Fifty stations on a pure ALOHA network share a 1-Mbps (106 bit per second) channel. If frames are 1000 bits long, find the system throughput (in unit: frames/second) if each station is sending 10 frames per second. Repeat this question for slotted ALOHA

According to the video what are some tasks petroleum engineers perform check all that apply

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.

Description: write function lastfirst() that takes one argument—a list of strings of the format "lastname, firstname" —and returns a list consisting of two lists: (a) a list of all the last names (b) a list of all the first names