What characterizes a closed source operating system?

A closed source operating system is characterized by the fact that its source code is not made available to the public. This means that users cannot modify the software to suit their individual needs. The software is typically developed and maintained by a specific organization or company, which keeps the source code proprietary. As a result, users are dependent on the company for updates, support, and customization.

The nature of closed source software ensures that only the developers have the knowledge and permission to alter the code, making it secure but also limiting the flexibility that users might desire to tailor the software for their specific use cases. This contrasts with open-source operating systems, where the source code is available for anyone to view, modify, and distribute.