CS323.Case Study 2

QUESTION: In a multiprogramming and time-sharing environment, several users share the system simultaneously. This situation can result in various security problems. Name at least two of these problems. Can we ensure the same degree of security in a time-share machine as we have in a dedicated machine? Explain your answer

ANSWER: The two various security problems in multiprogramming and time sharing environment if the user share it simultaneously are:
1. One of the user may copy the other user's program or memory space of other user which will cause damage in the memory space of other user.For example, an administrator was updating their company website and the other user is also updating their company website.

2.The back up usage may not be controlled completely and could cause deadlock for certain users. For example, if the first user had a first resource and the first user is also waiting for second resource, and second user had second resource and also waiting for the first resource, the deadlock would exist and neither user would be able to make progress in their program, even though how long the time slots they were allocated.