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Oracle Exam 1Z0-599 Topic 2 Question 47 Discussion

Actual exam question for Oracle's 1Z0-599 exam
Question #: 47
Topic #: 2
[All 1Z0-599 Questions]

An application that needs to use a shared library has a deployment descriptor that only specifies the Specification-Version and Extension-Name of the shared library. When the application is deployed, which shared library will be used?

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Suggested Answer: D

An internal application may be configured to always use a minimum version of the same library. Applications that require no specific version can be configured to use the latest version of the library.

Note:

* Specification-Version (a manifest Attributes for Java EE Libraries)

An optional String value that defines the specification version of the shared Java EE library. Referencing applications can optionally specify a required Specification-Version for a library; if the exact specification version is not available, deployment of the referencing application fails.

The Specification-Version uses the following format:

Major/minor version format, with version and revision numbers separated by periods (such as '9.0.1.1')

Referencing applications can be configured to require either an exact version of the shared Java EE library, a minimum version, or the latest available version.

* Implementation-Version (a manifest Attributes for Java EE Libraries)

An optional String value that defines the code implementation version of the shared

Java EE library. You can provide an Implementation-Version only if you have

also defined a Specification-Version.

* Extension-Name (a manifest Attributes for Java EE Libraries)

An optional string value that identifies the name of the shared Java EE library. Referencing applications must use the exact Extension-Name value to use the library.

As a best practice, always specify an Extension-Name value for each library. If you do not specify an extension name, one is derived from the deployment name of the library. Default deployment names are different for archive and exploded archive deployments, and they can be set to arbitrary values in the deployment command.

* After a library is deployed, the extension-name, specification-version and implementation-version of the library can be found in Administration console.


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