WAN Technologies Create a short essay (1 to 2 pages) that compares the two most common switching technologies: circuit switching and packet switching. You will need to do some extended research in circuit switching and packet switching to complete this activity. Include a discussion of Frame Relay for circuit switching and routers (using IP) for packet switching, and discuss the layer(s) of the OSI model where Frame Relay and IP are found. Describe the similarities and the differences between the two types of switching. Include your references at the end of your essay.