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Operating System » Protection Access Matrix

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Virtual Memory Thrashing

In domain structure what is Access-right equal to?

A. Access-right = object-name, rights-set
B. Access-right = read-name, write-set
C. Access-right = read-name, execute-set
D. Access-right = object-name, execute-set

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What is meaning of right-set?

A. It is a subset consist of read and write
B. It is a subset of all valid operations that can be performed on the object
C. It is a subset consist of read, write and execute
D. None of the mentioned

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What is Domain?

A. Domain = set of all objects
B. It is a collection of protection policies
C. Domain= set of access-rights
D. None of the mentioned

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What does the access matrix represent?

A. Rows-domains, columns-objects
B. Rows-objects, columns-domains
C. Rows-access list, columns-domains
D. Rows-domains, columns-access list

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What are the three additional operations to change the contents of the access-matrix?

A. Copy
B. Owner
C. Control
D. All of the mentioned

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Who can add new rights and remove some rights?

A. Copy
B. Transfer
C. Limited copy
D. Owner