UiPath-ADPv1 Generic Automation Development Practice Question
Which variable type should be used to store a collection of unique strings that need to be accessed by their index in a strictly ordered sequence?
⚠ Common exam trap
Candidates often confuse Arrays with Lists or Dictionaries. They may choose a List when an Array is more appropriate for fixed-size, indexed, and ordered collections of strings.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Array of Strings
An Array of Strings is the ideal structure for storing a fixed-size collection of items that must be accessed by index. Understanding collection types is fundamental for developers to manage data structures efficiently. Choosing the correct collection prevents type casting errors and allows for better memory management, ensuring the automation remains stable while performing iterative logic on ordered lists of data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
List<String>
Why it's wrong here
While a List<String> supports dynamic resizing, an Array is the standard structure for fixed-size collections where index-based access is the primary requirement. Using a List when the count is known and constant is less performant than an Array, which offers tighter memory allocation for fixed-length data sequences.
- ✗
Dictionary<String, String>
Why it's wrong here
A Dictionary is used for key-value pair lookups, not for index-based sequential access. Attempting to use a Dictionary for ordered indexing requires additional logic that degrades performance. It is structurally designed for fast access by unique keys rather than sequential iteration based on integer indices in the collection.
- ✓
Array of Strings
Why this is correct
An Array provides high-performance access to elements via a zero-based integer index. It is the most memory-efficient structure for static collections of strings that do not require frequent additions or deletions, perfectly aligning with the requirement for ordered sequence access in standard UiPath automation development workflows.
- ✗
DataTable
Why it's wrong here
A DataTable is a complex structure designed for tabular data with rows and columns, not for a simple sequence of strings. Using a DataTable for a simple list introduces unnecessary overhead and makes the code significantly harder to read and maintain for developers interacting with simple string collections.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official UiPath exam blueprint
This UiPath-ADPv1 practice question is part of Courseiva's free UiPath certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the UiPath-ADPv1 exam.