The word DoS refers to the Disk Operating System. In the case given above, if it happens that there is a distributed DoS attack, the attacker then sends messages directly to the BOTS. Bots refer to internet or web robots. Hope this answer helps. The answer is the first option.
Wilkes photography style is solely focused on time lapse. His pictures from morning to night show the cycle of a day at a place in one image.
We cannot help you with the second problem , as we do not know what you learned in Unit 10.
