UiPath-ADPv1 Practice Test 15 — 15 Questions

Question 1

A developer is parsing a large XML string returned by a SOAP service. The document contains a default namespace declared as xmlns="http://tempuri.org/". The developer uses an XDocument variable and writes doc.Descendants("Customer") to retrieve all Customer elements, but the result is empty even though the XML clearly contains Customer elements. What is the correct fix?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Replace Descendants("Customer") with Descendants(XName.Get("Customer", "http://tempuri.org/")) so the query includes the namespace.. LINQ to XML compares element names including their namespace URI. A default xmlns puts every unprefixed element into that namespace, so an unqualified name string matches nothing. Supplying the namespace via XName.Get (or a namespace-aware query) makes the query resolve correctly without altering the source document.

Answer

Call doc.Descendants().Where(Function(e) e.Name.LocalName = "Customer") to match on the local name only.

Answer

Remove the xmlns attribute from the XML string before parsing so the elements become unqualified.

Answer

Convert the string to an XmlDocument and use GetElementsByTagName("Customer"), which ignores namespaces by default.

Question 2

An attended automation is deployed to users who start it from the UiPath Assistant. The business wants each run to be associated with a specific employee for auditing, and the developer must capture that identity inside the workflow without asking the user to type it. Which approach should the developer use?

Accepted Answer

Read the Windows environment variable USERNAME with the Get Environment Variable activity.. An attended robot executes in the employee's Windows session, so the USERNAME environment variable reflects that employee and can be read without prompting. This satisfies the auditing requirement automatically. Retrieving a stored credential may return a shared account, prompting the user contradicts the no-typing constraint, and querying Orchestrator adds needless complexity when the identity is already present locally.

Answer

Add an Input Dialog asking the user to type their employee ID at the start of each run.

Answer

Query the Orchestrator API for the robot that executed the job and extract the associated user.

Answer

Use the Get Credential activity to retrieve the employee's stored credential and log the username.

Question 3

A developer is using the UiPath HTTP Request activity to call an API that requires a bearer token. The token is obtained from an authentication endpoint and stored in a String variable named authToken. The developer must ensure that the token is sent in the Authorization header for every subsequent request. Which configuration in the HTTP Request activity correctly achieves this?

Accepted Answer

In the Headers property, add a new header with Name "Authorization" and Value "Bearer " + authToken.. Bearer tokens must be sent in the Authorization header with the prefix "Bearer ". The HTTP Request activity's Headers collection is the correct place to add this header dynamically using the stored token variable. This approach is secure and compliant with OAuth 2.0 standards, ensuring the API can authenticate the request.

Answer

In the Body property, add a JSON object with a key "Authorization" and value "Bearer " + authToken.

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In the Authentication property, select "Bearer Token" and enter authToken in the Token field.

Answer

In the URL property, append "?Authorization=Bearer " + authToken as a query string parameter.

Question 4

A developer is using the HTTP Request activity to call a REST API that returns a 401 Unauthorized response. The API documentation states that the access token must be included in the 'Authorization' header as 'Bearer <token>'. The developer has already obtained a valid token and stored it in a string variable named 'accessToken'. Which configuration should the developer apply to the HTTP Request activity to ensure the token is sent correctly?

Accepted Answer

In the Headers property, add a new header with Name 'Authorization' and Value 'Bearer ' + accessToken.. To send a Bearer token, the developer must add an 'Authorization' header with the value 'Bearer ' followed by the token. The HTTP Request activity allows adding custom headers via the Headers property. This is the standard and secure method. Other options either place the token in the wrong location or use unsupported authentication configurations.

Answer

In the Authentication property, select 'Bearer' and enter the accessToken variable in the Password field.

Answer

In the URL property, append '?access_token=' + accessToken as a query string parameter.

Answer

In the Body property, add a JSON object with a key 'Authorization' and value 'Bearer ' + accessToken.

Question 5

A developer needs to combine data from two DataTables, dt_Orders and dt_Customers, based on a common column 'CustomerID'. The result should include all columns from both tables, and only rows where CustomerID exists in both tables. Which method is most appropriate and efficient?

Accepted Answer

Use the 'Join Data Tables' activity with an Inner Join type.. The 'Join Data Tables' activity with an Inner Join type directly performs the required operation: it combines columns from both tables and returns only rows where the key exists in both. It is optimized for performance and is the standard UiPath method for joining DataTables, avoiding manual loops or inefficient lookups.

Answer

Use a 'For Each Row' loop over dt_Orders and use 'Lookup Data Table' to find matching rows in dt_Customers.

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Use the 'Merge Data Table' activity to combine the two tables.

Answer

Use the 'Filter Data Table' activity on both tables and then concatenate the results.

