Discovering Computers ©2016 (Shelly Cashman Series) (MindTap Course List)
1st Edition
ISBN: 9781305391857
Author: Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Jennifer T. Campbell, Mark Frydenberg
Publisher: Cengage Learning
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Chapter 10, Problem 4CTQ
Explanation of Solution
Network security risks:
The team members considered the following network security risks for resear...
Explanation of Solution
Risks:
Virus programs:
- A virus
program is a small piece of malicious code that can corrupt user files and delete valuable information and pose as a great threat to the network security. - Virus programs devastate the network security and the number of malicious program increases day by day.
- At their worst, these malicious programs have the potential to wipe out user’s hard disk.
Software vulnerabilities:
- When a user is updating the software regularly, software vulnerabilities are possible...
Explanation of Solution
An example Industrial article:
Ransomware:
- Ransomware ranks high on the list of network security risks encountered by both large and small organizations.
- In 2018, Verison’s data breach report states that the Ransomware is one of the top malicious network security risks found in 39 percent of network security related cases...
Explanation of Solution
Steps of network administrator to recover and prevent the damages from future risks:
- First, the network administrator should ensure the Ransomware is entirely deleted from the system...
Explanation of Solution
Hardware and software to safeguard against the network security risks:
- Users can use a good antivirus program with complete protection...
Explanation of Solution
Guidelines for network users to avoid the risks:
- Awareness: The network user should have proper knowledge on the network threats, their risks, what the threats can do, and how to prevent them.
- Scanning: The network user must always scan email attachment or d...
Expert Solution & Answer
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Students have asked these similar questions
I need help in construct a matlab code to find the voltage, the currents, and the watts based on that circuit.
Objective
Implement Bottom-Up Iterative MergeSort and analyze its efficiency compared to
recursive MergeSort. Unlike the recursive approach, which involves multiple function
calls and stack overhead, the bottom-up version sorts iteratively by merging small
subarrays first, reducing recursion depth and improving performance.
Task
1. Implement Bottom-Up Iterative MergeSort
о Start with single-element subarrays and iteratively merge them into larger
sorted sections.
Use a loop-based merging process instead of recursion.
○ Implement an efficient in-place merging strategy if possible.
2. Performance Analysis
Compare execution time with recursive MergeSort on random, nearly
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○ Measure and plot time complexity vs. input size.
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Submission
Explain why the iterative version reduces function call overhead and when
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Code implementation with comments.
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Given a shared data set, we allow multiple readers to read at the same time, and only one single writer can access the shared data at the same time. In the lecture slides, a solution is given. However, the problem is that the write cannot write forever, if there are always at least one reader.
How to ensure that the writer can eventually write? Propose your solution by using semaphores and implemented in Python
from threading import Thread, Semaphore
from time import sleep
from sys import stdout
class Reader(Thread):
def__init__(self, name):
self.n=name; Thread.__init__(self)
defrun(self):
globalnr, nw, dr, dw
whileTrue:
# ⟨await nw == 0 then nr += 1⟩
e.acquire()
ifnw>0:
#if nw > 0 or dw > 0 :
dr+=1; e.release(); r.acquire()
nr+=1
ifdr>0: dr-=1; r.release()
else: e.release()
# read data
stdout.write(self.n+' reading\n')
sleep(1)
# ⟨nr -= 1⟩
e.acquire()
nr-=1
ifnr==0anddw>0:
dw-=1 ; w.release()
else: e.release()
class Writer(Thread):
def__init__(self, name):…
Chapter 10 Solutions
Discovering Computers ©2016 (Shelly Cashman Series) (MindTap Course List)
Ch. 10 - Prob. 1SGCh. 10 - Prob. 2SGCh. 10 - Prob. 3SGCh. 10 - Prob. 4SGCh. 10 - Prob. 5SGCh. 10 - Prob. 6SGCh. 10 - Prob. 7SGCh. 10 - Prob. 8SGCh. 10 - Prob. 9SGCh. 10 - Prob. 10SG
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