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Free CTFL-PT_D Exam Braindumps (page: 4)

Page 3 of 11
PDF with 40 Questions

Identify the correspondences between architectures (from 1 to 4) and their characteristic risks (from A to D).
1. Dynamlc/cloud-based systems.
2. Client-server systems.
3. Multi-Tier systems.
4. Distributed systems.
1. Potential problems due to firewalls, packet inspection and server load balancing.
2. 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.
3. Failures related to the correct configuration of features such as distribution, virtualization and scaling, during the Initial configuration or subsequent updates.
4. Inadequate bandwidth or capacity on any individual server.
SELECT ONE OPTION

  1. 1D-2A-3C-4B
  2. 1C - 2B - 3D - 4A.
  3. 1A-2C-3D-4B.
  4. 1C-2A-3D-4B.

Answer(s): D

Explanation:

The characteristic risks associated with different architectures are as follows:
1. 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)
2. Client-server systems: Potential problems due to firewalls, packet inspection, and server load balancing. (A)
3. 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)
4. Distributed systems: Inadequate bandwidth or capacity on any individual server. (B)


Reference:

- ISTQB Performance Testing Syllabus
- ISTQB Glossary



Select the architecture that, in addition to the virtualized systems, could present performance risks associated with virtualization.
SELECT ONE OPTION

  1. Dynamic/cloud-based systems.
  2. Multi Tier systems.
  3. Client-server systems.
  4. Distributed systems.

Answer(s): A

Explanation:

Dynamic and cloud-based systems introduce performance risks associated with virtualization due to the inherent nature of resource allocation and scalability in these environments. Virtualized systems often share physical resources, leading to potential contention and unpredictable performance impacts. These risks are more pronounced in dynamic/cloud-based architectures where resources are frequently allocated and deallocated based on demand, potentially causing latency, resource bottlenecks, and performance variability. ISTQB guidelines on performance testing emphasize understanding these risks to ensure reliable performance outcomes.



Which elements are the MOST important parts of a performance testing environment?
1. Test scripts.
2. Software configuration.
3. Test data.
4. The type of environment (physical, cloud-based, virtualized).
5. Hardware configuration.
SELECT ONE OPTION

  1. III, V are the most important parts of the test environment.
  2. II. IV are the most important parts of the test environment.
  3. II. III. V are the most important parts of the test environment.
  4. II, V are the most important parts of the test environment.

Answer(s): C

Explanation:

- II. Software configuration: Ensures the software under test is set up correctly, mirroring the production environment as closely as possible.
- III. Test data: Provides the necessary inputs to simulate real-world scenarios and workloads.
- V. Hardware configuration: Ensures the physical resources are adequately represented to gauge performance metrics accurately.
These elements are crucial for creating a realistic and effective performance testing environment. According to ISTQB standards, these components ensure that the testing environment accurately reflects production conditions, which is critical for obtaining valid and reliable performance test results.



Choose the option that BEST describes valid opportunities for the dynamic performance testing.
SELECT ONE OPTION

  1. During component Integration testing, across any kind of use cases and workflows, especially when integrating different use case features or Integrating with the "backbone" structure of a workflow.
  2. During system testing of overall end-to-end behaviors under various load conditions.
  3. During acceptance testing, especially for data flows and workflows across key inter-system interfaces. In system integration testing, it is not uncommon for the "user* to be another system or machine (e.g. inputs from sensor inputs and other systems).
  4. During unit testing, including using or not profiling information to determine potential bottlenecks and white box techniques to evaluate resource utilization.

Answer(s): B

Explanation:

System testing of overall end-to-end behaviors under various load conditions provides a comprehensive view of how the system performs in real-world scenarios. This type of testing captures interactions between components, identifies potential bottlenecks, and ensures that the system meets performance requirements under expected load conditions. ISTQB performance testing principles highlight the importance of end-to-end testing to validate that the system can handle the intended workloads effectively.






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