A developer is asked to add a new tab to the catalog entity page. They need to find where the entity page's tab structure is defined. Where should they look?

In the app-config.yaml under the catalog section.

In the packages/app/src/App.tsx file, which defines the top-level routing.

In the @backstage/plugin-catalog package's source code in node_modules.

In the entity page component within packages/app/src/components/catalog/EntityPage.tsx.

A developer wants to change the text of the welcome message that appears on the Backstage home page. They know the text is rendered by a React component but are unsure where to find it. Which approach correctly locates the component in the Backstage app source tree?

Check the app-config.yaml file for a welcomeMessage property that controls the home page text.

Search the packages/app/src directory for the JSX string that contains the welcome message text.

Search the node_modules directory for the Backstage core package that exports the HomepageComponent.

Look in the plugins directory under the home plugin's src folder for the default welcome message.

In a standard Backstage app created with `@backstage/create-app`, where are the React components for the app's own pages and layouts typically located?

In the `packages/app/src/components` directory

In the `packages/backend/src` directory

In the `node_modules/@backstage/core-components` directory

In the `plugins/` directory at the root of the repository

A team wants to add a new 'System Health' panel to the Overview tab of their service entity page. They have created a new component called SystemHealthCard. What is the correct way to integrate this component into the existing page?

Import SystemHealthCard into the entity page component and add it as a child within the existing Grid layout.

Register SystemHealthCard in the app-config.yaml under the entityPage section.

Place SystemHealthCard in the public folder and reference it via an iframe in the entity page.

Add SystemHealthCard to the plugins list in the root package.json file.

Certified Backstage Associate (CBA)

Domain 4Objective 3

Make Changes to React Code in Backstage App CBA Practice Questions (Page 2)

Part of the Customizing Backstage domain, which accounts for 32% of the CBA exam. Linux Foundation does not publish an official question count, but from its 90-minute exam (~35–60 total, ~11–19 in this domain), expect 3–5 from this objective — we provide 23 practice questions to prepare you well beyond it. (estimate)

23questions here

5free pages

6concepts

32%of the exam

Questions 6–10

6application · medium
A developer is asked to add a new tab to the catalog entity page. They need to find where the entity page's tab structure is defined. Where should they look?
Select an answer first
7application · medium
A developer wants to change the text of the welcome message that appears on the Backstage home page. They know the text is rendered by a React component but are unsure where to find it. Which approach correctly locates the component in the Backstage app source tree?
Select an answer first
8foundation · easy
In a standard Backstage app created with `@backstage/create-app`, where are the React components for the app's own pages and layouts typically located?
Select an answer first
9foundation · easy
Which command is used to start the Backstage app locally so you can test your React changes?
Select an answer first
10application · medium
A team wants to add a new 'System Health' panel to the Overview tab of their service entity page. They have created a new component called SystemHealthCard. What is the correct way to integrate this component into the existing page?
Select an answer first

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