Mixed Deck — All UiPath Certification Topics Flashcards

In UiPath AI Center, what is an 'ML Skill'?

Answer: A deployed ML model exposed as an API endpoint callable from UiPath Studio activities

An ML Skill wraps a trained ML model as a REST API endpoint that Studio's 'ML Skill' activity can call to get predictions inline in automation.

Which UiPath activity adds a new row to an existing DataTable variable?

Answer: Add Data Row

The 'Add Data Row' activity appends a new row to a DataTable, accepting either an array of values or a DataRow object.

In UiPath, what type of exception should you throw when a business rule is violated (e.g., invoice amount is negative)?

Answer: BusinessRuleException

BusinessRuleException is a UiPath-specific exception type used to flag data or rule violations, marking queue items as Business Exception in Orchestrator.

What is the 'Log Message' activity used for in UiPath?

Answer: Sending a log entry with a specified severity level to the robot's output and Orchestrator logs

Log Message writes a text message at a chosen level (Trace, Info, Warn, Error, Fatal) to both Studio output and Orchestrator's Logs section.

What is 'Action Center' in UiPath and how does it relate to Document Understanding?

Answer: A task management platform where humans complete assigned review or approval tasks generated by automation

Action Center is UiPath's human-in-the-loop platform where robots can pause and assign tasks — like document validation — to human workers before continuing.

Which UiPath Studio layout view shows the sequential flow of activities as a flowchart?

Answer: Flowchart

The Flowchart layout visually represents logic using decision nodes and directional arrows between activities.

What is the purpose of 'Webhooks' in UiPath Orchestrator?

Answer: To send HTTP POST notifications to external systems when Orchestrator events occur

Webhooks allow Orchestrator to push real-time event notifications (job started, queue item failed, etc.) to external systems via HTTP POST.

What keyboard shortcut is used to invoke (call) another workflow file in UiPath Studio?

Answer: There is no shortcut — drag Invoke Workflow File activity

The Invoke Workflow File activity must be dragged from the Activities panel; there is no single keyboard shortcut to call another file.

In UiPath, what is the 'Exception' variable automatically created in a Catch block?

Answer: A reference to the caught exception object, allowing access to .Message and .StackTrace properties

The Catch block automatically provides an exception variable of the caught type, giving access to properties like Message, StackTrace, and InnerException.

What is the purpose of 'Snippets' in UiPath Studio?

Answer: Pre-built reusable workflow segments that can be dragged into projects

Snippets are reusable workflow fragments stored in a panel that developers can drag into their automation for common patterns.

Which panel in UiPath Studio displays all declared variables and their scope?

Answer: Variables Panel

The Variables Panel lets developers view, create, and manage variables along with their data types and default values.

Which UiPath Studio feature lets you temporarily disable an activity without deleting it?

Answer: Disable Activity

Right-clicking an activity and choosing 'Disable Activity' greys it out and excludes it from execution, similar to commenting out code.

What is the primary purpose of UiPath Document Understanding?

Answer: Extracting structured data from unstructured documents like invoices, forms, and contracts

Document Understanding combines OCR, AI, and human validation to intelligently extract and classify data from documents at scale.

What is a 'Machine Template' in UiPath Orchestrator?

Answer: A reusable machine configuration that can be associated with multiple host machines

Machine Templates define a named configuration (including runtime slots) that can be linked to one or more physical or virtual host machines.

How do you access the value in the column named 'Email' from a DataRow variable called 'row' in UiPath?

Answer: row('Email').ToString

In VB.NET, DataRow column values are accessed using parentheses with the column name as a string key, then converted with .ToString.

Which UiPath debugging feature allows you to execute the workflow one activity at a time?

Answer: Step Into

Step Into (F11) executes one activity at a time and enters invoked workflows to trace each nested step.

What is the purpose of the 'Arguments' panel in UiPath Studio?

Answer: To pass data between workflows

Arguments allow data to be passed into and out of invoked workflows, functioning like method parameters.

Which UiPath debugging mode runs the workflow slowly with each activity highlighted to help spot timing issues?

Answer: Slow Step

Slow Step mode executes the workflow with a configurable delay between activities, highlighting each one as it runs for visual tracing.

How do you concatenate two strings 'Hello' and 'World' with a space in UiPath VB.NET?

Answer: B and C are both correct

Both the & operator and String.Concat method are valid VB.NET string concatenation techniques supported in UiPath expressions.

What is the primary purpose of Robotic Process Automation (RPA)?

Answer: To automate repetitive, rule-based tasks performed by humans

Robotic Process Automation (RPA) is specifically designed to automate tasks that are repetitive, rule-based, and typically performed by humans. Its primary goal is to improve efficiency and accuracy by having software robots mimic human interactions with digital systems, rather than replacing all human jobs or creating advanced AI.