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

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

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Computer Networking
Demodulation is the process of

dividing the high-speed signals into frequency bands
combining many low speed channels into one high speed channel
converting analog signals to digital signals
converting digital signals to analog signals
None of these

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