An administrator received an email stating that the OS they are currently supporting will no longer be issued security updates and patches. Which of…

The term "end of life" (EOL) specifically refers to the phase in a software product's lifecycle when the vendor ceases all support. This includes halting the development of patches and security updates. Receiving a notification that security updates will no longer be issued is a direct indicator that the operating system has reached its EOL date. Continuing to use an EOL OS poses a significant security risk as new vulnerabilities will not be remediated by the vendor.

A. Manufacturer support is for the hardware, not the operating system software. The OS vendor (e.g., Microsoft) is responsible for OS updates.

C. Removing a feature from a future version does not affect security updates for the current, supported version of the OS.

D. A new OS release does not immediately trigger the end of life for the previous version; vendors typically support older versions for a period.

1. Microsoft Corporation. (2023). Microsoft Lifecycle Policy. Microsoft Docs. Retrieved from https://learn.microsoft.com/en-us/lifecycle/policies/fixed. The "End of support" section states, "End of support is the date when Microsoft no longer provides fixes, updates, or online technical assistance."

2. CompTIA. (2023). CompTIA A+ Core 2 (220-1202) Exam Objectives. Version 5.0. Section 1.3, "Given a scenario, use features and tools of the Microsoft Windows 10 and 11 operating systems," includes "Windows versions and lifecycles" as a key knowledge area.

3. Souppaya, M., & Scarfone, K. (2013). NIST Special Publication 800-12 Rev. 1: An Introduction to Information Security. National Institute of Standards and Technology. p. 51, Section 4.4.2. Discusses the importance of managing the software lifecycle, including disposal/end-of-life, as a security control. https://doi.org/10.6028/NIST.SP.800-12r1