IP subnet zero

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is it applied to the ccna exam ? - or is applied or not on an individual basis per question in the exam ? I'm just wondering

 

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The real-world answer: ip subnet-zero is enabled by default on IOS nowadays. So all subnets are available.

The exam answer: I've not yet seen a Cisco exam question where the n and n-2 subnet answers are both available and where they do not explicitly state whether ip subnet-zero is on/off. In other words, they don't go out of their way to trick you on it. It should be clear which answer they're going for.

 

thanks dude