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
A simple stand - alone software utility is to be developed in ‘C’ programming by a team of software experts for a computer running Linux and the overall size of this software is estimated to be 20,000 lines of code. Considering (a, b) = (2.4, 1.05) as multiplicative and exponention factor for the basic COCOMO effort estimation equation and (c, d) = (2.5, 0.38) as multiplicative and exponention factor for the basic COCOMO development time estimation equation, approximately how long does the software project take to complete ?
A
10.52 months
B
11.52 months
C
12.52 months
D
14.52 months
Software-EngineeringCOCOMO-ModelUGC NET CS 2017 Nov- paper-3
Question 3 Explanation: 
Given data,
-- lines of code(LOC)= 20,000 (or 20K)
-- Multiplicative value ‘a’=2.4
-- Exponential ‘b’=1.05
-- Basic COCOMO formula= a*(LOC in K)b
-- Multiplicative value ‘c’=2.5
-- Exponential ‘d’=0.38
-- Development=c*(basic COCOMO result)d
Step-1: Basic COCOMO formula= a*(LOC in K)b
= 2.4*(20)1.05
= 55.756
Step-2: Development= c*(basic COCOMO result)d
= 2.5(55.756)0.38
= 11.52 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
There are 4 questions to complete.

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