The Mumbai Metro also supplements the suburban rail network.

• Key stations include Chhatrapati Shivaji Maharaj Terminus (CSMT), Churchgate, Dadar, Andheri, and Kurla.

Encapsulation is the concept of bundling data and methods that operate on the data into a single unit. Polymorphism allows objects to be treated as instances of their parent class.

• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Encapsulation ensures data integrity and prevents unauthorized access.

• Polymorphism enables flexibility in code d...read more

My internet speed at home is 100 Mbps.

• My internet speed is 100 Mbps.

• I have a high-speed internet connection at home.

• I can easily stream videos and work on remote projects with my internet speed.

Interpreted languages are used for their flexibility, ease of debugging, and platform independence.

• Interpreted languages are easier to read and write compared to compiled languages.

• They allow for dynamic typing, making it easier to work with different data types.

• Interpreted languages are platform independent, meaning the code can run on any system with the interpreter installed.

• Debugging is easier in interpreted languages as errors are reported line by line during execution.

• E...read more

Key points to check during feasibility analysis for RPA process

• Understand the current process thoroughly

• Identify repetitive and rule-based tasks

• Assess data quality and availability

• Consider system compatibility and integration

• Evaluate potential ROI and cost savings

Fuzzy selectors are used in RPA to identify elements on a screen when traditional selectors are not precise enough.

• Fuzzy selectors use a combination of attributes to identify elements, allowing for more flexibility in automation.

• They are helpful when elements have dynamic properties or when traditional selectors fail to uniquely identify an element.

• Examples of fuzzy selectors include using partial text matches or using regular expressions to match patterns in element attribut...read more

Session and environment variables are used to store and retrieve data during RPA automation.

• Session variables are used to store data temporarily during a session.

• Environment variables are used to store data that can be accessed across multiple sessions.

• Session variables are specific to a particular user session, while environment variables are global.

• Session variables are used to store data like user preferences, while environment variables are used to store data like system ...read more

pDD stands for Process Design Document while SDD stands for Solution Design Document.

• pDD is a document that outlines the process flow and requirements of a business process.

• SDD is a document that outlines the technical solution to meet the requirements outlined in the pDD.

• pDD is created by the business analyst while SDD is created by the technical team.

• pDD is used to communicate the business requirements to the technical team while SDD is used to communicate the technical sol...read more

PDD stands for Process Definition Document and SDD stands for Solution Design Document.

• PDD outlines the process to be automated, including inputs, outputs, and steps involved.

• SDD details the technical solution for implementing the automation, including tools, architecture, and design.

• PDD is created before starting the development phase, while SDD is created during the development phase.

• Both documents are essential for successful RPA implementation.

UiPath is the best RPA tool for automation due to its user-friendly interface, scalability, and extensive community support.

• UiPath has a user-friendly interface which makes it easy for developers to create automation workflows.

• UiPath offers scalability, allowing organizations to easily expand their automation initiatives as needed.

• UiPath has a large and active community support, providing resources and assistance to developers.

• UiPath provides a wide range of features and inte...read more

Different methods to give trigger via UiPath include orchestrator, schedules, and queues.

• Using UiPath Orchestrator to schedule and trigger processes

• Setting up schedules within UiPath Studio to trigger processes at specific times

• Using queues in UiPath to trigger processes based on certain conditions

Document Understanding is a process of extracting data from unstructured documents using AI and machine learning.

• Document Understanding involves using AI and machine learning to extract data from unstructured documents such as invoices, receipts, and forms.

• It includes tasks like document classification, data extraction, and validation of extracted data.

• Document Understanding can be achieved through technologies like OCR (Optical Character Recognition) and NLP (Natural Languag...read more

Attended bots require human intervention, while unattended bots can run autonomously.

• Attended bots require human supervision and interaction during execution

• Unattended bots can run autonomously without human intervention

• Attended bots are typically used for tasks that require human decision-making

• Unattended bots are used for repetitive tasks that can be automated without human involvement

RE Framework is a template for building scalable and robust automation solutions in UiPath.

• RE stands for Robotic Enterprise Framework

• It is a template that provides a standard structure for building automation solutions

• It includes pre-built workflows for exception handling, logging, and reporting

• It follows a state machine design pattern to manage the flow of automation

• It is highly customizable and can be adapted to fit specific business needs

One difficult situation while developing a flow is handling exceptions and errors.

• Handling unexpected errors and exceptions that may occur during the flow execution.

• Dealing with complex decision-making logic within the flow.

• Ensuring the flow is scalable and can handle large volumes of data efficiently.

• Integrating the flow with other systems and applications seamlessly.

• Optimizing the flow for performance and resource utilization.