1.
Why is it difficult to revoke capabilities ?
Answer: Option 'C'
They are distributed throughout the system
2.
What is incorrect methods of revocation of access rights ?
Answer: Option 'D'
Crucial
3.
What is the reacquisition scheme to revoke capability ?
Answer: Option 'A'
When a process capability is revoked then it won’t be able to reacquire it
4.
What is false regarding Back-Pointers scheme to revoke capability ?
Answer: Option 'C'
This scheme is not adopted in MULTICS system
5.
What is true about Indirection to revoke capability ?
Answer: Option 'A'
Capabilities point indirectly to the objects
6.
What are two capabilities defined in CAP system ?
Answer: Option 'A'
data & software capability
7.
What are characteristics of Cambridge CAP system as compared to Hydra system ?
Answer: Option 'A'
It is simpler and less powerful than hydra system
8.
How can Keys be defined or replaced ?
Answer: Option 'B'
set-key
9.
What are characteristics of Hydra system ?
Answer: Option 'A'
It consist of known access rights and interpreted by the system
10.
What are characteristics of rights amplification in Hydra ?
Answer: Option 'A'
This scheme allows a procedure to be certified as trustworthy
11.
What is the problem of mutually suspicious subsystem ?
Answer: Option 'B'
Service program can malfunction and retain some rights of data provided by user