Free ISTQB ATM Exam Questions

Question 1

Assume you are working on a CAS (Conditional Access System) for Pay-TV that allows the access,

selection and transfer of services and media to authorized users. Authorized users can choose their

services through different channels: Web Customer Portal, IVR (Interactive Voice Response), Call Centre

and SMS. The system uses a Smart Card to receive and decrypt the broadcasted encrypted control words

which allow decrypting pay-per-view TV. Every authorized user must have a Smart Card and a Set-Top Box

to view the contents.

The following is an excerpt from the product risk analysis document:

Both likelihood and impact have been rated on the following scale: (1 – Very low, 2 – Low, 3 – Medium, 4 –

High, 5 – Very High).

The required test environment and code have been delivered. All test cases for each identified product risk

item have been written and are ready to be executed. The Database used to contain the Smart Cards is

empty and so only new Smart Cards can be used during test execution.

A Smart Card can only be activated if it has been previously pre-activated. This means the post-conditions

for the execution of the test cases to test the pre-activation of the Smart Card are the pre-conditions for

activation of the Smart Card.

Which of the following statements represents the most effective contribution of the stakeholders to the

completion of the failure mode analysis table?

A : aircraft pilot and the customer representative should contribute to assess the detection. The chief software engineer, the system architect and the expert tester should contribute to assess the priority.

B : aircraft pilot and the customer representative should contribute to assess the priority. The chief software engineer, the system architect and the expert tester should contribute to assess the detection.

C : system architect and the chief software engineer should contribute to assess the priority. The expert tester is the only one who should contribute to assess the detection.

D : aircraft pilot is the only one qualified to contribute to assess the priority and thus should be assigned this task. The customer representative should contribute to assess the detection.

Answer: B

Question 2

Assume you are the Test Manager in charge of independent testing for avionics applications.

You are in charge of testing for a project to implement three different CSCI (Computer Software

Configuration Item):

- a BOOT-X CSCI that must be certified at level B of the DO-178B standard

- a DIAG-X CSCI that must be certified at level C of the DO-178B standard

- a DRIV-X CSCI that must be certified at level A of the DO-178B standard

These are three different software modules written in C language to run on a specific hardware platform.

You have been asked to select a single code coverage tool to perform the mandatory code coverage

measurements, in order to meet the structural coverage criteria prescribed by the DO-178B standard. This

tool must be qualified as a verification tool under DO-178B.

Since there are significant budget constraints to purchase this tool, you are evaluating an open-source tool

that is able to provide different types of code coverage. This tool meets perfectly your technical needs in

terms of the programming language and the specific hardware platform (it supports also the specific Ccompiler).

The source code of the tool is available.

Your team could easily customize the tool to meet the project needs. This tool is not qualified as a

verification tool under the DO-178B.

Which of the following are the three main concerns related to that open-source tool selection?

A : es the tool support all the types of code coverage required from the three levels A, B, C of the DO178B standard?

B : es the tool have a good general usability?

C : at are the costs to qualify the tool as a verification tool under the DO-178B?

D : the installation procedure of the tool easy?

E : es the tool require a system with more than 4GB of RAM memory?

F : the licensing scheme of the tool compatible with the confidentiality needs of the avionics company?

Answer: A,C

Question 3

Assume you have some data related to confirmation testing during system testing of a past project.

In that project 240 bug reports have been opened once, 80 were opened twice, 10 were opened three times

and no bug reports have been opened more than three times.

You estimate that a bug report, which has failed its confirmation test, costs, on average, 3 person-hours.

Which of the following statements correctly describe the value of these confirmatory testing activities based

on cost of quality?

A : 300 person-hours have been spent on the project during the system testing phase, because of the failed confirmation tests and this cost belongs to the costs of internal failure

B : 340 person-hours have been spent on the project during the system testing phase, because of the failed confirmation tests and this cost belongs to the costs of external failure

C : 340 person-hours have been spent on the project during the system testing phase, because of the failed confirmation tests and this cost belongs to the costs of internal failure

D : 300 person-hours have been spent on the project during the system testing phase, because of the failed confirmation tests and this cost belongs to the costs of detection

Answer: A

Question 4

Which of the following statements describing the consequences of specifying test conditions at a detailed level is NOT true?

A : an environment where the test basis is continuously changing, it is recommended to specify test conditions at a detailed level in order to achieve a better maintainability

B : specification of test conditions at a detailed level can be effective when no formal requirements or other development work products are available

C : specification of test conditions at a detailed level can require the implementation of an adequate level of formality across the team

D : r system testing, the specification of test conditions at a detailed level, carried out early in the project as soon as the test basis is established, can contribute to defect prevention

Answer: A

Question 5

Which of the following information would you expect to be the most useful to perform a defect clustering analysis?

A : trend in the lag time from defect reporting to resolution

B : defect component information

C : lifecycle phase in which the defect has been introduced

D : defect removal efficiency information

Answer: B