UiPath Certification UiPath Data Manipulation and Variables 2

Question 1

In UiPath, which collection type stores key-value pairs and allows fast lookup by key?

Accepted Answer

Dictionary

Answer

Dictionary(Of TKey, TValue) stores unique key-value pairs and provides O(1) average lookup time by key.

Question 2

What VB.NET expression checks if a string variable 'str' is null or empty in UiPath?

Accepted Answer

String.IsNullOrEmpty(str)

Answer

String.IsNullOrEmpty(str) returns True if str is Nothing or an empty string, making it the safest null-safe check.

Question 3

Which UiPath activity filters rows in a DataTable based on a condition?

Accepted Answer

Filter Data Table

Answer

The 'Filter Data Table' activity applies column-based filter conditions and outputs a new DataTable containing only the matching rows.

Question 4

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

Accepted Answer

B and C are both correct

Answer

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

Question 5

Which UiPath activity removes duplicate rows from a DataTable?

Accepted Answer

LINQ on DataTable

Answer

UiPath does not have a built-in 'Remove Duplicates' activity; you must use LINQ expressions like dt.AsEnumerable().Distinct() with a custom IEqualityComparer or group by logic.

UiPath Certification Practice Test

UiPath Certification Practice Test

UiPath Certification UiPath Data Manipulation and Variables 2