BCS Exam TM12 Topic 6 Question 101 Discussion

Actual exam question for BCS's TM12 exam

Question #: 101
Topic #: 6

Based on the historical data of 5 past and similar projects, you have calculated these average numbers of defects detected in system testing:

- for each 10000 LOC (lines of code), 200 defects

- for each person-month of development team effort, 49 defects

You want to use this information to perform estimation for a new project.

The project manager tells you that he/she has estimated 20000 new LOC for this new project.

Four developers work for four months on this project before system testing.

During system testing, 797 defects are discovered.

Assume that the system test of this new project is using the same amount of work as spent in the past projects.

Based on this information only, which of the following statement is certainly true about this project?

Number of correct responses: 1

AThe code for the new project contains a higher defect density than the code of the past projects

BThe number of defects found during the system test phase on the new project is approximately proportional to the development team effort

C40000 LOC have been delivered to system testing (against the 20000 LOC planned by the project manager)

DMore LOC than planned have been delivered to system testing with a higher defect density than the past projects

Show Suggested Answer

Suggested Answer: B

by Zona at Sep 16, 2024, 09:12 PM

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Alyssa

2 months ago

Looks like someone's math skills need a little work. 4 developers x 4 months = 16 person-months, not 797 defects!

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Cherilyn

1 months ago

D) More LOC than planned have been delivered to system testing with a higher defect density than the past projects

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Shalon

1 months ago

B) The number of defects found during the system test phase on the new project is approximately proportional to the development team effort

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Chaya

1 months ago

A) The code for the new project contains a higher defect density than the code of the past projects

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Carmen

2 months ago

D is incorrect. While more LOC may have been delivered, the question doesn't state that the defect density is higher than the past projects.

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Leigha

1 months ago

D is incorrect. While more LOC may have been delivered, the question doesn't state that the defect density is higher than the past projects.

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Desirae

1 months ago

D) More LOC than planned have been delivered to system testing with a higher defect density than the past projects

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Carman

1 months ago

C) 40000 LOC have been delivered to system testing (against the 20000 LOC planned by the project manager)

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Martin

1 months ago

B) The number of defects found during the system test phase on the new project is approximately proportional to the development team effort

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Elliot

2 months ago

A) The code for the new project contains a higher defect density than the code of the past projects

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Marica

2 months ago

C is incorrect. The number of LOC delivered is not given, only the planned amount of 20000 LOC.

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Charlette

3 months ago

But if we look at the data provided, it clearly shows that more LOC than planned have been delivered with a higher defect density, so D seems more likely.

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Sharen

3 months ago

A is incorrect. The question states that the new project is similar to the past projects, so the defect density should be similar.

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Lettie

2 months ago

A is incorrect. The question states that the new project is similar to the past projects, so the defect density should be similar.

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Gilberto

2 months ago

C) 40000 LOC have been delivered to system testing (against the 20000 LOC planned by the project manager)

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Jade

2 months ago

B) The number of defects found during the system test phase on the new project is approximately proportional to the development team effort

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Casie

3 months ago

The correct answer is B. The number of defects found during system testing is proportional to the development team effort, which is 4 developers working for 4 months.

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