Two catalyst switches on a LAN are connected to each other with redundant links and have Spanning Tree
Protocol (STP) disabled.
What problem could occur from this configuration?

A.
It may cause broadcast storms.

B.
All ports on both switches may change to a forwarding state.

C.
It may cause a collision storm.

D.
These switches will not forward VTP information.

Explanation:
The configuration in the scenario may cause broadcast storms. When there are redundant links between two
switches, it is recommended that you enable Spanning Tree Protocol to avoid switching loops or broadcast
storms. Loops occur when there is more than one path between two switches. STP allows only one active path
at a time, thus preventing loops. A broadcast storm occurs when the network is plagued with constant
broadcasts. When the switches have redundant links, the resulting loops would generate more broadcasts,
eventually resulting in a complete blockage of available bandwidth that could bring the complete network down.
This situation is referred to as a broadcast storm.
The option stating that all ports on both switches may change to a forwarding state is incorrect. Forwarding is a
port state that is available when using STP. When STP is disabled, the switch cannot change the STP states of
its ports.
The option stating that the switches will not forward VLAN Trunking Protocol (VTP) information is incorrect.
Enabling or disabling STP does not have a direct effect on VTP messages.
The term collision storm is not a valid term.
Objective:
LAN Switching Fundamentals
Sub-Objective:
Configure, verify, and troubleshoot interswitch connectivity

Cisco > Support > Technology Support > LAN Switching > Ethernet > Design > Troubleshooting LAN Switching
Environments > Document ID: 12006 > Spanning Tree Protocol