Question 6

You are debugging a UiPath automation that processes invoices in a loop. When the loop reaches the fifth invoice, the process throws an unexpected exception. You need to examine the call stack and the values of variables at the exact moment the exception was thrown, including local variables from nested workflows. Which debugging feature should you use?

Accepted Answer

The 'Call Stack' panel and 'Locals' panel after enabling 'Break on Exception'. Enabling 'Break on Exception' pauses the debugger at the moment an exception is thrown, before any exception handling logic executes. This allows you to examine the Call Stack panel to trace the execution path through nested workflows and the Locals panel to inspect variable values in each scope. This combination provides the most complete picture of the state at the time of failure.

Answer

Breakpoints with conditional expressions

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Exception breakpoints with 'Break when exception is thrown'

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The 'Locals' panel during normal execution

Question 7

A developer has built a UiPath API workflow that calls a vendor's REST endpoint returning a JSON object with a nested 'items' array. The response is large, and the developer needs to extract only the 'id' field from each element in 'items' to feed a downstream process. The HTTP Request activity's output is stored in a variable of type String. Which approach should the developer use to reliably extract the required values?

Accepted Answer

Use the Deserialize JSON activity with the response string and then access the nested array using a JSONPath expression such as "$.items[*].id".. The Deserialize JSON activity is purpose-built for parsing JSON strings into a manipulable object. Using JSONPath with "$.items[*].id" directly retrieves the needed array of ids without brittle string parsing. This method is robust against formatting changes and is the UiPath-recommended way to handle nested JSON payloads in API workflows.

Answer

Use the Deserialize XML activity after converting the JSON string to XML using a custom conversion function.

Answer

Use a RegEx Matches activity with the pattern "\"id\":\s*\"(.*?)\"" on the response string to capture all id values.

Answer

Use the Execute JavaScript activity to run a JavaScript snippet that parses the JSON and returns the ids as a comma-separated string.

Question 8

A developer is using UiPath Autopilot for Developers to generate a workflow that sends an email with an attachment. The initial prompt is: 'Send an email with the report as an attachment.' The generated workflow uses a hardcoded file path. The developer wants to improve the generation quality on the next attempt. Which action should the developer take?

Accepted Answer

Rewrite the prompt to include the specific variable name for the attachment path, the email recipient source, and the mail server configuration details.. The quality of Autopilot-generated workflows depends heavily on the specificity of the prompt. Including variable names, data sources, and configuration details gives Autopilot the context needed to produce parameterized, reusable logic rather than hardcoded values. Refining the prompt is the direct and correct way to improve the next generation attempt.

Answer

Switch the project to C# and regenerate, because Autopilot produces better results in C# than in VB.NET.

Answer

Disable the 'Use Autopilot' option in the project settings and manually code the workflow instead.

Answer

Increase the number of tokens allocated to the Autopilot request in the Studio settings to allow for longer generation.

Question 9

You are debugging a UiPath automation that uses a 'Parallel' activity to process multiple transactions simultaneously. One branch throws an exception, but the other branches continue executing. You need to identify which branch failed and why, without stopping the entire process. Which debugging approach is most effective?

Accepted Answer

Add logging activities at the start and end of each branch, then review the Output panel for errors. In a Parallel activity, branches run concurrently, so traditional step debugging is ineffective. Adding Log Message activities at the start and end of each branch, and within Catch blocks, provides a clear audit trail in the Output panel. This lets you see which branch started, which completed successfully, and which failed, all without interrupting the other branches' execution.

Answer

Set a breakpoint on the 'Parallel' activity and step into each branch sequentially

Answer

Enable 'Break on Exception' and set the debugger to stop only on unhandled exceptions

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Use the 'Run' panel to execute each branch separately and compare results

Question 10

A developer is working with a DataTable that contains a column 'Price' of type String. The developer needs to calculate the total sum of all prices. Which approach is most appropriate?

Accepted Answer

Use a 'For Each Row' loop to convert each price to Double and accumulate the sum.. When a DataTable column is of type String, numeric aggregation functions cannot be applied directly. Converting each value to a numeric type within a loop is the correct approach. This ensures that the sum is calculated accurately and avoids runtime errors from type mismatches.

Answer

Use the 'Compute' method on the DataTable with the expression 'SUM(Price)'.

Answer

Use the 'Aggregate' activity with the 'Sum' function on the 'Price' column.

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Use LINQ in an 'Invoke Code' activity to sum the column directly.

Question 11

A workflow builds an in-memory lookup of 200,000 customer records keyed by a 12-character alphanumeric account code, then performs about 400,000 existence checks during invoice matching. The current implementation uses a List(Of String) of account codes and calls .Contains for each check, and the job now runs for hours. Which change best addresses the performance problem?

