#45. Which technology manages multicast traffic at Layer 2 by configuring Layer 2 interfaces dynamically to forward multicast traffic only to those interfaces that want to receive it?
#46. Some Cisco Supervisor Engines have modular Uplink ports so that a module can be selected to provide an appropriate level of bandwidth. Which two features are valid on a 2-port 1000Base-SX or 1000Base-LX modular Uplink module? (Choose two)
#48. Some Cisco Supervisor Engines have modular unlink ports so that a module can be selected to provide an appropriate level of bandwidth. Which two features are valid on a 2-port 1000Base SX or 1000Base LX modular uplink? (Choose two.)
#49. Bridging LANs helps to reduce traffic in a CSMA/CD environment by reducing the size of the collision domain. However , it fails to address which problem?
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