1) Describe the significance of memory protection. Explain internal and external fragmentation.
2) Describe the principles of combined paging and segmentation scheme.
3) Consider the following segment table:
Segment base length
0 219 600
1 2300 14
2 90 100
3 1327 580
4 1952 96
What are the physical addresses for the following logical addresses?
a) 0,430
b) 1, 10
c) 2, 500
d) 3, 400
e) 4, 112
4) Describe the schemes for defining the logical structure of a directory.
5) Consider the following page reference string:
1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3, 2, 1, 2, 3, 6.
How many page faults will occur for the replacement algorithms given below, assuming five frames? Keep in mind all frames are at first empty, first unique pages will all cost one fault each.
i) LRU replacement
ii) FIFO replacement
iii) Optimal replacement
6) Write brief notes on the following in context to windows NT system:
(i) Win 32 Environment
(ii) Internal layout of file system
(iii) Name resolution in TCP/IP Networks
(iv) Interprocess Communication