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

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Computer Networking
Communication network is

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

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