A development team is building a custom Backstage plugin to display CI/CD pipeline status. They want the plugin to appear as a new tab in the Backstage UI. What is the primary way to add this plugin to the frontend?

Modify the backend to serve the plugin's UI as a static file.

Use a WebSocket connection to dynamically load the plugin's UI from the backend.

Create a frontend plugin package and register it in the app's plugin registry.

Add the plugin's code directly to the core Backstage repository.

A team wants to create a Backstage plugin that shows a custom dashboard on the frontend and also provides a backend API to fetch the dashboard data. What is the recommended way to structure this plugin?

Use a third-party service to host the backend and only create a frontend plugin.

Implement the backend logic directly in the frontend plugin.

Create two separate plugins: one for the frontend and one for the backend.

Create a single plugin package that contains both frontend and backend components.

A Backstage backend plugin needs to authenticate requests from the frontend. What is the standard way to handle authentication in Backstage?

Use Backstage's built-in authentication system with tokens.

Rely on the frontend to authenticate the user and trust the backend.

Use a shared secret that the frontend includes in each request.

Implement custom authentication in each plugin.

A Backstage plugin needs to perform a long-running operation on the backend, such as generating a report. The frontend should not block while waiting for the result. What is the best approach?

Use a server-sent event to push the result when ready.

Use a REST API call that blocks until the operation completes.

Use an asynchronous REST API that returns a job ID, and poll for the result.

Use a WebSocket connection to receive the result asynchronously.

A Backstage deployment is experiencing intermittent failures where the frontend receives 401 Unauthorized errors from the backend, even though users are logged in. The backend logs show that the tokens are valid. What is the most likely cause?

The backend is scaling horizontally and losing session state.

The frontend is using WebSocket instead of REST for authentication.

The backend is behind a load balancer that is not preserving the original request headers.

The frontend is caching old tokens and sending them after they expire.

Certified Backstage Associate (CBA)

Domain 2Objective 4

Understand Backstage Client-Server Architecture CBA Practice Questions (Page 1)

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 1–5

1application · medium
A development team is building a custom Backstage plugin to display CI/CD pipeline status. They want the plugin to appear as a new tab in the Backstage UI. What is the primary way to add this plugin to the frontend?
Select an answer first
2application · medium
A team wants to create a Backstage plugin that shows a custom dashboard on the frontend and also provides a backend API to fetch the dashboard data. What is the recommended way to structure this plugin?
Select an answer first
3application · medium
A Backstage backend plugin needs to authenticate requests from the frontend. What is the standard way to handle authentication in Backstage?
Select an answer first
4expert · hard
A Backstage plugin needs to perform a long-running operation on the backend, such as generating a report. The frontend should not block while waiting for the result. What is the best approach?
Select an answer first
5expert · hard
A Backstage deployment is experiencing intermittent failures where the frontend receives 401 Unauthorized errors from the backend, even though users are logged in. The backend logs show that the tokens are valid. What is the most likely cause?
Select an answer first

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