You are logged in as a user with limited system privileges, you are the linux system administrator and you have the password to the root user account. when you need to switch to root user to perform administrative tasks, what command would you enter at the command prompt?

Exchanging which type of data uses the least bandwidth? music photographs video voice bandwidth- the amount of data that can be moved between two points in a set time period

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.

Hazel has just finished adding pictures to her holiday newsletter. she decides to crop an image. what is cropping an image?