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ISTQB Certified Tester Advanced Level Technical Test Analyst Sample Questions (Q154-Q159):

NEW QUESTION # 154
You are a senior Technical Test Analyst on a new government project for the Air Force. The software you are testing is used to control the hydraulics for the landing gear for a supersonic, stealth aircraft. You are responsible for organizing the white-box testing that will be performed for this project.
Which of the following would be the most appropriate technique to apply in this situation?

A. Decision / condition coverage
B. Modified condition / decision coverage
C. Maximum condition / multiple decision coverage
D. Multiple condition coverage

Answer: B

Explanation:
In a high-risk environment such as controlling aircraft hydraulics, Modified Condition/Decision Coverage (MC/DC) is crucial. This technique ensures that all conditions within a decision have been tested independently, which is vital for understanding the impact of each condition on the decision's outcome.
MC/DC is often required in safety-critical systems like aerospace software to achieve a high level of confidence in the software's reliability and safety .

NEW QUESTION # 155
The stakeholders in a new system want its mean time between failure to be three months or longer, with a mean time to repair the system of ten minutes or less when it does fail. When planning and specifying reliability tests to be performed before release, which ONE of the following is a factor that must be considered?

A. Defining the replaceability requirements
B. Monitoring reliability in production
C. Determining the target availability for the system
D. Configuring a production-like test environment

Answer: C

Explanation:
Analysis:
For a system to meet its reliability requirements, it must maintain a mean time between failure (MTBF) of three months or longer and a mean time to repair (MTTR) of ten minutes or less. When planning and specifying reliability tests, several factors must be considered to ensure these requirements are met.
Key Factor:
B: Determining the target availability for the system:
* Availability is a critical factor that encompasses both the MTBF and MTTR. Availability is calculated based on the uptime and downtime of the system, which directly correlates with MTBF and MTTR.
Determining the target availability helps ensure that the system can meet the required reliability standards by specifying acceptable levels of uptime and downtime.
Explanation of Incorrect Options:
* A. Defining the replaceability requirements:
* Replaceability pertains to the ease with which components can be replaced or updated. While important for maintainability, it is not the primary focus for reliability testing in this context.
* C. Monitoring reliability in production:
* Monitoring in production is important for ongoing reliability assessment but is not a primary consideration when planning and specifying tests before release.
* D. Configuring a production-like test environment:
* This is essential for accurate testing but is a logistical consideration rather than a direct factor in the reliability requirements.
References:
The ISTQB CTAL-TTA syllabus and standard practices in reliability testing emphasize the importance of availability metrics in planning reliability tests.
Sources:
* ISTQB-CTAL-TTA Syllabus
* General knowledge on reliability testing and availability.

NEW QUESTION # 156
Consider the simplified logic below for crediting money to a bank account.
Receive money and account number to be credited
IF account number is valid
IF customer account is active
Store current account balance as oldBalance
Credit money to account
IF oldBalance < zero
IF balance now >= zero
Set message "Overdraft cleared"
ELSE
Set message "A/c overdrawn"
ENDIF
ELSE
Set message = "You have more money"
ENDIF
IF account holder is VIP customer
Send message by email to customer
ENDIF
ELSE
Set message "A/c inactive"
Send message by email to supervisor
ENDIF
ELSE
Add 1 to count of invalid inputs
ENDIF
What is the minimum quantity of test cases that will give 100% statement coverage?

A. 0
B. 1
C. 2
D. 3

Answer: A

Explanation:
To determine the minimum quantity of test cases that will give 100% statement coverage, we need to ensure that each executable statement in the code is executed at least once. Let's analyze the code step by step to identify the necessary paths:
* Valid account number and active account:
* Crediting money to the account.
* Old balance < zero, new balance >= zero (overdraft cleared).
* VIP customer: message sent by email.
* Valid account number and active account:
* Crediting money to the account.
* Old balance < zero, new balance < zero (account overdrawn).
* Non-VIP customer.
* Valid account number and active account:
* Crediting money to the account.
* Old balance >= zero.
* VIP customer: message sent by email.
* Valid account number but inactive account:
* Set message "A/c inactive".
* Send message by email to supervisor.
* Invalid account number:
* Add to the count of invalid inputs.
Considering these scenarios, we can see that the minimum number of test cases to cover all statements is three:
* Path with a valid, active account, old balance < zero, new balance >= zero, and VIP customer.
* Path with a valid, active account, old balance >= zero, and non-VIP customer.
* Path with an inactive account or invalid account number.
Therefore, the correct answer is D. 3.

NEW QUESTION # 157
Consider the pseudo code provided below:

Given the following tests, what additional test(s) (if any) would be needed in order to achieve 100% statement coverage, with the minimum number of tests?
Test 1: A = 7, B = 7, Expected output: 7
Test 2: A = 7, B = 5, Expected output: 5

A. No additional test cases are needed to achieve 100% statement coverage.
B. A=6, B=12, Expected output: Bingo!
C. A=7, B=9, Expected output: 7
D. A=6, B=12, Expected output: Bingo! and A=7, B=9, Expected output: 7

Answer: A

Explanation:
100% statement coverage means that every line of code is executed at least once during testing. Based on the provided pseudo-code and the test cases given:
Test 1 executes the MIN = B statement when A and B are equal.
Test 2 executes the MIN = A statement and skips the inner IF since B is not equal to 2*A.
All statements within the code have been executed by these two tests, hence no additional test cases are needed to achieve 100% statement coverage.

NEW QUESTION # 158
In what circumstances should you use a simulator instead of an emulator when testing a mobile application?

A. When a model of the runtime environment Is sufficient for testing
B. When the hardware device and the runtime environment must be modeled
C. When security is not a consideration
D. When there is a need to assess the usability of the application

Answer: A

Explanation:
Simulators and emulators are tools used for testing mobile applications under different conditions. A simulator mimics the software environment but does not emulate hardware. Thus, it is suitable when the test objectives are focused on the application's internal behavior within the context of the software environment, not requiring an exact replica of the hardware conditions. This makes simulators particularly useful for scenarios where the primary concern is how the application runs in the software environment, rather than how it interacts with the underlying hardware.

NEW QUESTION # 159
......

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