What Is a Denial of Service Attack

question 54

Multiple Choice

What is a denial of service attack?

• A) A denial of service attack occurs when the perpetrator sends hundreds of messages from randomly generated false addresses, overloading an Internet service provider's e-mail server.
• B) A denial of service attack occurs when an e-mail message is sent through a re-mailer, who removes the message headers making the message anonymous, then resends the message to selected addresses.
• C) A denial of service attack occurs when a cracker enters a system through an idle modem, captures the PC attached to the modem, and then gains access to the network to which it is connected.
• D) A denial of service attack occurs when the perpetrator e-mails the same message to everyone on one or more Usenet newsgroups LISTSERV lists.

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Definitions:

Activity Variances

The differences between the expected costs of activities and the actual costs, used in managerial accounting to analyze performance.

Meals Served

The total number of meals prepared and provided to customers over a given period, often used in the hospitality or restaurant industry as a performance metric.

Cost Drivers

Factors that cause a change in the cost of an activity, such as machine-hours or labor hours, influencing direct and indirect costs.

Guests

Individuals invited to partake or be present in an event, establishment, or locale.