Accepted Answer

Load the account codes into a Dictionary(Of String, Boolean) and test existence with ContainsKey for each check.. The runtime is dominated by the algorithmic cost of scanning a 200,000-element list for each of 400,000 checks. Hashing the account codes in a Dictionary and testing with ContainsKey reduces each check to near-constant average time, eliminating the quadratic-style blowup. Changing collection types without changing the lookup algorithm, or adding error handling, leaves the fundamental cost untouched.

Answer

Keep the List(Of String) but sort it once and call BinarySearch for each existence check.

Answer

Convert the List(Of String) to a String array and use Array.IndexOf for each existence check.

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Enable the 'Continue on error' property on the loop and wrap each check in a Try Catch so failed checks are skipped.

Question 12

A UiPath process reads a monthly sales workbook where each sheet uses the same layout but the sheet name is appended with the region, for example 'Sales_EMEA'. The workbook path and region are provided as arguments at runtime. You must extract every data row from the sheet matching that region and load it into a DataTable. (Choose two.)

Accepted Answer

Use the Read Range activity inside an Excel Application Scope, setting the SheetName property to a dynamic expression that concatenates the 'Sales_' prefix with the region argument.. Reading the correct region sheet requires targeting it dynamically at runtime. Read Range accepts a dynamically built SheetName, and Get Workbook Sheets allows resolving the exact name when suffixes vary. Both approaches open the workbook through the Excel activities and yield the region's rows as a DataTable. Specifying a range address, filtering before reading, or writing sheets do not perform the required read of the region-specific worksheet.

Answer

Use Read Range with the Range property set to the region argument so that only cells whose content equals the region are returned.

Answer

Use the Filter Data Table activity with a condition on the region column, without specifying a sheet, to isolate the region's rows.

Answer

Use the Write Range activity with the region argument as the sheet name to normalize the workbook so all regions share a single sheet.

Question 13

A developer is using the UiPath HTTP Request activity to send a POST request to an API that expects a JSON payload. The developer has a Dictionary(Of String, Object) variable named payloadDict containing the data to send. Which approach correctly serializes the dictionary and configures the request?

Accepted Answer

Use the Serialize JSON activity on payloadDict to get a JSON string, then set the HTTP Request activity's Body property to that string and the Content-Type header to "application/json".. To send a dictionary as JSON, you must serialize it into a string using the Serialize JSON activity. Then, set the HTTP Request's Body to that string and include the Content-Type header as "application/json". This ensures the API receives a properly formatted JSON payload and interprets it correctly.

Answer

Set the Body property directly to payloadDict and set the Content-Type header to "application/json".

Answer

Use the Serialize JSON activity on payloadDict and set the Body property to the result, but leave the Content-Type header unset.

Answer

Use the Deserialize JSON activity on payloadDict and set the Body property to the result.

Question 14

You are debugging a UiPath process that reads a large Excel file and then filters rows using a DataTable. The workflow completes successfully but takes an excessively long time. You suspect that a specific activity is the bottleneck. Which debugging feature in UiPath Studio should you use to identify the activity consuming the most execution time?

Accepted Answer

Use the 'Profile Execution' option in the Debug tab.. Profile Execution is the dedicated performance analysis tool in UiPath Studio. It runs the workflow and collects timing data for each activity, producing a report that highlights the most time-consuming activities. For a process that reads a large Excel file and filters a DataTable, this data pinpoints the exact activity to optimize, such as replacing a slow filter with a more efficient method.

Answer

Enable the 'Highlight Elements' option in the Debug ribbon.

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Enable the 'Execution Trail' option in the Debug ribbon.

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Set a breakpoint on the Excel Read Range activity and step through each activity manually.

Question 15

You are debugging a UiPath workflow that intermittently throws a BusinessRuleException inside a Try Catch. You want the debugger to pause execution at the exact moment the exception is thrown, before any Catch block handles it, so you can inspect the Locals panel. Which debugging feature should you configure?

Accepted Answer

Enable 'Break on Exceptions' in the Breakpoints panel and set the exception type to BusinessRuleException.. The Break on Exceptions feature in the Breakpoints panel suspends the debugger at the moment an exception is thrown, before the runtime transfers control to a Catch block. Filtering by BusinessRuleException narrows the pause to the exact type you care about, letting you inspect Locals at the original failure site rather than downstream after handling logic has already altered state.

Answer

Add a Breakpoint on every activity inside the Catch block to stop after the exception is handled.

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Insert a Log Message activity immediately before the Throw activity to record the exception message.

Answer

Set the project's 'ExecutionMode' to Debug in the project settings before running the process.