A Backstage backend is experiencing high CPU usage and slow response times. The frontend is static and hosted on a CDN. The team suspects the backend is the bottleneck. Which action would be most effective to improve performance?

Scale the backend horizontally by adding more instances.

Move the backend to a larger virtual machine.

Add a caching layer between the frontend and backend.

Optimize the frontend to make fewer API calls.

How does the Backstage backend support extensibility through plugins?

Backend plugins are compiled into the frontend bundle to improve performance.

Backend plugins replace the core Backstage backend entirely.

Plugins are only allowed on the frontend, and the backend remains fixed.

Backend plugins add new REST API endpoints and services to the backend.

In a typical REST API request from the Backstage frontend to the backend, what is the correct sequence of events?

The backend pushes data to the frontend without any request.

The frontend opens a direct database connection and queries data.

The backend sends an HTTP request to the frontend, and the frontend responds.

The frontend sends an HTTP request, the backend processes it and returns an HTTP response.

What is a key characteristic of the Backstage frontend as a single-page application (SPA)?

It requires a server-side rendering engine to generate HTML for each request.

It loads a single HTML page and dynamically updates content without full page reloads.

It is a collection of static HTML pages linked together.

It reloads the entire page for every navigation to ensure fresh data.

Certified Backstage Associate (CBA)

Domain 2Objective 4

Understand Backstage Client-Server Architecture CBA Practice Questions (Page 4)

Part of the Backstage Infrastructure domain, which accounts for 22% of the CBA exam. Linux Foundation does not publish an official question count, but from its 90-minute exam (~35–60 total, ~8–13 in this domain), expect 2–3 from this objective — we provide 24 practice questions to prepare you well beyond it. (estimate)

24questions here

5free pages

6concepts

22%of the exam

Questions 16–20

16expert · hard
A Backstage backend is experiencing high CPU usage and slow response times. The frontend is static and hosted on a CDN. The team suspects the backend is the bottleneck. Which action would be most effective to improve performance?
Select an answer first
17foundation · easy
How does the Backstage backend support extensibility through plugins?
Select an answer first
18foundation · easy
In a typical REST API request from the Backstage frontend to the backend, what is the correct sequence of events?
Select an answer first
19foundation · easy
What is a key characteristic of the Backstage frontend as a single-page application (SPA)?
Select an answer first
20foundation · easy
Which protocol is commonly used for real-time, bidirectional communication between the Backstage frontend and backend?
Select an answer first

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