A mobile device user has entered her user ID and password to…

A mobile device user has entered her user ID and password to access an online account. The user immediately receives a text message with a unique PIN that must be entered before she is granted access to the account.    Which of the following describes the security method being used?

Derek is planning a camping trip and wants to be able to lis…

Derek is planning a camping trip and wants to be able to listen to music at the campsite. Derek currently has a smartphone but does not like the sound coming from the speakers.   What will help Derek improve the sound coming from his smartphone’s speakers while he is at the campsite?

Derek is working at the help desk when he receives a call fr…

Derek is working at the help desk when he receives a call from a client about an issue with the company’s email. The customer is very upset about the email issue. He is complaining about the email service and the IT department in general.   What should Derek do to defuse the situation?

The back cover of a mobile device is warmer than usual, and…

The back cover of a mobile device is warmer than usual, and the battery seems to lose its charge much quicker than normal. The user has scanned for malware, closed unused apps, and decreased the brightness level of the screen, but the symptoms persist.   Which of the following is the most likely cause for this behavior?