Computer Networking
Which of the following network types have a designated router and a backup designated router assigned? 1. Broadcast 2. Point-to-point 3. NBMA 4. NBMA point-to-point

1 and 3
3 and 4
All of these
1, 2 and 3

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

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