Question 1

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? K3 3 credits

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

Answer : B

Question 2

You are estimating the effort for the integration testing activities of a new project. Consider the following factors, which can affect that estimation:

Availability of re-usable test systems and documentation from previous, similar projects

Unexpected timing of components arrival

Stability of the integration test team (no turnover)

Many and geographically distributed sub-teams

Which of the following statements is true?

K2 1 credit

AI. and II. can negatively affect the estimation
III. and IV. usually favor the accuracy of the estimation effort

BII. and III. can negatively affect the estimation

Cand IV. usually favor the accuracy of the estimation effort

DII. and IV. can negatively affect the estimation

Eand III. usually favor the accuracy of the estimation effort

FIII. and IV. can negatively affect the estimation

Gand II. usually favor the accuracy of the estimation effort

Answer : C

Question 3

The following chart plots the cumulative number of defects opened against the cumulative number of defects closed during system testing of a software product.

Which of the following statements is true? K2 1 credit

AThe chart indicates that you have plenty of problems left to find

BThe chart can be used to reveal test progress problems

CThe chart seems to indicate that the defect management process is not working well

DThe chart seems to indicate that the defect management process is working well

Answer : D

Question 4

Which one of the following metrics to be produced needs traceability between the test cases and each item in a proper test basis?

K2 1 credit

ARequirements coverage

BTrends in the lag time from defect reporting to resolution

CMean time between failures for the system

DCumulative number of reported defects versus cumulative number of resolved defects

Answer : A

Question 5

You are managing the system testing for a SOA based system. The integrated system consists of several subsystems:

- A SOA middleware

- A CRM (Customer Relationship Management) system

- A BRM (Billing and Revenue Management) system

- A SMS (Subscriber Management System) system and you performed a risk analysis based on these subsystems.

At the end of the scheduled period for test execution you produce a first classical report based on the traditional metrics of testing. Test pass/fail status and bug status (open/resolved) That table provides you a distorted picture of the quality risk, because there is no indication of the risk level of the failed tests, the tests not run, or the open bugs. Thus, you produce the following table to solve this distortion issue:

In the table above, where you have introduced the concept of risk weighting, the highest risk test or bug report has a score of 1, while the lowest risk test or bug report has a score of 0.04. Which of the following subsystems, based on the risk scores of the table, is most risky? K4 3 credits

ASOA

BCRM

CBRM

DSMS