Operating system mcqs protection revocation access rights
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What are the two capabilities defined in CAP system?
data & software capability
address & data capability
hardware & software capability
What is true about Indirection to revoke capability?
Capabilities point indirectly to the objects
Each capability will not have a unique entry in global
Table entries cannot be reused for other capabilities
This system was adopted in MULTICS system
How can Keys be defined or replaced?
create [keyname] [bits]
MAKE [Key Name]
What are the characteristics of Cambridge CAP system as compared to Hydra system?
It is simpler and less powerful than hydra system
It is more powerful than hydra system
It is powerful than hydra system
It is not as secure as Hydra system
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.
There are 10 questions to complete.