Raoul has received a file attachment from a known individual. He has no reason to expect files from this individual. Which of the following is an effective security strategy for Raoul to take? 

You are using an e-mail client that you are unfamiliar with. You need to send an e-mail with an attachment but you do not see a feature labeled “attachment” anywhere on the client. What icon should you look for that is commonly used to invoke the e-mail attachment option?

As a project manager, you have to balance three elements that compose the project triangle. Suppose your customer requests that you add some new requirements to the project when you are halfway through. If you agree to this request, how would it affect other aspects of the project?

Aisha is preparing to give a presentation to management about the development of cloud computing services that her company is planning to implement. Which of the following might her managers mention as a possible objection or drawback to using cloud services for the company? 

Evonka is listening to music from an online music provider (such as Pandora or Jango). She builds a list of music preferences, including favorite songs. The music service then suggests additional songs she might enjoy. The music provider is an example of a cloud-computing application that uses a technology for collaborative filtering, which helps define the list of songs available to listeners. Which term describes this technology?