RPA 50+ UiPath Support Interview Questions & Answers
1. Basic Concepts (10 Q&A)
Q1. What is RPA and how does UiPath use it?
A: RPA automates repetitive tasks without human intervention. UiPath provides Studio for design, Robots for execution, and Orchestrator for management. It reduces errors, saves time, and improves operational efficiency.
Q2. What are the main components of UiPath?
A: Studio, Robot, and Orchestrator are core components. Studio designs workflows, Robot executes them, and Orchestrator schedules, monitors, and manages bots. They enable end-to-end automation solutions.
Q3. Difference between Attended and Unattended Robots?
A: Attended robots need human triggers and assist front-office tasks. Unattended robots run independently for back-office operations. Licensing, scheduling, and monitoring differ between them.
Q4. What is a Selector?
A: A selector is an XML fragment identifying UI elements. It uses attributes like ID, name, or class. Accurate selectors are crucial for stable automation and avoiding runtime errors.
Q5. What is the purpose of wildcards in selectors?
A: Wildcards (*, ?) handle dynamic or changing UI elements. They make workflows robust against UI modifications. Correct use prevents bot failures due to minor changes.
Q6. Difference between variable and argument?
A: Variables store local data within a workflow. Arguments pass data between workflows. Arguments enable modular and reusable designs and maintain workflow clarity.
Q7. Difference between RPA and traditional automation?
A: RPA mimics human actions without changing applications. Traditional automation requires API or code changes. RPA is faster, flexible, and less intrusive.
Q8. Difference between process and task in UiPath?
A: A process is an end-to-end automation workflow. A task is a single action within a process. Processes combine tasks to complete automation goals.
Q9. What is a queue in UiPath?
A: Queues store transactions for processing by robots. They support retries, monitoring, and handling large volumes. Queues are managed centrally in Orchestrator.
Q10. What is UiPath StudioX?
A: StudioX is a simplified version of Studio for business users. It uses drag-and-drop activities for low-code automation. It allows non-technical users to create automations quickly.
2. Workflows & Design (10 Q&A)
Q11. Difference between Sequence, Flowchart, and State Machine?
A: Sequence is linear, Flowchart handles branching/parallel paths, and State Machine manages states with transitions. Selection depends on process complexity and logic.
Q12. What is REFramework?
A: REFramework is a standard enterprise template. It handles initialization, transaction processing, error handling, and logging. It ensures scalable and reliable automation.
Q13. When to use arguments instead of variables?
A: Arguments are for passing data between workflows. Variables are for local storage. Arguments enable modular, reusable, and maintainable workflow design.
Q14. How to implement modular workflows?
A: Break processes into smaller reusable workflows. Use arguments to exchange data. Modular design improves maintainability and reduces errors.
Q15. How to handle exceptions in workflows?
A: Use Try-Catch blocks, Throw activities, and Global Exception Handler. Handle business and application exceptions separately. Log errors for troubleshooting.
Q16. How to design workflows for high-volume processing?
A: Use queues, batch processing, and parallel execution. Implement retries, exception handling, and logging. Modularize workflows for efficiency and maintainability.
Q17. Difference between business and application exceptions?
A: Business exceptions relate to invalid data or business rules. Application exceptions arise from system errors. Both should be handled to maintain process continuity.
Q18. How to use Config files?
A: Config files store environment-specific or process-specific settings. They reduce hard-coding and simplify maintenance. Load values dynamically at runtime.
Q19. Best practices for workflow naming conventions?
A: Use descriptive, consistent names for workflows, variables, and arguments. Maintain readability and collaboration. Helps support and troubleshooting.
Q20. How to implement retry mechanism?
A: Use REFramework retry logic or Try-Catch loops. Specify max retry count and handle exceptions gracefully. Include logging for each retry attempt.
3. Selectors & UI Automation (10 Q&A)
Q21. How to handle dynamic selectors?
A: Use variables, wildcards, or anchor-based selectors. Dynamic selectors adapt to changing UI elements. They reduce runtime failures and increase reliability.
Q22. What is Anchor Base activity?
A: Anchor Base uses a stable element as a reference to locate nearby elements. Useful for inconsistent or dynamic UIs. Improves automation stability.
Q23. Difference between Image, Text, and OCR automation?
A: Image automation works on screen images. Text automation reads structured text. OCR extracts text from unstructured documents or images.
Q24. How to automate Citrix or virtual desktops?
A: Use image-based automation or OCR, as selectors may fail. Include retries and dynamic waits. Ensures reliable automation in remote environments.
Q25. How to reduce selector-related failures?
A: Use dynamic selectors, wildcards, and anchors. Avoid hard-coded indices or volatile attributes. Test selectors in multiple scenarios.
