What happens when you call someone whose phone is off?

Which of these is most responsible for differences between the twentieth century to the twenty-first century?

Which option correctly describes a dbms application? a. software used to manage databases b. software used to organize files and folders c. software used to develop specialized images d. software used to create effective presentations

Adrian has decided to subscribe for a new internet connection. he wants a high speed connection so that he can stream video content smoothly. which access technology would you advise adrian against using?