7 million
Bridge operate on data link layer
2
US pennies (since 1982) have been made of zinc (97.5%) with a thin layer of copper (2.5%) outside.
Ozone layer break because of CFC's. they react with ozone and break it.
A network bridge connects multiple network segments at the data link layer (Layer 2) of the OSI model.
Layer 2 (Data Link Layer) http://compnetworking.about.com/cs/internetworking/g/bldef_bridge.htm
Baking soda reacts with the copper surface of the pennies, causing them to form a blue/greenish copper oxide layer. This chemical reaction changes the surface of the pennies, giving them a blue appearance.
No. Hub works only on first layer. On second layer only swithc/bridge works on second layer of OSI model.
bridge is designed for use between LANs that use identical protocols for the physcial and link layer.
Post 1982 pennies in the United States are made of 97.5% zinc and coated with a thin layer of copper. Prior to 1982, pennies were made of 95% copper.
You will need a router. Token Ring and Ethernet refer to two different layer two protocols. You will need a layer three device to encapsulate the data for communication between the two networks. A bridge refers to a layer two device.
no there's none but u can predict it by looking at its color.