COCOMO-Model

Question 1

Consider the basic COCOMO model where E is the effort applied in person-months, D is the development time in chronological months, KLOC is the estimated number of delivered lines of code (in thousands) and ab, bb, cb, db have their usual meanings. The basic COCOMO equations are of the form

A
E = a b(KLOC)exp (b b, D = c b(E)exp (d b)
B
E = a b(KLOC)exp (b b, D = c b(E)exp (d b)
C
E = a bexp⁡(b b), D = c b(KLOC)exp (d b)
D
E = a bexp(D b), D = c b(KLOC)exp (b b)
Software-EngineeringCOCOMO-ModelGATE 2015 [Set-2]Video-Explanation
Question 1 Explanation: 
Basic COCOMO model takes the form
Effort applied (E) = ab(KLOC)bb
Development time (D) = cb(E)db
Question 2

A company needs to develop digital signal processing software for one of its newest inventions. The software is expected to have 40000 lines of code. The company needs to determine the effort in person-months needed to develop this software using the basic COCOMO model. The multiplicative factor for this model is given as 2.8 for the software development on embedded systems, while the exponentiation factor is given as 1.20. What is the estimated effort in person-months?

A
234.25
B
932.50
C
287.80
D
122.40
Software-EngineeringCOCOMO-ModelGATE 2011
Question 2 Explanation: 
Note: Out of syllabus.
Question 3
The number of function points of a proposed system is calculated as 500. Suppose that the system is planned to be developed in Java and the LOC/FP ratio of Java is 50. Estimate the effort (E) required to complete the project using the effort formula of basic COCOMO given below : E = a(KLOC)b Assume that the values of a and b are 2.5 and 1.0 respectively.
A
25 person months
B
75 person months
C
62.5 person months
D
72.5 person months
Software-EngineeringCOCOMO-ModelUGC NET CS 2016 July- paper-3
Question 3 Explanation: 
Given data,

-- Functional points(FP)= 500

-- Lines of code(LOC) / FP = 50

-- Effort(E) = a(KLOC)b

-- a = 2.5 and b = 1.0

-- KLOC=?

Step-1: Find out KLOC

KLOC= ((LOC / FP)*FP)/1000

= 25

Where K=1000

Step-2: Find out Effort(E)= 2.5(25)1.0

= 62.5 person months.

Question 4
Which of the following is NOT a recognized software project type under COCOMO model?
A
embedded
B
semidetached
C
detached
D
organic
Software-EngineeringCOCOMO-ModelAPPSC-2016-DL-CS
Question 5

In a software project, COCOMO (Constructive Cost Model) is used to estimate

A
effort, cost and schedule based on the size of the software
B
size and duration based on the effort of the software
C
effort and cost based on the duration of the software
D
size, effort and duration based on the cost of the software
Software-EngineeringCOCOMO-ModelAPPSC-2016-DL-CA
There are 5 questions to complete.

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