Q. What does access matrix represent ?

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

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Q. Who can add new rights and remove some rights ?

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Q. What are the three copy rights ?

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Q. Which two rights allow a process to change the entries in a column ?

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Q. Which is an unsolvable problem in access-matrix ?

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Q. Which of the following objects require protection ?

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Q. What is ‘separation’ in security of Operating systems ?

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Q. Which of the following statements are correct?
i) Physical separation – in which process use different physical objects like separate printers
ii) Physical separation – in which process having different security requirement at different times
iii) Logical separation – In which users operate under illusion that no other processes exist
iv) Logical sepration – In which processes conceal their data and computations

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Q. Which of the following statements are correct?
i) Physical separation – in which process use different physical objects like separate printers
ii) Temporal separation – in which process having different security requirement at different times
iii) Physical separation – In which users operate under illusion that no other processes exist
iv) Temporal sepration – In which processes conceal their data and computations

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Q. Which of the following statements are correct?
i) logical separation – in which process use different physical objects like separate printers
ii) cryptographic separation – in which process having different security requirement at different times
iii) Logical separation – In which users operate under illusion that no other processes exist
iv) cryptographic sepration – In which processes conceal their data and computations

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Q. What are various roles of protection ?

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Q. Which of the following objects require protection ?

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Q. Which principle states that programs, users and even the systems be given just enough privileges to perform their task?

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Q. _______ is an approach to restricting system access to authorized users.

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Q. For system protection, a process should access

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Q. The protection domain of a process contains

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Q. If the set of resources available to the process is fixed throughout the process’s lifetime then its domain is

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Q. Access matrix model for user authentication contains

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Q. Global table implementation of matrix table contains

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