Description
[100 points] Problem Set
1. [20 points] What are the main differences between capability lists and access lists?
2. [20 points] Consider a computing environment where a process is given the privilege
of accessing an object only n times. Suggest a scheme for implementing this policy.
3. [20 points] Capability lists are usually kept within the address space of the user.
How does the system ensure that the user cannot modify the contents of the list?
4. [20 points] 14.3 Consider a computer system in which computer games can be
played by students only between 10 P.M. and 6 A.M., by faculty members between 5
P.M. and 8 A.M., and by the computer center staff at all times. Suggest a scheme for
implementing this policy efficiently.
5. [20 points] 14.8 Discuss the need for rights amplification in Hydra. How does this
practice compare with the cross-ring calls in a ring-protection scheme?
Custom Work, Just for You!
Can’t find the tutorial you need? No worries! We create custom, original work at affordable prices! We specialize in Computer Science, Software, Mechanical, and Electrical Engineering, as well as Health Sciences, Statistics, Discrete Math, Social Sciences, Law, and English.
Custom/Original Work Essays cost as low as $10 per page.
Programming Custom Work starts from $50.
Get top-quality help now!
