Some early computers protected the operating system by placing it in a memory partition that could not be modified by either the user job or the operating system itself. Describe two difficulties that you think could arise with such a scheme.

Check the explanation

Explanation:

1.Such operating systems cannot be modified and updating such OS (operating systems) would be almost impossible. This can prove fatal if we detect some serious bug, since there is no way to correct it.

2.The entire password and other credentials of users must be kept in an unsecure and vulnerable memory, since we can’t store it in the protected memory.

i think the answer is a or d

i'm so sorry that's not a question and this isn't an answer