Which two statements about VLAN Trunking Protocol are true?(Choose two.)
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A. B. C. D. E.AB.
VTP is a Layer 2 messaging protocol that maintains VLAN configuration consistency by managing the addition, deletion, and renaming of VLANs within a VTP domain.
A VTP domain (also called a VLAN management domain) is made up of one or more network devices that share the same VTP domain name and that are interconnected with trunks.
VTP minimizes misconfigurations and configuration inconsistencies that can result in a number of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations.
Before you create VLANs, you must decide whether to use VTP in your network.
With VTP, you can make configuration changes centrally on one or more network devices and have those changes automatically communicated to all the other network devices in the network.
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vtp.htmlVLAN Trunking Protocol (VTP) is a protocol used in Cisco networks to propagate VLAN configuration information between switches. The protocol is used to maintain VLAN consistency by managing the addition, deletion, and renaming of VLANs within a VTP domain.
The correct statements about VTP are:
A. VLAN Trunking Protocol is a Layer 2 messaging protocol that maintains VLAN consistency by managing the addition, deletion, and renaming of VLANs within a VLAN Trunking Protocol domain. This statement is true. VTP is a Layer 2 messaging protocol that propagates VLAN information between switches within a VTP domain, ensuring that all switches in the domain have consistent VLAN configurations. VTP allows administrators to create, delete, and modify VLANs on one switch and have those changes automatically propagated to all switches in the domain.
B. Layer 2 trunk interfaces, Layer 2 port channels. and virtual port channels support VLAN Trunking Protocol functionality. This statement is also true. VTP is supported on Layer 2 trunk interfaces, Layer 2 port channels, and virtual port channels. VTP packets are sent and received over Layer 2 trunk interfaces, and VTP updates are propagated over Layer 2 port channels and virtual port channels.
C. VLAN Trunking Protocol is only supported on Layer 2 trunk interfaces. This statement is false. VTP is not only supported on Layer 2 trunk interfaces, but also on Layer 2 port channels and virtual port channels.
D. On Cisco Nexus switches, VLAN Trunking Protocol is enabled by default. This statement is false. On Cisco Nexus switches, VTP is not enabled by default. It must be manually enabled on each switch.
E. VLAN Trunking is a Layer 2 messaging protocol that maintains the interface VLAN configuring within a VLAN Trunking Protocol domain. This statement is incorrect. While VTP does maintain VLAN configuration within a VTP domain, it is not a protocol specifically for maintaining interface VLAN configuration. Rather, it is a protocol for propagating VLAN information between switches.
In summary, VTP is a Layer 2 messaging protocol used to maintain VLAN consistency by managing the addition, deletion, and renaming of VLANs within a VTP domain. It is supported on Layer 2 trunk interfaces, Layer 2 port channels, and virtual port channels, but it is not enabled by default on Cisco Nexus switches.