IT 600
Final Project Milestone One
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Overview: For the
final project, you will evaluate a fictitious organization and develop a set of
operating system requirements and a comprehensive
recommendation for
that organization. The goal is to leverage the cumulative knowledge you acquire
in each module of this course to map operating system
components to
organizational challenges. Each module will have a conceptual base. You will
then complete a hands-on lab by leveraging the workstation you are
using to take this
course. Later, you can apply the knowledge of the specific operating system
commands in those labs to write about how the commands would
be applied in a
real-world analysis of an operating system’s capabilities. Review the Top
Secret, Inc. scenario below carefully to understand the nature of the
problem. They make a
fine product, yet they cannot use it effectively to run their own operation.
Consider the differences between a simple single-purpose
operating system and
a general-purpose operating system and how the concepts you are learning in
this course can help Top Secret, Inc. find a solution.
Scenario: Top Secret,
Inc. (TSI) is a successful operating system company whose customers include
Fortune 500 companies, governments throughout the world,
and major U.S.
contractors. TSI makes embedded operating systems for secure terminals that
control ingress/egress control systems for Wall Street firms,
camera systems for
drone aircraft for government contractors, and alarm systems for top-secret
government installations. TSI operating systems are worldrenowned
for their quick
response to sensor input, highly reliable operation, limited memory
utilization, small size on disk, and low power consumption.
The TSI Operating
System (TSI OS) works exceptionally well on the devices owned by TSI customers,
but it does not work well in the TSI back office. Like many
startup companies,
TSI had to cut costs when it launched a few years ago. To save money, the
company decided not to use enterprise-class operating systems
for its own
workstations and servers. Instead, it chose to use a single-purpose TSI OS,
reasoning that TSI OS was good enough for TSI customers, so it should be
good enough for TSI. Unfortunately, TSI OS lacks many features of a
modern operating system and does not take advantage of the architectural
optimizations
present in the latest hardware. Below is a matrix
of general purpose operating system (GPOS) features and how they map to TSI OS:
GPOS Feature TSI OS Support
for GPOS Feature
Multiprogramming
TSI OS does not
support more than one program running at a time. TSI
customers need one
program resident, and that is the program that
handles sensor input
and (e.g., from cameras and motion sensors). A backoffice
operating system
requires preemptive multitasking and advanced
scheduling features.
Multiprocessing
TSI OS does not
support more than one processor on a physical device.
The operating system
locks up when interrupts are generated by a second
processor. Since most
processors on the market are multicore, TSI has to
purchase old,
decommissioned hardware with single-core processors for
its data center.
Multithreading
TSI OS lacks a system
call interface beyond basic file open, close, read, and
write. As such, it
does not provide a CreateThread() or pthread_create()
API call like Windows
or Linux. Back-office applications that offer
multithreaded
operation hang at launch, so TSI has to use open-source
software so that a
team of TSI software developers can remove multithreading
functionality.
Virtual Memory
TSI OS uses a flat
memory model without paging. As a result, TSI OS
administrators in the
back office frequently have to reboot the operating
systems when they
crash due to insufficient memory.
System Call Interface
As previously
mentioned, TSI OS has only a basic system call interface. This
causes severe
software compatibility issues. To get around this limitation
at TSI headquarters,
developers have had to modify traps to kernel mode
and develop custom
system call responses.
Security
Given the fact that
TSI OS operates based on sensor input, it does not have
any security for log
in, file system modifications, or network security. In
customer
installations, the system is typically located on a closed TCP/IP
network, so operators
can quickly get access to device statistics. As a
result, anyone with
network access at TSI headquarters can log into any
TSI OS server in the
back office.
Device Drivers
TSI software
developers write custom device drivers for each customer.
That does not work
well for the TSI back office because the variety of
devices is so large
and sophisticated, TSI developers are unable to code for
them.
Fault Tolerance
Given the device
driver limitations of TSI software developers, they are
unable to code device
drivers for RAID cards. As a result, all company data
resides on individual
SATA and SCSI drives.
Table 1: Mapping of the features found in a
typical general purpose operating system compared to the TSI OS used at TSI
headquarters for its back-office servers.
The mapping shows
that the choice of a single purpose OS for its back-office function has
limitations that require an enterprise-class, general-purpose operating
system.
Prompt: For this
milestone, conduct an analysis of the situation in which TSI finds itself.
Write a short paper that describes the business-related challenges faced
by the organization. You are not describing solutions to those
challenges just yet.
Search for case studies or articles that discuss similar challenges faced by
organizations with
constraints related to the lack of features listed in Table 1 above. If you
work in the information technology field, describe any similar
operating-system-related
challenges faced by your organization. If you are a consumer of IT services,
describe how any of the features or lack thereof would play
a role in your
productivity at work or school.
Create a short paper
that includes the following critical elements in this assignment:
1) A description of
the business-related challenges faced by the organization
2) One example of a
case study that discusses similar challenges faced by organizations with
constraints related to the lack of features listed in Table 1, or
3) If you work in the
information technology field, describe any similar operating-system-related
challenges faced by your organization, or
4) A description of
how any of the features listed in Table 1 or a lack thereof would play a role
in your productivity at work or school.
Guidelines for
Submission: Your paper must be submitted as a 2–3 page Microsoft Word document
with double spacing, 12-point Times New Roman font, oneinch
margins, and sources
cited in APA format.
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