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Q: •What are the three functions of a layer 2 switch? •In an organization, which function do you see as most critical, and why?
A: There are three distinct functions of layer 2 switching 1)address learning 2)forward/filter decisions 3)loop avoidance Address learning Layer 2 switches and bridges remember the source hardware address of each frame received on an interface, [ and they enter this information into a MAC database called a forward/filter table. Forward/filter decisions When a frame is received on an
interface, the switch looks at the destination hardware address and finds the exit interface in the MAC database. The frame is only forwarded out the specified destination port. Loop avoidance If multiple connections between switches are created for redundancy purposes, network loops can occur. Spanning Tree Protocol (STP) is used to stop network loops while still permitting redundancy. ]
Expert answered|agay18|Points 230|
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Asked 7/18/2013 5:13:01 PM
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