PROGRAM - BSC
IT
SEMESTER 4
SUBJECT CODE & NAME - BT0081 - Software
Engineering
1. Explain different kinds of
software applications.
Software applications
can be neatly
compartmentalized into different categories.
System software: System
software is a
collection of programs
written to service other
programs. Some system
software processes complex information structures.
Other systems applications
process largely indeterminate
data. It is characterized by heavy interaction with hardware, heavy usage
by multiple users,
concurrent operation that
requires scheduling, resource sharing,
and sophisticated process
management, complex data structures and multiple external interfaces.
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2. What are the Limitations of
waterfall model? Explain in brief.
Limitation of the waterfall model
1. The linear sequential model or waterfall
model assumes the requirement of a system
which can be
frozen (baseline) before
the design begins. This
is possible for systems designed to
automate an existing
manual system. But for a new system, determining the requirements is
difficult as the user
does not even
know the requirements.
Hence, having unchanging
requirements is unrealistic for such projects.
2. Freezing
the requirements usually
requires choosing the
hardware (because it forms
a part of
the requirement specifications) A
large project might take a few years to complete. If the hardware is
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3. Describe the operation of Data
flow model with the help of a block diagram.
Data-flow models
Data-flow model is a
way of showing how data is processed by a system. At the analysis level, they
should be used to model the way in which
data is processed in the
existing system. The
notations used in
these models represents
functional processing, data stores and data movements between
functions.
Data-flow
models are used to show how data flows through a sequence of processing steps.
The data is transformed at each step before moving on to the next
stage. These processing
steps or transformations are
program functions when data-flow diagrams are used to document a
software
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4. Explain the
various activities involved
in Software Reengineering process
model.
Software Reengineering Process Model
Reengineering takes
time; it costs
significant amounts of
money; and it absorbs
resources that might
be otherwise occupied
on immediate concerns. For all of
this reason, reengineering is not accomplished in a few months or
even a few years.
Reengineering of information
systems is an
activity that
will absorb information
technology resources for
many years. That‟s why
every organization needs
a practical strategy
for software reengineering.
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5. Explain Black-Box Testing in
detail.
Black-Box Testing
Black-box testing, also
called behavioral testing, focuses on the functional requirements of the
software. That is, black-box testing enables the software engineer to
derive sets of
input conditions that
will fully exercise
all functional requirements for a program. Black-box testing is not an
alternative to white-box techniques.
Rather, it is
a complementary approach
that is likely to uncover a
different class of errors than white-box methods.
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6. With the help of bock diagram
explain how global problem solving can apply a software-driven approach to
enhance the efficiency of problem solving.
A View of Problem Solving and Software Engineering
As we
know a view of
problem solving utilizing
software technology and the impact of global problem-solving strategies
on softwaredriven problem-solving strategies.
They illustrated how
global problem solving can apply
a software-driven approach to enhance the efficiency of problem solving.
The effectiveness of
these approaches on
business performance in terms
of the business
value created and
software project optimization achieved
was projected. Business
value and project
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