Business Driven Information Systems
6th Edition
ISBN: 9781260004717
Author: Paige Baltzan
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 7, Problem 4OCQ
To determine
To explain:
The reason for which some market segments are not included in the Uber’s business model.
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Question D.4: FIFO Page Replacement
Consider the following page reference string:
e, c, b, e, a, g, d, c, e, g, d, a
Considering 4 frames, fill in the following table and then answer how many page faults would occur with the
FIFO page replacement algorithm.
RS: reference string; FO: frame 0, F1: frame 1, etc.
Hint: all frames are initially empty, so your first unique pages will all cost one fault each.
Time
1234567891011
12
RS
e
cb
e agd ce g d
a
FO
F1
F2
F3
Page fault?
b) Total # page faults:
c) Briefly (1-2 sentences) explain Belady's Anomaly that can occur in FIFO Page Replacement.
2nd monthly
4th. Year-
exam
Hydraulic Structures 9/12/201
QL
Check the floor thickness
the cutoff depths and the horizontal
floor length for the given regulator using Lane's method.
u/s. W.L.
u/s. B.L
24.25
=
20.50
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x
Discharge Q = 60 m³/s
Waterway S =
Duis
3.5 m
10
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Distance from u/s pile line
Cd = 0.9
C = 6.5
Concrete floor thickness.
D/S.W.L..
D/S. B.L.
24.00
th
=
19.65
m
u/s. canal bed width = 15 m
Horizontal floor length L₁ = 51 m
D
6m
to the gate
silt factor f
under the gate
9.0m
=
0.7
beginning' · of floor.
at
at
end
2.4 ton / m³
3m
1
=
m
I m
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Q.2.
What is the function of
0
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4 Fish ladder
③ D/S cutoff
Lock
The flow net
Intermediate oile
Al-Mansour University College
U/S guid
bank
Consider a system that uses a fixed-partition scheme, with equal partitions of size 2" bytes, and the main
memory has 2¹8 bytes. A process table is maintained with a pointer to the resident partition for each resident
process. How many bits are required for the pointer in the process table? Show all your steps.
Chapter 7 Solutions
Business Driven Information Systems
Ch. 7 - Prob. 1OCQCh. 7 - Prob. 2OCQCh. 7 - Prob. 3OCQCh. 7 - Prob. 4OCQCh. 7 - Prob. 5OCQCh. 7 - Prob. 6OCQCh. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - Prob. 3RQCh. 7 - Prob. 4RQ
Ch. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQCh. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 1CCOCh. 7 - Prob. 2CCOCh. 7 - Prob. 3CCOCh. 7 - Prob. 4CCOCh. 7 - Prob. 1CCTCh. 7 - Prob. 2CCTCh. 7 - Prob. 3CCTCh. 7 - Prob. 4CCTCh. 7 - Prob. 1CBTCh. 7 - Prob. 2CBTCh. 7 - Prob. 3CBTCh. 7 - Prob. 4CBTCh. 7 - Prob. 5CBTCh. 7 - Prob. 6CBTCh. 7 - Prob. 7CBTCh. 7 - Prob. 8CBTCh. 7 - Prob. 9CBTCh. 7 - Prob. 10CBTCh. 7 - Prob. PIAYKBPCh. 7 - Prob. PIIAYKBPCh. 7 - Prob. PIIIAYKBPCh. 7 - Prob. PIVAYKBPCh. 7 - Prob. PVAYKBPCh. 7 - Prob. PVIAYKBPCh. 7 - Prob. PVIIAYKBPCh. 7 - Prob. PVIIIAYKBPCh. 7 - Prob. PIXAYKBP
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Similar questions
- Use the same semaphore notation shown above to describe how we can ensure the execution order of the following process execution graph: P6 P2 P7 P1 P3 P4 P5 Use all of the following semaphores in your answer: s1=0; s2=0; s3=0; s4=0; s5=0; s6=0;arrow_forwardConsider the set of process: Process ID Arrival Time Burst Time P1 0 5 P2 0 10 P3 + 15 P4 18 10 P5 22 20 a) Draw the GANTT chart for the Round Robin time quantum -5) scheduling algorithm. Use the same implementation you used for the programming assignmenti.e. the processes should always run in PID order. Assume there is no context-switch overhead. Show your work for partial credit. b) Write your answer to the following performance metrics given your above CANTT charts. Show your work for partial credit. Average Response time: Average Wating time: Average Turnaround time:arrow_forwardConsider a file currently consisting of 10 blocks. Assume that the file control block and the new block information to be added are already in memory. Calculate how many disk I/O operations are required for the linked allocation strategy, if, for one block, the following conditions hold: HINTS: 1) ignore disk I/O associated with the file control block. 2) each read and each write is an explicit disk I/O. 3) assume a pointer to the end of the list for linked allocation a. The block is added at the beginning. b. The block is added in the middle. c. The block is added at the end. d. The block is removed from the beginning. e. The block is removed from the middle. f. The block is removed from the end.arrow_forward
- Segment Base (original) Length Base (after compaction) 0 100 300 1 1400 600 2 450 100 3 3200 80 4 2200 500 5 3300 33 1. Given the original base addresses, what are the physical addresses for the following logical addresses? If it's an invalid address, just write "invalid". Note that (X, Y) => segment X, offset Y a) (0,350) b) (1,599) c) (2,50) d) (3,81) e) (4,300) f) (5.0) g) (5,34)arrow_forwardProcess Allocation A Max BCDABC D A Available B C PO 3 0 2 1 4 2 4 2 1 0 0 P1 0 1 0 1 0 2 2 2 P2 1 2 0 0 3 2 1 0 P3 0 1 1 2 1 1 1 2 P4 0 0 1 1 1 - 0 2 1 a) What is the content of the matrix Need? Process PO P1 P2 P3 P4 A Need BC D D ° b) Is the system in a safe state? If yes, give a safe sequence of processes. If not, explain why the system is not in a safe state. c) If a request from process P4 arrives for (1,0,0,0), can the request be granted immediately? Please state the reason.arrow_forwardConsider N processes sharing the CPU in a round-robin fashion (N>=2). Assume that each context switch takes S ms and that each time quantum is Q ms. For simplicity, assume that processes never block on any event and simply switch between the CPU and the ready queue. Also, assume that a process is still in the ready queue while a context switch is happening. a) What happens if Q is much smaller than S? What happens when Q→→ ∞, i.e. is much larger than the maximum turnaround time of all the processes? Be brief (1-2 sentences max) in your answer. b) If you use RR for scheduling, which of the three performance metrics (waiting, response, turnaround time) is more likely to be improved? Why (1-2 sentences max)?arrow_forward
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