Computer Networking
Carrier is

a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of these
a continuous frequency capable of being modulated or impressed with a second signal
One or more conductors that serve as a common connection for a related group of devices
the condition when two or more sections attempt to use the same channel at the same time

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Computer Networking
What is the purpose of Spanning Tree Protocol in a switched LAN?

To prevent switching loops in networks with redundant switched paths
To provide a mechanism for network monitoring in switched environments
To manage the VLAN database across multiple switches
To create collision domains
To prevent routing loops in networks with redundant paths

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