Q10. Which of the following release of Catalyst switches is compatible with PVST+ implementation of Spanning-Tree protocol?
A. Catalyst 2.0 release or above
B. Catalyst 3.0 release or above
C. Catalyst 4.0 release or above
D. Catalyst 4.1 release or above
Correct Answer: D
PVST+ is available with Catalyst 4.1 release or above. Switches before release 4.1 are compatible with PVST implementation of Spanning-Tree. Note that PVST+ is backward compatible. PVST+ is also compatible with 802.1Q implementation of CST (Common Spanning Tree) protocol. PVST+ is in fact requires no configuration to make it compatible with PVST (Plug and play compatible).
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