Cisco Certified Network Associate (CCNA) Practice Exam

Disable ads (and more) with a membership for a one time $4.99 payment

Prepare for the Cisco Certified Network Associate (CCNA) Practice Exam. Test your knowledge with our interactive quizzes featuring multiple choice questions, hints, and explanations. Equip yourself for success!

Practice this question and more.


Which command would you use to determine from which switch a VLAN was learned?

  1. #show vtp status

  2. #show interface status

  3. #show vlan brief

  4. #show cdp neighbors

The correct answer is: #show vtp status

To determine from which switch a VLAN was learned, the command that provides relevant information is the one related to VLAN Trunking Protocol (VTP). VTP is used in a network to manage VLAN configuration across multiple switches, allowing VLANs to be created and modified from a central switch. The command that reveals the VTP status will show which VLANs are defined in the VTP domain and their propagation among the switches. When using the command related to VTP status, it will provide insights into the switches in the VTP domain, including the VLANs that this switch has learned from other switches. This is crucial for understanding how VLANs are shared and managed across a network. The other commands mentioned serve different purposes. Commands that display interface statuses provide information about the operational condition of specific interfaces on the switch, but they do not show VLAN information. Showing VLAN details without context about their source doesn’t indicate where they were learned from. Lastly, a command that displays CDP (Cisco Discovery Protocol) neighbors gives insight into directly connected devices but does not directly inform about VLAN origins in the context of VTP.