Cisco Certified Network Associate (CCNA) Practice Exam

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Study for the Cisco Certified Network Associate (CCNA) exam with our comprehensive quiz featuring multiple-choice questions and detailed explanations. Prepare effectively and enhance your understanding of networking concepts!

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Which VTP advertisement type is triggered by modifications to the VTP or VLAN database?

Configuration advertisement
Summary advertisement
Subset advertisement
Domain advertisement

The correct answer is: Subset advertisement

The correct choice is the subset advertisement. This type of advertisement is specifically triggered whenever changes are made to the VLAN configuration or the VLAN database, such as adding, deleting, or modifying VLANs. When such changes occur, a subset advertisement is generated to inform other switches within the same VTP domain about the updated VLAN information, ensuring that all devices are synchronized with the new VLAN configuration. Configuration advertisements convey information regarding the management domain and are utilized for updates to the VTP configuration rather than specific VLANs. Summary advertisements, on the other hand, provide an overview of the entire VLAN situation within the domain but are not specifically tied to individual modifications. Domain advertisements indicate the presence of a VTP domain but do not communicate specific changes to VLANs. Therefore, subset advertisements are the key mechanism by which changes to the VLAN database are communicated to other switches.