Question

Suppose a system for office automation is to be designed. It is clear from requirements that there will be five modules of size 0.5 KLOC, 1.5 KLOC, 2.0 KLOC, 1.0 KLOC and 2.0 KLOC respectively. Complexity and reliability requirements are high. Programmer’s capability and experience is low. All other factors are of nominal rating. Use COCOMO model to determine overall cost and schedule estimates. Also calculate the cost and schedule estimates for different phases.

Answer 1

Answer:

COCOMO model to detail mean over all cost and to deal

Answer 2

Answer:

RELY - Ratings are high then value = 1.15

CPLX - Ratings are high then value = 1.15

AEXP - Ratings are low then value = 1.13

PCAP - Ratings are low then value = 1.7

Explanation:

Step 1: The constructive cost model allows the software project managers to estimate the cost and duration that will have invest in the project.

This model is simple and is very well tested and provides in between 20-80 % time estimate accuracy

It estimates the project cost which is derived directly from the person-month effort and by assuming that the

cost is dependent totally on the size of the project files that have been expressed in lines of code (KSLOC)

Step 2: Three types of cocomo model are present

Basic model

Intermediate model

Detailed cococmo model

The basic model focuses on estimating in a quick and rough fashion and are followed by small and medium-sized

software projects

Three modes of Basic model :

Organic

Embedded

Semidetached

Organic consists of a small team of experienced developers and working in a familiar environment

Based on the problem we will look at the organic mode The time might have a team of experienced and less experienced people with little or no history of working together

Step 3: The intermediate model introduces some additional predictors that are used to adjust the nominal cost of the project to the project environment and increase the accuracy

They are called cost drivers and have 4 categories

Product attributes

-RELY

-DATA

-CPLX

Computer Attributes

-TIME

-STOR

-VIRT

-TURN

Personal Attributes

-ACAP

-AEXP

-PCAP

-VEXP

-LEXP

Project attributes

-MODP

-TOOL

-SCED

Each cost drivers are rated for a project and the rating uses a scale and describes the extent the cost drivers ap

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