ALCCS
NOTE:
· Question 1 is compulsory and
carries 28 marks. Answer any FOUR questions from the rest. Marks are indicated against each question.
· Parts of a question should be
answered at the same place.
· All
calculations should be up to three places of decimals.
Q.1 a. What expertise is required for using the following process models
to engineer a software system. Justify?
(i) Incremental Model
(ii) Spiral
Model
b. Why Spiral model is called a
meta model? Discuss how spiral process model incorporates quality aspects into
software development?
c. Verify the
following statements
(i) A
software can be correct and still not reliable
(ii) Adherence
to coding standards is checked during the system-testing phase.
d. What type of coupling exists between the
modules P and Q in the following situations. Justify your answer?
(i) Module
P branches to a local label of module Q.
(ii) Module
Q passes back to P information along with the action that the module P must
take.
e. What type of
cohesion exists within the following module? Justify your answer?
(i) A module
performing tape input, tape output, disk input, disk output, keyboard input,
keyboard output.
(ii) A
module that computes the square root, reverse the string of characters, sort
the item records and calculate the income tax of the employees.
f. Discuss any
four characteristics of a software process?
g. What is
functional testing? Discuss equivalence partitioning and boundary value
analysis technique for functional testing? (7
4)
Q.2 Consider the following problem statement
A Police Vehicle & Control System
ensures that incidents are logged and routed to the most appropriate police
vehicle. Some incidents are more serious than others and require a more urgent
response. The classes of response are identified and incidents are allocated to
these classes. The position of the vehicle is also taken into account so that
the closest vehicle is sent to respond to the incident. Some incidents may
require more than one vehicle and some incidents, like accidents, may require specialized
vehicles. Location of incident may also decide the number of vehicles to be
sent. The emergency services like the fire and ambulance services are
automatically alerted. The details of the reporter of the incident are also
logged. At the end, the report of the police on the incident is produced.
(i) Draw a
Data Flow Diagram?
(ii) Map the Data Flow Diagram to Structure Charts. (9 + 9)
Q.3 a. Differentiate between a software measure, a
software metric and software measurement with the help of examples?
b. Discuss
Expert Judgment and Delphi Cost Estimation Technique?
c. Compute
the function point value for a project where number (Weighting factor) of user
inputs, user outputs, user inquiries, files and external interfaces are 32
(WF=4), 60 (WF=5), 24 (WF=4), 8 (WF=10) and 2 (WF=7) respectively. Assume that
the complexity adjustment values for each of the 14 factors is 3. Also if the
effort, errors, amount and pages of documentation are 100PM, 2000, Rs. 300000
and 1000 pages respectively, then compute the productivity, quality, cost and
documentation.
(5 + 5 + 8)
Q.4 a. Discuss the principle of Abstraction, Encapsulation, Polymorphism and
Inheritance in Object Orientation
with the help of examples?
b. Discuss the difference between Object Oriented
Analysis and Object Oriented Design. What are the important features that
characterize a good Object Oriented Design? (8 + 10)
Q.5 a. Define the Lines of Code and Function Point
metric to measure the size of the software product? State their advantages and
disadvantages?
b. Define
Software Reliability. Why Software reliability is difficult to measure? Discuss
any two metrics for computing software reliability?
c. Discuss Walkthroughs and Inspections as
Software Review Techniques? (6+6+6)
Q.6 For the following
function F
F (a, beg, end, loc)
BEGIN
set left=beg; right=END, loc=beg;
set done=FALSE;
WHILE(NOT done) DO
WHILE((a[loc] £a[right] ) and (loc¹right)) DO
set right=right-1;
END WHILE
IF (loc=right) THEN set done=TRUE;
ELSE IF (a[loc]>a[right] ) THEN
Interchange a[loc] and a[right]
set loc=right
END IF
IF (NOT done) THEN
WHILE ( (a[loc] ³a[left] ) and ( loc ¹ left ) ) DO
set left = left + 1;
END WHILE
IF ( loc = left ) THEN set done =
TRUE;
ELSE
IF (a[loc] < a[left] ) THEN Interchange a[loc]
and a[left]
set loc=left;
END IF;
END IF
END WHILE
END
(i)
Design
a test set using the Branch Coverage and Statement Coverage criterion?
(ii)
Draw
a flow graph, arrive at the cyclomatic complexity and find the set of linearly
Independent paths? (6 + 12)
Q.7 Write short notes on any THREE of the following:
(i)
Unit,
Integration and System Testing
(ii)
COCOMO
Model.
(iii)
Software
Requirement Specification document.
(iv)
Software
Debugging
(v)
CASE
Tools (6+6+6)