SAUTO Network Security Practice Question
When working with Cisco Firepower API, what is the role of the 'ETag' header in an API response?
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
✓
To manage optimistic concurrency.
The ETag (Entity Tag) is used for optimistic concurrency control to ensure that an update is only applied if the resource has not changed since it was last retrieved.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To cache the response.
Why it's wrong here
While related, its primary role is concurrency.
- ✓
To manage optimistic concurrency.
Why this is correct
ETags prevent overwriting concurrent changes.
- ✗
To authenticate the response.
Why it's wrong here
That is handled by tokens.
- ✗
To track the API version.
Why it's wrong here
Versioning is in the URL.
About these practice questions
This SAUTO question is part of Courseiva's 281-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Cisco exam blueprint
This SAUTO 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 SAUTO exam.