200-901 Infrastructure and Automation Practice Question
A YANG module defines a leaf named 'bandwidth' of type 'uint32'. What does this represent in the context of a network device?
⚠ Common exam trap
Cisco often tests the distinction between a 'leaf' (single value) and a 'leaf-list' (multiple values), so the trap here is that candidates may confuse a leaf with a list or container, especially when the leaf name 'bandwidth' might imply multiple possible values.
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
✓
A single integer value representing bandwidth in kilobits per second
In YANG, a 'leaf' node defines a single, scalar value of a specific data type. When the leaf is named 'bandwidth' with type 'uint32', it represents a single integer value, typically interpreted as kilobits per second (kbps) in the context of network device configuration (e.g., interface bandwidth). This aligns with the standard YANG data modeling approach where a leaf cannot hold multiple values or complex structures.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A set of unique bandwidth values
Why it's wrong here
That is a leaf-list, not a leaf.
- ✓
A single integer value representing bandwidth in kilobits per second
Why this is correct
A leaf holds one value; uint32 is appropriate for bandwidth.
- ✗
A grouping of related bandwidth parameters
Why it's wrong here
That would be a container, not a leaf.
- ✗
An ordered list of bandwidth values
Why it's wrong here
A leaf is a single value, not a list.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.