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ISTQB Exam CTAL-TTA Topic 5 Question 22 Discussion

Actual exam question for ISTQB's CTAL-TTA exam
Question #: 22
Topic #: 5
[All CTAL-TTA Questions]

You are working on a complex systems integration project that will soon be deployed to the production environment. This system is replacing a system that was popular with the users and had no outstanding non-functional issues. There are multiple components that interact and these have been developed by various development and testing groups including some outsourced groups. You will be leading the performance testing effort. Although you would prefer to have a dedicated test system for this effort, you will have to use the production system. You can do this testing at a low usage time, but there will be some users on the system and you will be using real data for the tests. You are now planning your performance testing. Unfortunately, there are no requirements for the performance requirements of the system. How do you determine the acceptable performance levels for the various operational profiles?

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Suggested Answer: A

Given the absence of defined performance requirements for the new system, a practical approach is to use the performance metrics of the legacy system as a benchmark. This method is beneficial as it provides a clear, historical baseline of what users are accustomed to and accept as satisfactory performance. Benchmarking against the legacy system ensures the new system meets or exceeds the performance levels that users already find acceptable, which can facilitate smoother acceptance and transition to the new system.


Contribute your Thoughts:

Selene
2 months ago
Hmm, I don't know, maybe we could just ask the magic 8-ball to determine the performance requirements? That seems as reliable as some of these other options.
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Ming
1 months ago
C) You should go back to the business analysts and require them to update the requirements to include the performance expectations
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Lashaunda
1 months ago
Hmm, that could be a good starting point to determine the acceptable performance levels.
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Mike
1 months ago
A) You should check the performance of the legacy system and use that as a benchmark for the new system
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Freeman
3 months ago
Option A is a good starting point, but the legacy system may have had its own performance issues that we don't want to carry forward. I'm with the majority on C and D as the best approach.
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Stevie
3 months ago
While B sounds tempting, users may not always have a realistic understanding of what's achievable. I'd lean towards a combination of C and D to get a solid, data-driven set of requirements.
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Eva
2 months ago
D) You should use industry standard performance benchmarks
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Leana
2 months ago
C) You should go back to the business analysts and require them to update the requirements to include the performance expectations
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Marguerita
2 months ago
A) You should check the performance of the legacy system and use that as a benchmark for the new system
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Shantay
3 months ago
I think option C is the way to go. The business analysts should be responsible for defining the performance requirements upfront, not leaving it to the testing team to figure out.
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Viola
2 months ago
That's a good point, using the legacy system's performance as a benchmark could also be helpful.
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Erasmo
2 months ago
In that case, we could use industry standard benchmarks as a reference for acceptable performance levels.
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Ngoc
2 months ago
But what if they don't have the expertise to define those requirements?
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Elina
2 months ago
I agree, the business analysts should definitely update the requirements to include performance expectations.
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Olene
3 months ago
But shouldn't we also consider industry standard performance benchmarks to get a broader perspective?
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Breana
3 months ago
I agree with Reena. It's a good starting point to determine acceptable performance levels.
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Reena
3 months ago
I think we should check the performance of the legacy system as a benchmark.
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