OS Protection
What is the reacquisition scheme to revoke capability?
When a process capability is revoked then it won’t be able to reacquire it
Pointers are maintained for each object which can be used to revoke
Indirect pointing is done to revoke object’s capabilities
Master key can be used compare and revoke.
When a process capability is revoked then it won’t be able to reacquire it
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If the set of resources available to the process is fixed throughout the process’s lifetime then its domain is _____________A. static
B. dynamic
C. neither static nor dynamic
D. none of the mentioned
What are the three copyrights?
A. copy
B. transfer
C. limited copy
D. all of the mentioned
Which of the following objects require protection?
A. CPU
B. Printers
C. Motherboard
D. All of the mentioned
What is the need of protection?
A. Prevent mischievous violation
B. Prevent and intentional
C. Ensure that each program component uses resources allotted to it only
D. All of the mentioned
In asymmetric encryption _____________
A. same key is used for encryption and decryption
B. different keys are used encryption and decryption
C. no key is required for encryption and decryption
D. none 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
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
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