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Solutions to Assignment 2 INF
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- University Of South Africa (Unisa)
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Solutions to assignment no.2Operating Systems and Architecture
COS3721
Semesters 2021
Computer Science Department,
School of Computing
This tutorial letter contains important information
about your module.
, Question 1
1.1 yes. When applying the four deadlock conditions a deadlock can still occur.
1.2
a. safe state<T4, T0, T1, T2, T3>
b. safe state <T2, T3, T4, T0, T1>
c. The state is unsafe as there is no need that is less than or equal to the available(work).
d. safe state <T3, T4, T0, T1, T2>
Question 2
2.1
a. Required relocation of the entire program space.
b. without requiring relocation of the programs address space.
2.2
a. page number = 20, offset = 725
b. page number = 118, offset = 525
c. page number = 237, offset = 12
d. page number = 16093, offset = 83
e. page number = 26614, offset = 451
2.3
a. 220 entries.
2. 217 entries or 128K entries.
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