Virtual Lab 4
Submit your answers to the following problems through Canvas as a PDF document by the due
date on Monday Week 5 at 11:59 p.m. Also submit any supporting documents such as Excel
spreadsheets.
1. When deciding whether how to acquire an IT technology, it is useful to look at the total
cost of ownership.
a. Research the topic of total cost of ownership with respect to acquiring IT for a
corporation: a software application that will require supporting hardware. Be sure to
include citations to the sources that you use in your answer. Consider three
alternatives:
i. the local build option, buying hardware and custom development of the
necessary software (either in-house or contract);
ii. commercial-off-the-shelf solution, buying hardware and a commercial application;
or
iii. subscribing to a Cloud service.
Identify the factors in each scenario that must be considered as part of the total cost
of ownership, both initial and on-going costs, and direct and indirect costs.
b. Other than total cost of ownership, what other factors do you think must be
considered when deciding between the three options above?
2. Take the set of use cases you developed in the Module 2 virtual lab on UML use case
and activity diagrams. From these use case, develop a list of system functional
requirements like that for the library in the sequence of videos in Georgia Tech: Software
Development Process. Add nonfunctional requirements to your list. From your
requirements, following the analysis in Georgia Tech: Software Development Process,
develop a high-level class diagram. You can use Visual Paradigm to draw the class
diagrams.
3. One software development metric is lines of code (LOC) or source lines of code (SLOC).
Research this topic and answer the questions below. Be sure to include citations of the
sources that you use in your answer.
a. How is the LOC or SLOC metric used in the software development process? That is,
what does SLOC tell you about software that is being developed?
b. How “accurate” is the LOC or SLOC metric? What factors affect the metric?
c. Find estimates for LOC for some popular applications?
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Rivier University
Virtual Lab 2
Using Visual Paradigm to Develop Use Case and Activity
Diagrams
1. Scenario: Banking System
It is collection f the networks of the institutions that provides the financial service to the clients .
The purpose of the banking system is to provide security and the confidence to the economy and
also easy transactions since it can e operated both online and offline. The systems work in manner
such that it manages the money flow between persons and the business. Both the customers,
managers , loan officers, tellers and the cash dispensers can login into the system. The customers
can withdrawal, deposit and request loan from the system. Tellers can clear the checks and open
accounts for the customers. The cash dispensers in case of offline services can confirms
withdrawals and balance inquiry. The loan officers approve the loans and lastly bank managers
can acquire reports from the system.
2. Case Diagram
3. Activity Diagram
In this case we have the balance inquiry and cheque verification
i.
Balance Inquiry (colored blue)
The customers login into the system using username and the password if the password is wrong it
displays password error. If the password is correct the customers enters into the account interface
where the clients chooses inquiry interface. Once the customers select the balance inquiry it is
displayed on the screen.
ii.
Cheque verification (colored purple)
The customer login into the system. Once the logins are confirmed the customers moves t the
traction interface then to the cheque interface where the main activity occurs. The cheque is
verified by the tellers who sends the feedback to the customers on whether it is accepted or
declined.

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