14. a. b. Consider a logical address space of eight pages of 1024 words each, mapped onto a physical memory of 32 frames. How many bits are there in the logical address and in the physical address? (4 marks) Describe segmentation-based virtual memory. You should consider the components of a memory address, the segment table and its contents, and how the final physical address is formed in your answer (6 marks) Alice can read and write to the file X, can read the file Y, and can execute the file Z. Bob can read X, can read and write to Y, and cannot access Z. a. Write a set of Access Control Lists for this situation. Which list is associated with which file? (3 marks) Write a capability list of capabilities for this situation. With what is each list associated? (2 marks) If Bob is editing file Y. He wants to be sure that the editor cannot access any other file. Could this be done in ACL based system? If so, how? If not, why not? (5 marks) b.