A. When a process capability is revoked then it won’t be able to reacquire it B. Pointers are maintained for each object which can be used to revoke C. Indirect pointing is done to revoke object’s capabilities D. Master key can be used compare and revoke.
A. List of pointers is maintained with each object B. When revocation is required these pointers are followed C. This scheme is not adopted in multics system D. These point to all capabilities associated with that object
A. Capabilities point indirectly to the objects B. Each capability will not have a unique entry in global C. Table entries cannot be reused for other capabilities D. This system was adopted in multics system
A. It consists of known access rights and interpreted by the system B. A user can of protection system can declare other rights C. Hydra system is not flexible D. Hydra doesn’t provide rights amplification
A. This scheme allows a procedure to be certified as trustworthy B. Amplification of rights cannot be stated explicitly in declaration C. It includes kernel rights such as read D. All of the mentioned
A. Service program can steal users data B. Service program can malfunction and retain some rights of data provided by user C. Calling program can get access to restricted portion from service program D. Calling program gets unrestricted access
A. It is simpler and less powerful than hydra system B. It is more powerful than hydra system C. It is powerful than hydra system D. It is not as secure as hydra system
