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POS 355 Week 2 DQs

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Do you agree or disagree that throughput and capacity are determining factors for effectiveness
of a system more so than processor speed? Why or why not?
Throughput is defined as the total amount of data processed by, passed through a system when
operating at maximum capacity. The data is measured in bits, bytes, blocks, cells, frames, or
packets per second. The throughput is always less than the bandwidth. The rate that the data is
transmitted is less than the signal rate. Capacity refers to storage and the processing capability of
the computer, network, and/or data canter.
With that being defined, I do not think that throughput and capacity are determining factors for
effectiveness of a system more so than processor speed. I think that the entire system has to be
looked at overall in order to determine its effectiveness. Even if a computer operates at it
maximum capacity it may not be as effective if the processor speed is slow. When looking a
computer system, I look at several factors. The processor is one of the main ones, but I also look
at the memory or the maximum upgrade options for the memory. The operating system is also
important. Some O.S. require more resources than others. I found that Windows Vista is a
resource “hog”. Therefore we had to double our RAM in order for our system to run effectively. I
have found that Windows 7 is not as bad. When looking at a system, you have to look at all of
the specifications in order to determine its effectiveness.
What security issues must be resolved now which cannot wait for the next version of
Windows
®
to arrive? Are we looking at a patch or a workaround to solve the present issues?
A security issue is defined by Microsoft as something that “could allow an authenticated local
attacker to compromise your system and gain control over it (Microsoft, 2010).”
Although Windows 7 does not have as many security issues as Windows Vista, Windows 7 still
has some things that need to be worked through to protect users. Microsoft operating systems see
more security issues than any other OSes because they have the largest user base worldwide. One
big issue that I have found in the article referenced is the Windows 7 firewall. Although it is
better than the one introduced in Windows XP, the article states that “the Windows Firewall
needs improvement and it is way behind the third party software firewalls. Microsoft also needs
to ensure that the firewall does not become a system hog.” Firewalls are important for PC users
to protect their computers and data from intruders. They are currently looking for a fix to the
problems and Microsoft has already introduced service packs and security updates for Windows
7. One problem that I personally had was when trying to install these updates my notebook
locked up and continued to loop and never would start back up. I had to restore my computer to
factory settings to resolve the issue.
Partho (2009) Windows 7 Security Issues That The Users Should Know. Retrieved aug 24, 2011
fromhttp://blog.taragana.com/index.php/archive/windows-7-security-issues-that-the-
users-should-know/
Based on Ornes’ (2009) article, what are the improvements that a memristor might have over
current physical and electronic storage devices? Is a memristor a green technology?

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A memristor is only a few nanometers wide. This could enable researchers to build a machine
like the human brain. This could revolutionize computer memory. Memristor is short for memory
resistor. The memristor could make the technology that we currently have smaller. I believe it
would be a green technology because it draws a smaller amount of power than computers do
now. They are energy efficient.I also say that it is green because it is less that would need to be
recycled if something went wrong.
Based on the article by Polakovic and Stefani (2008), what are the main requirements to
reconfigure software on the fly? How do the authors define a computer component?
The main requirement for reconfiguring software on-the-fly are:
1. Identifying the reconfiguration target
2. Target must reach safe state
3. The target must be recaptured and transferred to the new component and the change is
now ready to take place.
4. Make changes
5. Redirect to new components
The authors define a computer component as well defined encapsulation units that isolate state.
They code behind the well-defined access points, or interfaces.

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