Certified Backstage Associate 시험 - The Linux Foundation실제시험문제와 답 - 295문항

Question No : 1

You have a Backstage catalog entity descriptor for a Component but want to add a relation to another API entity.
Which section should you update to establish this relationship?

A.status
B.spec
C.metadata
D.relations

정답:
Explanation:
To establish a relationship between entities, such as linking a Component to an API entity, the 'relations' section of the catalog entity descriptor should be updated. This section allows you to define how entities are connected, enabling better navigation and understanding of dependencies within the Backstage software catalog. Properly defined relations facilitate effective management and discovery of interconnected components. For more information, visit the Backstage Software Catalog documentation. https://backstage.io/docs/features/software-catalog/descriptor-format/ Collapse all questions

Question No : 2

Which of the following statements about the 'name' field in the metadata of a Backstage catalog entity is true?

A.Names must be unique across all kinds and namespaces in the catalog.
B.Names can be reused at any time, even if an entity with the same name exists.
C.Names are case sensitive and must follow a strict naming convention.
D.Names must be unique per kind within a given namespace and are case insensitive.

정답:
Explanation:
In Backstage, the 'name' field within the metadata of a catalog entity must be unique per kind within a given namespace. This uniqueness is case insensitive, ensuring that names like 'ServiceA' and 'servicea' are considered the same. Additionally, names cannot be reused unless the original entity is deleted from the registry. This structure helps maintain clear and distinct identifiers for entities, facilitating accurate referencing and management within the catalog. For more information, see https://backstage.io/docs/features/software-catalog/descriptor-format/.

Question No : 3

You need the Owner filter in the CatalogIndexPage to include all owners, not just those who own an entity.
Which prop should you adjust?

A.Add a custom owner filter component to the CatalogIndexPage.
B.Enable 'includeAllOwners' in app-config.yaml.
C.Modify the backend to include all owners in the API response.
D.Set 'ownerPickerMode' to 'all' in the CatalogIndexPage component.

정답:
Explanation:
To have the Owner filter in the CatalogIndexPage include all owners, you should set the 'ownerPickerMode' prop to 'all' in the CatalogIndexPage component. By default, the Owner filter only displays users and groups that own at least one entity in the catalog. Changing this setting allows the filter to list all possible owners, providing a more comprehensive selection. This adjustment is part of the Catalog Customization options available in Backstage, enabling you to tailor the filtering functionality to better suit your organization's needs.
https://backstage.io/docs/features/software-catalog/catalog-customization/

Question No : 4

What is the primary purpose of the Backstage build system?

A.To provide a customizable build environment for Backstage projects
B.To offer an out-of-the-box solution that simplifies tooling setup
C.To replace all existing JavaScript and TypeScript tools
D.To manage deployment configurations for Backstage applications

정답:
Explanation:
The primary purpose of the Backstage build system is to offer an out-of-the-box solution that integrates seamlessly with Backstage projects. This approach allows developers to concentrate on application development rather than spending time configuring and setting up various development tools. By leveraging established tools like Webpack, Rollup, Jest, and ESLint, the build system ensures a smooth and efficient development experience tailored specifically for Backstage. This focus on developer experience is a core aspect of Backstage's design philosophy. More details can be found in the Backstage documentation on the build system. https://backstage.io/docs/tooling/cli/build-system/

Question No : 5

During local development, you receive an error indicating that your 'app-config.yaml' does not adhere to the required configuration schema.
What command can you use to validate your configuration against the schema?

A.backstage-cli config:validate
B.yarn check-config
C.yarn validate-config
D.backstage-cli config:check

정답:
Explanation:
To validate Backstage configuration files against the defined JSON schema, use the command 'backstage-cli config:check'. This ensures that all configuration settings meet the required structure and constraints, preventing runtime errors due to misconfigurations during development or deployment. Detailed instructions can be found in the 'Configuration Schema' section of Backstage's documentation. https://backstage.io/docs/conf/

Question No : 6

Where should the index.md file be located when setting up TechDocs in a repository?

A.In the root directory of the repository
B.Within a /technology/docs directory
C.Under /src/docs in the repository
D.Inside a /docs folder at the root of the repository

정답:
Explanation:
When setting up TechDocs in a repository, the `index.md` file should be placed inside a `/docs` folder at the root of the repository. This structure is recommended as it allows TechDocs to easily locate and build the documentation site. Ensuring that the `index.md` file is correctly placed is essential for generating a coherent and accessible documentation experience. For more information, refer to the TechDocs setup guide in the Backstage documentation.
https://backstage.io/docs/features/techdocs/creating-and-publishing/

Question No : 7

You are developing a backend plugin for Backstage that needs to log messages during startup.
Which core service should you declare as a dependency?

A.coreServices.database
B.coreServices.metrics
C.coreServices.auth
D.coreServices.logger

정답:
Explanation:
When developing a backend plugin that requires logging during startup, the 'coreServices.logger' should be declared as a dependency. This core service provides the necessary logging functionality, allowing the plugin to output informational messages or errors during its initialization phase. Properly utilizing the logger service ensures that the plugin can communicate its state and any issues effectively within the Backstage backend environment. https://backstage.io/docs/backend-system/architecture/plugins/

Question No : 8

Which feature of TechDocs allows you to host documentation independently from the codebase within Backstage?

