Question

Consider a multiuser, multiprogramming system. Which issues related to the protection of processes need to be dealt with in this system? If a fixed partitioning of memory is used, discuss how protection can be affected.

Answer 1

Multiuser:- The system that allows more than one user to access a single operating system from different locations.

Multiprogramming :- It is the ability of the operating system that allows a large number of software programs to run and operate simultaneously on the same computer system.

One of the major problem related with multiprogramming in computer system is the security related issues.:-

1)Pilfering and thieving of data:- consider the case where more than one user is accessing the same computer system from remote location. In such a case one can not guarantee about the privacy and security of the data associated with the system. The operations such as creation, deletion and updation of files will require the user access and there will be no assurance that the data is restricted to others users or not. In case of using team viewer in your computer the other users will have full access to create, delete and manipulate their data and thus, it is an issue of security for the data.

2) Improper accounting of system resources:-

When more than one user is accessing the same operating system then there is a chance that due to improper accounting of system will lead to mixed outputs for the users and will lead to thier rework .

If fixed partitioning is used then it helps to get our data protected from getting sealed. But on the other hand each partition can accomodate exactly one process i.e., limited number of processes can be excuted at a time depending upon the number and size of partition available in the memory space.