Solutions to Assignment 2 INF

Solutions to assignment no.2


Operating 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.