Q26. Difference between Full, Partial, and Native selectors?
A: Full selectors include all attributes, Partial uses minimal required ones, Native relies on app-specific methods. Choose based on reliability and complexity.
Q27. How to handle pop-ups or unexpected dialogs?
A: Use Element Exists, On Element Appear, or Try-Catch. Set timeout and retries. Ensure process continues safely.
Q28. How to identify a reliable selector?
A: Inspect elements, use stable attributes, avoid volatile IDs. Test across sessions. Reliable selectors reduce errors and support automation stability.
Q29. Difference between Simulate Click and Send Window Messages?
A: Both enable background automation. Simulate Click is faster, works without UI focus. Send Window Messages sends OS-level input for compatibility.
Q30. How to automate PDFs?
A: Use PDF activities or Document Understanding. For unstructured PDFs, use OCR. Validate data before further processing.
4. Orchestrator & Deployment (10 Q&A)
Q31. Purpose of Orchestrator?
A: Orchestrator manages robots, schedules jobs, monitors execution, and handles queues. Stores assets and credentials centrally. Provides visibility and control.
Q32. Difference between Jobs and Processes?
A: Processes are deployed workflows. Jobs are executions of processes. Orchestrator tracks and manages jobs separately.
Q33. How to schedule a bot?
A: Use Orchestrator to set triggers and recurrence. Assign robots and environments. Enables automated execution without manual intervention.
Q34. How to monitor running robots?
A: Use Orchestrator dashboard to track jobs, logs, queues, and robot health. Provides real-time visibility and troubleshooting insights.
Q35. How to handle multiple environments?
A: Use separate folders or tenants. Store environment-specific values in config files or assets. Switch dynamically during deployment.
Q36. How to secure credentials?
A: Store credentials in Orchestrator Assets. Retrieve at runtime. Avoid hard-coding sensitive data in workflows.
Q37. How to deploy a process in Orchestrator?
A: Publish workflow from Studio to Orchestrator. Assign robots and environments. Test deployment with sample transactions.
Q38. How to scale automation with multiple robots?
A: Use queues for parallel transactions. Assign multiple robots via Orchestrator. Monitor execution and balance workloads.
Q39. How to handle license allocation for robots?
A: Assign robot licenses in Orchestrator based on attended/unattended usage. Monitor license utilization to prevent conflicts.
Q40. How to manage assets in Orchestrator?
A: Assets store reusable data like URLs, credentials, or config values. Retrieve at runtime in workflows. Improves maintainability and security.
5. Real-Time Support Scenarios (10 Q&A)
Q41. Bot fails due to UI changes. How to fix?
A: Update selectors using dynamic attributes or anchors. Test thoroughly. Implement fallback mechanisms to reduce failures.
Q42. Bot fails intermittently due to network latency.
A: Implement retries, dynamic waits, and exception handling. Use queues to manage high-volume transactions. Monitor execution for stability.
Q43. How to debug NullReferenceException?
A: Check variable initialization and input data. Add validation checks and Try-Catch blocks. Ensure all references are correctly assigned.
Q44. How to optimize workflow performance?
A: Minimize unnecessary UI interactions, remove redundant delays, process data in bulk, and modularize workflows. Log performance metrics.
Q45. How to handle high-volume transactions (10,000+ items)?
A: Use Dispatcher-Performer queue model. Employ multiple robots and parallel execution. Retry failed transactions and monitor logs.
Q46. How to handle PDF data extraction errors?
A: Use OCR with validation checks. Handle unstructured content via Document Understanding. Log failures and retry if necessary.
Q47. How to maintain automation with application updates?
A: Use dynamic selectors and modular workflows. Update workflows after testing. Maintain documentation for reference.
Q48. Bot fails due to expired credentials.
A: Update credentials in Orchestrator. Implement validation checks before execution. Handle exceptions gracefully in workflows.
Q49. How to ensure reliability in unattended automation?
A: Use queues, retries, robust selectors, proper exception handling, and detailed logging. Regular monitoring ensures smooth execution.
Q50. How to handle failed queue items?
A: Mark as failed and log the reason. Retry based on business rules or escalate. Analyze root cause to prevent recurrence.
Q51. How to validate automation results?
A: Compare outputs with expected results. Include verification steps in workflows. Log mismatches for review.
Q52. How to handle long-running processes?
A: Use state machines or checkpoints. Monitor progress and logs. Resume interrupted processes without data loss.
Q53. How to maintain handover for support team?
A: Provide detailed documentation, modular workflows, configuration files, and process maps. Ensure the team understands process logic.
Q54. How to stay updated with UiPath changes?
A: Follow UiPath release notes, community forums, and UiPath Academy. Practice new features and implement in test workflows.
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