FC0-U71 Software Development Concepts Practice Question
A programmer needs to store a collection of key-value pairs where each key is unique and maps to a value. Which data structure is best suited for this purpose?
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
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Dictionary
A dictionary (hash map) stores key-value pairs with unique keys for efficient lookup.
Answer analysis
Option-by-option breakdown
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Dictionary
Why this is correct
Dictionaries (hash maps) store key-value pairs with unique keys.
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Array
Why it's wrong here
Arrays store elements by index, not by key.
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Stack
Why it's wrong here
Stacks use LIFO order, not key-value pairs.
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List
Why it's wrong here
Lists are ordered collections accessed by index.
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This FC0-U71 practice question is part of Courseiva's free CompTIA 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 FC0-U71 exam.