What network information do attackers initially try to find?

Let r be a robotic arm with a fixed base and seven links. the last joint of r is a prismatic joint, the other ones are revolute joints. give a set of parameters that determines a placement of r. what is the dimension of the configuration space resulting from your choice of parameters?

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The managing director of a company sends a christmas greeting to all his employees through the company email. which type of network does he use? he uses an .