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Which protocol provides a method of sharing VLAN configuration information between two Cisco switches?

Which protocol provides a method of sharing VLAN configuration information between two Cisco switches?
A .  STP
B .  VTP
C .  802.1Q
D .  RSTP

Answer: B

Explanation:Understanding VLAN Trunk Protocol (VTP)

http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.shtml

Introduction VLAN Trunk Protocol (VTP) reduces administration in a switched network. When you configure a new VLAN on one VTP server, the VLAN is distributed through all switches in the domain. This reduces the need to configure the same VLAN everywhere. VTP is a Cisco-proprietary protocol that is available on most of the Cisco Catalyst series products.

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