Which Junos release would address only bug fixes that were not contained in the 15.1R1 version of code?
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A. B. C. D.A
The correct answer is A. 15.1R2.
Junos software releases come in different forms, and each form denotes a specific feature set and maintenance strategy. There are four different types of Junos releases, as follows:
Maintenance releases (R): These releases are primarily focused on bug fixes and are designated by a number following the major version number, such as 15.1R1, 15.1R2, etc. Maintenance releases are typically produced on a regular basis, such as every three months, and are intended to provide bug fixes and minor feature enhancements.
Feature releases (F): These releases are designated by a letter following the major version number, such as 15.1F1, 15.1F2, etc. Feature releases contain new features and significant enhancements, in addition to bug fixes.
Service releases (S): These releases are designated by a letter following the major version number and are intended to address security vulnerabilities and other issues. Service releases may also contain bug fixes and minor feature enhancements.
Extended releases (X): These releases are intended for use in certain environments that require a longer support cycle. Extended releases are designated by a letter following the major version number and may contain new features, enhancements, and bug fixes.
Given the above information, we can eliminate options B, C, and D as they all indicate releases that are not maintenance releases, and therefore, would not solely address bug fixes. Only option A, 15.1R2, indicates a maintenance release that would address bug fixes not contained in the 15.1R1 release.