Okay, I think I've got this. The router configuration is using IPv4 multicast, so the correct answer must be A. 224.0.0.0/8, which is the standard multicast address range. I'm feeling confident about this one.
Okay, let me think this through. Working closely with developers doesn't seem like a common cause of stress in a service desk environment. I'm going to go with option B - staff have left and been replaced. That makes the most sense to me based on my understanding of the service desk role.
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