1 Cook pasta according to package directions. 2  Melt butter in a large skillet. 3  Gradually whisk in cream, Parmesan cheese and black pepper until smooth but not boiling. 4  Mix corn starch and water together; gradually whisk into alfredo sauce. 5  Bring to a boil over medium-low heat, stirring constantly; boil 1 minute.
Switches allow different nodes (a network connection point, typically a computer) of a network to communicate directly with one another in a smooth and efficient manner. Â­There are many different types of switches and networks.
In the Open Systems Interconnection (OSI) communications model, a switch performs the Layer 2 or Data-link layer function. That is, it simply looks at each packet or data unit and determines from a physical address (the MAC address) which device a data unit is intended for and switches it out toward that device.n a wide area packet-switched network such as the Internet, a switch determines from the IP address in each packet which output port to use for the next part of its trip to the intended destination.