Question 1 : What are two capabilities defined in CAP system ?
1. data & software capability
2. address & data capability
3. hardware & software capability
4. software capability
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Question 2 : What are characteristics of Cambridge CAP system as compared to Hydra system ?
1. It is simpler and less powerful than hydra system
2. It is more powerful than hydra system
3. It is powerful than hydra system
4. It is not as secure as Hydra system
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Question 3 : What is the problem of mutually suspicious subsystem ?
1. Service program can steal users data
2. Service program can malfunction and retain some rights of data provided by user
3. Calling program can get access to restricted portion from service program
4. Calling program gets unrestricted access
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Question 4 : What are characteristics of rights amplification in Hydra ?
1. This scheme allows a procedure to be certified as trustworthy
2. Amplification of rights cannot be stated explicitly in declaration
3. It includes kernel rights such as read
4. All of the mentioned
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Question 5 : How can Keys be defined or replaced ?
1. create [keyname] [bits].
2. set-key
3. Key
4. MAKE [Key Name].
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Question 6 : What is true about Indirection to revoke capability ?
1. Capabilities point indirectly to the objects
2. Each capability will not have a unique entry in global
3. Table entries cannot be reused for other capabilities
4. This system was adopted in MULTICS system
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Question 7 : What is false regarding Back-Pointers scheme to revoke capability ?
1. List of pointers is maintained with each object
2. When revocation is required these pointers are followed
3. This scheme is not adopted in MULTICS system
4. These point to all capabilities associated with that object
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Question 8 : Why is it difficult to revoke capabilities ?
1. They are too many
2. They are not defined precicely
3. They are distributed throughout the system
4. None of the mentioned
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Question 9 : What is incorrect methods of revocation of access rights ?
1. Immediate/Delayed
2. Selective/General
3. Partial/total
4. Crucial
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Question 10 : What is need of protection ?
1. Prevent mischievous violation
2. Prevent and intentional
3. Ensure that each program component uses resources allotted to it only
4. All of the mentioned
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