Computer Networking
Which of the following uses ATM as the Data Link layer protocol that's terminated at what's known as the DSLAM?

Wireless
PPPoE
Dedicated T1
Frame Relay
DSL

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

To create collision domains
To prevent switching loops in networks with redundant switched paths
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

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