The answer to this question is A
Usually that means a physical connection - so either a loose or faulty ethernet cord.
Mobile device management is a type of security software used by an IT department to monitor, manage, and secure employees' mobile devices (laptops, smartphones, tablets, etc.) that are deployed across multiple mobile service providers and across multiple mobile operating systems being used in the organization.
A float data type can hold a decimal number.
An online travel agency such as Travelocity is an example of a intermediary.