CTFL-PT_D Sample Questions Answers

Performance test scripts require meticulous verification and error handling to ensure they function as intended.

Statement III: Manual intervention may be required to carry out remedial action in the event of an error. This is true as certain errors might require human judgment to resolve.

Statement IV: Performance scripts should be subject to quality control and testing, just like any software product. This ensures the reliability and effectiveness of the performance test scripts.

Statements I, II, and V have inaccuracies:

Statement I: Verification using indirect methods can be necessary.

Statement II: While logical rules are important, they are not always mandatory.

Statement V: Default error handling may not be sufficient, and additional checks can be crucial.

References:

ISTQB Performance Testing Syllabus

ISTQB Advanced Test Automation Engineer Syllabus

To calculate the minimum front-end processing capacity, we need to account for the peak and off-peak transactions:

Peak Transactions:

Assume 12 peak periods per hour.

During peak times, the transaction rate is 100 transactions/minute.

Off-Peak Transactions:

There are 60 - 12 = 48 minutes of off-peak periods per hour.

Off-peak transaction rate is 10.42 transactions/minute.

Total Transactions Per Hour:

Peak transactions: 12 * 100 = 1,200 transactions.

Off-peak transactions: 48 * 10.42 = 500.16 transactions.

Total transactions per hour: 1,200 + 500.16 = 1,700.16 transactions/hour.

Thus, the correct answer isD. 100 * 12 + (60 - 12) * 10.42 = 1,700.16 transactions/hour.

The main activities of performance test execution include:

I. Monitoring all parts of the environment: Ensures that performance metrics are collected from various components to provide a comprehensive view of the system’s performance.

III. Collecting and keeping all results and information related to the test: Essential for analyzing the performance test outcomes and identifying areas for improvement.

IV. Generation of a load against the SUT according to a load profile: Simulates the expected user load to assess how the system performs under typical and peak conditions.

These activities align with ISTQB guidelines, which emphasize thorough monitoring, data collection, and load generation as critical components of effective performance testing.

Performance risks should be analyzed and evaluated continuously throughout the development lifecycle, especially in projects with high processing capacity and independent operation across multiple locations. This ongoing evaluation helps to identify and mitigate risks early and adapt to any changes that occur during development.

References:

ISTQB Performance Testing Syllabus

ISTQB Advanced Level Test Manager Syllabus

The characteristic risks associated with different architectures are as follows:

Dynamic/cloud-based systems: Critical workflows or dataflows to, from, or through unreliable or unpredictable remote servers, especially when such servers suffer periodic connection problems or intermittent periods of intense load. (C)

Client-server systems: Potential problems due to firewalls, packet inspection, and server load balancing. (A)

Multi-Tier systems: Failures related to the correct configuration of features such as distribution, virtualization, and scaling, during the initial configuration or subsequent updates. (D)

Distributed systems: Inadequate bandwidth or capacity on any individual server. (B)

References:

ISTQB Performance Testing Syllabus

ISTQB Glossary

RTE (Remote Terminal Emulation) protocol is used when testing the response time of an application connected through remote access. It simulates interactions with applications over a network as if they were being accessed locally, making it suitable for remote access scenarios.

References:

ISTQB Performance Testing Syllabus

ISTQB Glossary

Aggregating results from performance testing allows for the identification of performance trends, reporting of metrics in an understandable way, and providing stakeholders with insights into the speed of specific business processes. However, it does not necessarily provide an overall status of system performance. Instead, it focuses on detailed metrics and trends. ISTQB guidelines highlight the importance of presenting performance metrics clearly but recognize that aggregated data does not equate to a comprehensive status overview of the entire system's performance.

1A: Alerts and warnings are typically part of the operating environment to monitor and respond to issues in real-time.

2B: Concurrency of usage is critical in the business environment where multiple users interact with the system simultaneously.

3A: Operational processes are key aspects of the operating environment, ensuring the smooth running of day-to-day activities.

4C: Resource utilization is a technical concern, focusing on how effectively system resources are used.

5C: Response time is a technical metric that directly affects user experience and system efficiency.

6B: Throughput of data, transactions, and other units of work performed is relevant to the business environment where the volume of operations impacts overall performance.

This categorization aligns with the ISTQB framework for performance evaluation across different environments, ensuring comprehensive coverage of performance metrics.

In an Agile, iterative, and incremental development model:

III: The performance test may be conducted by a specific team. This is true as dedicated performance testing teams often handle complex performance testing tasks.

IV: A performance test cycle must be performed in each iteration by the development team (Agile). This ensures that performance testing is integrated into each iteration to catch performance issues early.

Statements I and II are not necessarily true:

I: While possible, it is not always the case that there will be a dedicated iteration for performance testing.

II: Performance testing in a cloud-based environment is beneficial but not mandatory.

References:

ISTQB Performance Testing Syllabus

ISTQB Agile Tester Extension Syllabus