A.Documentation-Only Sites
B.Software Templates
C.Software Catalog
D.TechDocs Addon Framework

정답:
Explanation:
Documentation-Only Sites in TechDocs enable the hosting of documentation that is not directly tied to a specific code repository. This allows for centralized documentation management and the ability to maintain documentation independently from software components. This feature is useful for overarching documentation like guidelines, policies, or cross-cutting topics. More information can be found in the Backstage TechDocs documentation at https://medium.com/@susovanpanja/build-your-own-technical-documentation-portal-using-backstage-part-1-343b6dcf1dd7.

Question No : 9

What roles do policies and processors play in the processing phase of Backstage's catalog?

A.Policies define rules for entity shape, and processors validate, analyze, and mutate entity data.
B.Policies render entities in the frontend, and processors handle user interactions.
C.Policies fetch raw entity data, and processors store it in the database.
D.Policies handle authentication, and processors manage entity visibility.

정답:
Explanation:
In the processing phase of the Backstage catalog backend, policies and processors have distinct but complementary roles. Policies are responsible for setting baseline rules regarding the structure and specifications of entities, ensuring they adhere to required standards. Processors, on the other hand, take the raw entity data, validate it against these policies, analyze it, and potentially mutate it into its final form. This systematic approach ensures that all entities within the catalog are consistent, valid, and ready for consumption through the catalog API. For more insights, refer to the Backstage Catalog documentation: https://backstage.io/docs/features/software-catalog/life-of-an-entity/

Question No : 10

A user has a catalog-info.yaml file in the directory /project/components/serviceA/. Within this YAML file, they want to reference a file named api-definition.yaml located in the same directory using a substitution.
Which placeholder should they use to embed the parsed YAML content?

A.$text: ./api-definition.yaml
B.$json: ./api-definition.yaml
C.$yaml: ./api-definition.yaml
D.$parsed: ./api-definition.yaml

정답:
Explanation:
In this scenario, the developer aims to embed the contents of a YAML file as a parsed structure within the catalog-info.yaml descriptor. Using the $yaml placeholder with the relative path ./api-definition.yaml ensures that Backstage interprets and embeds the content as YAML. This allows for structured data integration directly into the descriptor configuration. Other placeholders like $text or $json would either not parse the YAML correctly or attempt to treat it as a different format, leading to potential errors. For more guidance, refer to Backstage's documentation on customizing substitutions. https://backstage.io/docs/features/software-catalog/descriptor-format/

Question No : 11

What is the primary role of processors in Backstage's catalog configuration?

A.To deploy Backstage applications
B.To perform catalog ingestion tasks such as reading, parsing, transforming, and validating entity data
C.To customize the frontend appearance of Backstage
D.To manage user authentication and authorization

정답:
Explanation:
Processors in Backstage's catalog configuration are responsible for ingesting entity data from various sources. They handle tasks such as reading raw data from remote sources, parsing the data into the appropriate format, transforming it as necessary, and validating the information to ensure it meets the required standards before adding it to the catalog. This automation facilitates efficient and accurate management of software entities within Backstage. For more details, refer to the Backstage Catalog documentation: https://backstage.io/docs/features/software-catalog/configuration/

Question No : 12

When creating a new backend plugin in Backstage, which function is used to instantiate the plugin?

A.initializeBackendPlugin
B.instantiatePlugin
C.createPluginBackend
D.createBackendPlugin

정답:
Explanation:
To create a new backend plugin in Backstage, the 'createBackendPlugin' function from the '@backstage/backend-plugin-api' package is used. This function initializes the plugin with required properties such as 'pluginId' and a 'register' method, ensuring proper integration within the Backstage backend architecture. For more details, refer to the Backstage documentation on backend plugins. https://backstage.io/docs/backend-system/architecture/plugins/

Question No : 13

Which feature of Backstage enhances its customizability by allowing developers to integrate various infrastructure and development tools?

A.Software Templates
B.TechDocs
C.Plugin Support
D.Software Catalog

정답:
Explanation:
Plugin Support is a key feature of Backstage that significantly enhances its customizability. By leveraging a collection of plugins, developers can integrate a wide range of infrastructure and software development tools directly into Backstage. This modular approach allows organizations to tailor Backstage to their specific needs by exposing different tools and services as seamless features within the platform. The robust plugin ecosystem ensures that Backstage can adapt to diverse development environments and workflows. For more details, visit the Backstage Plugin documentation: https://addozhang.medium.com/exploring-backstage-a-quick-start-guide-205742f8c92b

Question No : 14

What are the default YAML configuration files used by Backstage for general settings and local overrides?

A.backstage.yaml and backstage.local.yaml
B.app-config.yaml and app-config.local.yaml
C.config.yaml and config.local.yaml
D.settings.yaml and settings.local.yaml

정답:
Explanation:
Backstage uses 'app-config.yaml' as the main configuration file and 'app-config.local.yaml' for local environment overrides. These files contain plain YAML configurations, with support for environment variables and file references for sensitive data. These defaults help in structuring the configuration management consistently across deployments. For more details, refer to Backstage's 'Writing Configuration' section. https://backstage.io/docs/conf/

Question No : 15

Where can you access the Software Templates feature in a locally developed Backstage instance?

A.http://localhost:3000/create
B.http://localhost:3000/catalog/templates
C.http://localhost:3000/software-templates
D.http://localhost:7007/templates

정답:
Explanation:
In a local Backstage development environment, the Software Templates feature is accessible under the '/create' route. By navigating to https://backstage.io/docs/features/software-templates/, developers can access the interface to create new components using predefined templates. This location is consistent with the default setup for Backstage and allows for easy access to the templating functionalities during development. For more information, refer to the Backstage Documentation on Software Templates.

The Linux Foundation Certified Backstage Associate 시험