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350-401 Practice Question: Which two statements about Python data structures…
Which two statements about Python data structures used in network automation are true? (Choose two.)
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
✓
Dictionaries are used to store key-value pairs such as device IP, username, and password.
Correct answers: B and D. B is correct because dictionaries are ideal for storing key-value pairs such as device parameters (IP, username, password). D is correct because lists are ordered and can hold multiple device names or IPs, and they support iteration. A is incorrect because tuples are immutable, so they cannot be modified after creation, which limits their use for dynamic data. C is incorrect because sets are unordered and do not support indexing; they are used for unique elements, not ordered collections. E is incorrect because strings are immutable and not suitable for storing multiple separate values.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Tuples are commonly used to store device credentials because they can be modified easily.
Why it's wrong here
Incorrect because tuples are immutable; they cannot be modified after creation, making them unsuitable for dynamic credential storage.
- ✓
Dictionaries are used to store key-value pairs such as device IP, username, and password.
Why this is correct
Correct because dictionaries map keys to values, which is perfect for storing device parameters like IP, username, and password.
- ✗
Sets are ordered and allow indexing to retrieve specific elements.
Why it's wrong here
Incorrect because sets are unordered and do not support indexing; they are used for unique elements and set operations.
- ✓
Lists are ordered and can be used to store multiple device names for iteration.
Why this is correct
Correct because lists maintain order and allow iteration, making them suitable for storing a list of device names or IPs.
- ✗
Strings are mutable and ideal for storing multiple device configurations.
Why it's wrong here
Incorrect because strings are immutable in Python and are not designed to hold multiple separate values; they are single sequences of characters.
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Last reviewed: Jun 18, 2026
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