The answer is flash mob. They called it flash mob when a large number of people in twitter gather in group for a centralized face to face meeting. In flash mob, people are gathering to be able to create a community that is helping each other or even just talking to each other.
Answer:
Im sure its called Single User OS
Answer:
all the points are correct apart from the first one..
Physical view of data deals with how the data is located and formatted.