Computer Networking
Intranets and extranets can use their network fire walls and other security features to establish secure Internet links within an enterprise or with its trading partners. Select the best fit for answer:

OSI
Virtual Private Network
Network operating system
Network Server

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

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

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