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Software Development and Design →easyMultiple SelectObjective-mapped

200-901 Software Development and Design Practice Question

This 200-901 practice question tests your understanding of software development and design. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Which TWO of the following are valid Python data types?

A
array
Why wrong: Python has 'array' in the array module, but it is not a built-in data type like list or dict.
B
list
List is a mutable sequence type.
C
set
Why wrong: Set is a valid data type, but only TWO answers are required; since list and dict are correct, set is extra.
D
dict
Dictionary is a mapping type.
E
map
Why wrong: Map is a function, not a data type.

Full breakdown with real-world context →

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

✓

list

Option B (list) is correct because Python's built-in list type is a mutable, ordered collection that can hold heterogeneous elements and is a fundamental data type in the language. Option D (dict) is correct because dict is a built-in mapping type that stores key-value pairs with unique keys, making it a core Python data type.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
array
Why it's wrong here
Python has 'array' in the array module, but it is not a built-in data type like list or dict.
✓
list
Why this is correct
List is a mutable sequence type.
Related concept
Read the scenario before looking for a memorised answer.
✗
set
Why it's wrong here
Set is a valid data type, but only TWO answers are required; since list and dict are correct, set is extra.
✓
dict
Why this is correct
Dictionary is a mapping type.
Related concept
Read the scenario before looking for a memorised answer.
✗
map
Why it's wrong here
Map is a function, not a data type.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Cisco often tests the distinction between built-in data types (like list and dict) and modules or functions (like array and map) that are not data types themselves, causing candidates to confuse the array module or map function with actual data types.

Detailed technical explanation

How to think about this question

Python's list is implemented as a dynamic array (specifically, a contiguous array of pointers to PyObject), allowing O(1) amortized append operations and O(n) insertions. The dict type uses a hash table with open addressing (specifically, a variant of Python's 'dict' implementation that stores entries in a compact array), providing average O(1) lookup, insertion, and deletion. In real-world scenarios, choosing between list and dict impacts memory usage and performance: lists are ideal for ordered sequences with index-based access, while dicts excel at fast key-based lookups, such as caching API responses or storing configuration mappings.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A practitioner preparing for the 200-901 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this 200-901 question test?

Software Development and Design — This question tests Software Development and Design — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: list — Option B (list) is correct because Python's built-in list type is a mutable, ordered collection that can hold heterogeneous elements and is a fundamental data type in the language. Option D (dict) is correct because dict is a built-in mapping type that stores key-value pairs with unique keys, making it a core Python data type.

What should I do if I get this 200-901 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

About these practice questions

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Last reviewed: Jul 4, 2026

Question Discussion

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This 200-901 practice question is part of Courseiva's free Cisco 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 200-901 exam.