Answer: (D)DoS attack.
Explanation:
Denial of Service attack occurs when an hacker prevents the real users from accessing the service by sending excessive message to the server asking it to authenticate requests with invalid return address.
Answer:
I don't remember much on this stuff but I think it was B
The responsibility for failures was deflected away from the automated parts of the system (and the humans, such as engineers, whose control is mediated through this automation) and placed on the immediate human operators, who possessed only limited knowledge and control.
The answe is 'B', as it should contain all the required information on how to operate the device, as well as a troubleshooting guide.