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At what level of the Open Systems Interconnection (OSI) do a switch and a bridge operate?

At what level of the Open Systems Interconnection (OSI) do a switch and a bridge operate?

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Both operate at layer two. Switches, of course, can segment a network into different parts. Bridges combine different networks together. Routers operate at layer three.

You'll find in-depth information about switches on this SearchNetworking page:
http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213079,00.html

You can also go to this page on SearchSecurity for information on bridges:
http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci211705,00.html

For everything you ever wanted to know about OSI, go to SearchNetworking:
http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci212725,00.html

This was first published in March 2002

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