Operating System MCQs

1019 MCQs  (Page 90 of 102)

What are the three copyrights?
A. Copy
B. Transfer
C. Limited copy
D. All of the mentioned
Which two rights allow a process to change the entries in a column?
A. Copy and transfer
B. Copy and owner
C. Owner and transfer
D. Deny and copy
Which is an unsolvable problem in access-matrix?
A. Owner override
B. Brute force
C. Access denied
D. Confinement
Which of the following objects require protection?
A. Memory
B. Monitor
C. Power supply unit
D. All of the mentioned
What is ‘separation’ in security of Operating systems?
A. To have separate login for different users
B. To have separate hard disk drive/partition for different users
C. It means keeping one user’s objects separate from other users
D. None of the mentioned
What are the various roles of protection?
A. It is used to detect errors which can prevent contamination of system
B. It is used used to accelerate a process
C. It is used to optimize system downtime
D. None of the mentioned