COCOMO Model Software Engineering Questions-Answers

Q1➡ |COCOMO Model
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 ?
i ➥ 10.52 months
ii ➥ 11.52 months
iii ➥ 12.52 months
iv ➥ 14.52 months
Answer: II
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Q2➡ |COCOMO Model
A software company needs to develop a project that is estimated as 1000 function points and is planning to use JAVA as the programming language whose approximate lines of code per function point is accepted as 50. Considering a = 1.4 as multiplicative factor, b = 1.0 as exponential factor for the basic COCOMO effort equation and c = 3.0 as multiplicative factor, d = 0.33 as exponential factor for the basic COCOMO duration equation, approximately how long does the project take to complete ?
i ➥ 11.2 months
ii ➥ 12.2 months
iii ➥ 13.2 months
iv ➥ 10.2 months
Answer: II
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Q3➡ |COCOMO Model
Which of the following is NOT a recognized software project type under COCOMO model?
i ➥ embedded
ii ➥ semidetached
iii ➥ detached
iv ➥ organic
Answer: III
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Q4➡ |COCOMO Model
In a software project, COCOMO (Constructive Cost Model) is used to estimate
i ➥ size, effort and duration based on the cost of the software
ii ➥ effort and cost based on the duration of the software
iii ➥ size and duration based on the effort of the software
iv ➥ effort, cost and schedule based on the size of the software
Answer: IV
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Q5➡ |COCOMO Model
COCOMO model is used for :
i ➥ Product cost estimation
ii ➥ Product complexity estimation
iii ➥ Product quality estimation
iv ➥ All of the above
Answer: I
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Q6➡ |COCOMO Model
The COCOMO model was introduced in the book title “Software Engineering Economics” authored by
i ➥ Abraham Silberschatz
ii ➥ C.J. Date
iii ➥ D.E. Knuth
iv ➥ Barry Boehm
Answer: VI
The Constructive Cost Model (COCOMO) is a procedural software cost estimation model developed by Barry W. Boehm.

So. Correct Answer is (IV).
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Q7➡ |COCOMO Model
COCOMO stands for
i ➥ COmprehensive Construction MOdel
ii ➥ COnstructive Composite MOdel
iii ➥ COnstructive COst MOdel
iv ➥ COmposite COst MOdel

Answer: I

COCOMO stands for Constructive Cost Model ,COCOMO is a procedural software cost estimation model developed by Barry W. Boehm
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Q8➡ |COCOMO Model
The COCOMO model is used for __ .
i ➥ software analysis
ii ➥ software cost approximation
iii ➥ software cost estimation
iv ➥ software design
Answer: III
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Q9➡ |COCOMO Model
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
i ➥ E = a b(KLOC)exp (bb), D = c b(E)exp (db)
ii ➥ D = a b(KLOC)exp (bb), E = c b(D)exp (db)
iii ➥ E = abexp⁡(bb), D = cb(KLOC)exp (db)
iv ➥ E = abexp(D b), D = cb(KLOC)exp (bb)
Answer: I
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Q10➡ |COCOMO Model
Estimation of software development effort for organic software in basic COCOMO is
i ➥ E = 2.0(KLOC)1.05 Per Month
ii ➥ E = 3.4(KLOC)1.06 Per Month
iii ➥ E = 2.4(KLOC)1.05 Per Month
iv ➥ E = 2.4(KLOC)1.07 Per Month
Answer: I
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Q11➡ |COCOMO Model
A company needs to develop digital signal processing software for one of its newest inventions. The software is expected to have 20000 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 2.2 for the software development on embedded systems, while the exponentiation factor is given as 1.50. What is the estimated effort in person-months?
i ➥ 196.77
ii ➥ 206.56
iii ➥ 199.56
iv ➥ 210.68
Answer: I
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Q12➡ |COCOMO Model
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?
i ➥ 234.25
ii ➥ 932.50
iii ➥ 287.80
iv ➥ 122.40
Answer: I
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Q13➡ |COCOMO Model
On an average, the programmer months is given by 3.6 * (KLOC) 1.2 . If so, a project requiring one thousand source instructions will require
i ➥ 3.6PM
ii ➥ 0.36PM
iii ➥0.0036PM
iv ➥ 7.23PM
Answer: I
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Q14➡ |COCOMO Model
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.
i ➥ 25 person months
ii ➥ 75 person months
iii ➥ 62.5 person months
iv ➥ 72.5 person months
Answer: III
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follow important topics
SDLC- software development life cycle
Software engineering Models
Waterfall model
Software Requirement
Software Design
Software Testing
COCOMO Model

Coupling-and-Cohesion
UML(Unified Modeling Language)
Software-configuration-management
Software-Re-engineering
Software Quality
Cyclomatic Complexity
Capability Maturity Model Integration (CMMI)
Software Reliability
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