A bank system mainframe is struck by a DDoS attack and goes. Customer’s cannot log on to their accounts. Which element of C. I.A has been violated.

the answer is b. executive summary. a management summary, or executive summary, is a short article or section of a document, produced for business purposes, that condenses a longer report or proposal or a group of related reports in such a way that readers can rapidly become familiar with a large body of material without having to read it all.

the server would not be working.