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.
Network switches store a list of MAC addresses seen at every port and only forward packets to the ports that need to see the packet. Wireless access points often use MAC addresses for access control. They only allow access for known devices (MAC address is unique and identifies devices) with the correct passphrase.