A Backstage project includes a yarn.lock file. What is the purpose of this file during installation?

It contains the source code of all installed packages.

It locks the exact versions of dependencies to ensure reproducible installs.

It lists the dependencies that are allowed to be updated.

It stores the output of the install command for debugging.

A developer runs 'npm install' in a Backstage project and sees the following output: 'npm ERR! code ERESOLVE' followed by a dependency conflict. What does this error indicate?

There is a conflict between the dependency versions required by different packages.

The network connection to the npm registry is broken.

The node_modules folder is corrupted and needs to be deleted.

The package-lock.json is outdated and needs to be regenerated.

A Backstage project has a build process that runs 'npm install --production' to install only production dependencies. However, the build fails because a package that is listed in 'devDependencies' is needed during the build. What is the best solution?

Add the package to 'optionalDependencies'.

Run 'npm install' without the --production flag during the build.

Use a separate build stage that installs all dependencies before running the build.

Move the package from 'devDependencies' to 'dependencies'.

A developer is troubleshooting a failed 'npm install' in a Backstage project. The error message indicates a network timeout while fetching a package. Which step should the developer try first?

Switch to Yarn and run 'yarn install'.

Run 'npm cache clean --force' and then 'npm install' again.

Delete the package-lock.json and run 'npm install' again.

Retry the 'npm install' command.

Certified Backstage Associate (CBA)

Domain 1Objective 4

Download and Install Dependencies for a Backstage Project with NPM/Yarn CBA Practice Questions (Page 4)

Part of the Backstage Development Workflow domain, which accounts for 24% of the CBA exam. Linux Foundation does not publish an official question count, but from its 90-minute exam (~35–60 total, ~8–14 in this domain), expect 2–3 from this objective — we provide 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

8concepts

24%of the exam

Questions 16–20

16foundation · easy
Which command installs all dependencies listed in a Backstage project's package.json using the default Node.js package manager?
Select an answer first
17foundation · easy
A Backstage project includes a yarn.lock file. What is the purpose of this file during installation?
Select an answer first
18application · medium
A developer runs 'npm install' in a Backstage project and sees the following output: 'npm ERR! code ERESOLVE' followed by a dependency conflict. What does this error indicate?
Select an answer first
19expert · hard
A Backstage project has a build process that runs 'npm install --production' to install only production dependencies. However, the build fails because a package that is listed in 'devDependencies' is needed during the build. What is the best solution?
Select an answer first
20application · medium
A developer is troubleshooting a failed 'npm install' in a Backstage project. The error message indicates a network timeout while fetching a package. Which step should the developer try first?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to CBA

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Linux Foundation. “CBA” is a trademark of its owner, used for identification only.