Draw and submit one or more UML sequence diagrams for the following elevator user story:

As a user of an elevator building, I need to be able

to call an elevator to my floor and ride the elevator to another floor.
know that my elevator request is being serviced (and that the elevator is not out-of-order).
stop the elevator doors from closing on me as I enter or exit the car.
know that I have arrived at the correct destination floor.
signal for help in an emergency within the car

How are stop motion special effects in animated films created

1. which of the following statements are true about routers and routing on the internet. choose two answers. a. protocols ensure that a single path between two computers is established before sending packets over it. b. routers are hierarchical and the "root" router is responsible for communicating to sub-routers the best paths for them to route internet traffic. c. a packet traveling between two computers on the internet may be rerouted many times along the way or even lost or "dropped". d. routers act independently and route packets as they see fit.

Python. primary u.s. interstate highways are numbered 1-99. odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west. auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. thus, the 405 services the 5, and the 290 services the 90. given a highway number, indicate whether it is a primary or auxiliary highway. if auxiliary, indicate what primary highway it serves. also indicate if the (primary) highway runs north/south or east/west.