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1) Describe the significance of memory protection. describe 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) prepare 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

Operating System, Computer Science

  • Category:- Operating System
  • Reference No.:- M910406

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