200+ RPA Developer Interview Questions and Answers

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.

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

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.

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

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

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

Fundamental data types are basic data types provided by a programming language, while derived data types are created by combining fundamental data types.

• Fundamental data types include integers, floating-point numbers, characters, and booleans.

• Derived data types are created by combining fundamental data types, such as arrays, structures, and classes.

• The main difference is that fundamental data types are predefined by the programming language, while derived data types are user-...read more

Product life cycle refers to stages a product goes through from introduction to withdrawal, while software life cycle refers to stages a software goes through from development to retirement.

• Product life cycle includes introduction, growth, maturity, and decline stages.

• Software life cycle includes planning, development, testing, deployment, and maintenance stages.

• Product life cycle focuses on physical products, while software life cycle focuses on software development.

• Product ...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.

Interpreted languages are executed line by line while compiled languages are translated into machine code before execution.

• Interpreted languages are executed line by line, translating and executing code simultaneously

• Compiled languages are translated into machine code before execution, resulting in faster performance

• Examples of interpreted languages: Python, JavaScript, Ruby

• Examples of compiled languages: C, C++, Java

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.

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

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 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.

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

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

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.

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

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

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

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.

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.

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

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

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