When troubleshooting the issue, you notice the election of a new root bridge with an unknown
MAC address. Knowing that all access ports have the PortFast feature enabled, what would be the
easiest way to resolve the issue without losing redundant links?

You are the network administrator of a small Layer 2 network with 50 users. Lately, users have
been complaining that the network is very slow. While troubleshooting, you notice that the CAM
table of your switch is full, although it supports up to 12, 000 MAC addresses. How can you solve
this issue and prevent it from happening in the future?

In Layer 2 topologies, spanning-tree failures can cause loops in the network. These unblocked
loops can cause network failures because of excessive traffic. Which two Catalyst 6500 features
can be used to limit excessive traffic during spanning-tree loop conditions? (Choose two.)

Which two statements are true about 802.1s? (Choose two.)

Which configuration is used to enable root guard?

Which two statements describe spanning-tree BPDU processing for a blocking port? (Choose
two.)

When troubleshooting duplex mismatches, which two are errors that are typically seen on the half
duplex end? (Choose two.)

You are using VTP (version 2) in your network to transport VLAN information between switches.
When adding a switch to the network (that has been used in the lab previously), you notice that a
lot of the existing VLANs have been deleted or replaced with other names. What can you do to
prevent this from happening in the future, without losing all VTP features that you are using today?

Which two combinations are valid PAgP configurations that will set up a PAgP channel? (Choose
two.)

Spanning Tree Protocol IEEE 802.1 s defines the ability to deploy which of these?