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So, the first requirement clearly refers to some specific functionality of

2
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the Bowling Alley system, because it talks about what the system has

3
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to do from a functional standpoint. So, it's definitely not a non-functional

4
00:00:10,420 --> 00:00:13,400
requirement. On the other hand, the fact that the Word Count system

5
00:00:13,400 --> 00:00:16,320
should be able to process large files, is telling us something not

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about the functionality of the system, but rather about its qualities. The

7
00:00:19,580 --> 00:00:21,600
fact that it has to be scalable, that it has to be

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efficient and so we can consider this to be a non-functional requirement.

9
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Similarly, the fact that the Login program for a

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website should be secure is definitely telling us something

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about the quality of the system that has little

12
00:00:31,800 --> 00:00:34,026
to do with its functionality. And so this is

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also a non-functional requirement. Finally, the fact that the

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00:00:36,680 --> 00:00:38,980
Vending Machine program should take coins as an input

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from the user is telling us something about the

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functionality of the program and therefore, is a functional requirement.