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Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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
Transcribed Image Text:4. The following is the memory configuration at a given point in time where dynamic
partitioning scheme is used. The shaded areas indicate memory spaces already allocated
to other processes, while the white spaces are holes (free memory spaces). The next
FOUR (4) memory requests are 30M, followed by 50M, 20M and 40M (in order). Shade
and indicate clearly which memory block will be allocated to each request using the first-
fit and next-fit placement algorithms.
(First-fit)
20M
(Best-fit)
20M
(Next-fit)
20M
1
80M
2
3
4
80M
b. Given a process segment table as follows:
Segment
0
80M
(X is the lastest allocated block)
20M
Base
496
1202
232
2359
1877
20M
20M
Length
691
85
198
109
258
50M
50M
50M
10M
10M
10M
X
30M
30M
30M
Explain the basic use of segment table in process segmentation and its difference with
paging. Give one example on how the information in the given process segment table
is used.
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