Cisco Certified Network Professional 2026 – 400 Free Practice Questions to Pass the Exam

The command "vtp domain domain-name" is the correct syntax for configuring the VLAN Trunking Protocol (VTP) domain on a Cisco switch. This command allows you to specify the name of the VTP domain under which the switch will operate. By using this command, you effectively set the switch to communicate with other switches within the same VTP domain, enabling them to share VLAN information and configurations.

When you enter this command in the global configuration mode of the switch, it establishes the operational boundary for VTP updates. Proper configuration of the VTP domain name is vital for ensuring that VLAN information is synchronized across all switches that are part of the same domain. Without the correct domain name, switches will not exchange VTP advertisements, leading to inconsistencies in VLAN configurations.

The other commands provided do not follow the correct syntax recognized by Cisco's IOS for VTP configuration. They either mix the elements incorrectly or do not exist as valid commands, making them unusable for setting the VTP domain effectively. Understanding the proper command syntax is crucial for network professionals ensuring accurate switch configurations.