ICND1 VLAN Management 4

Question 1

A switch has VTP revision number 100. A new switch with revision number 150 is connected. What is the likely outcome?

Accepted Answer

The new switch overwrites the domain's VLAN database with its higher revision

Answer

VTP always synchronizes to the highest revision number, so the new switch's database overwrites the domain's existing VLAN configuration—a common accidental outage scenario.

Question 2

Which command changes the native VLAN of a trunk to VLAN 99?

Accepted Answer

switchport trunk native vlan 99

Answer

'switchport trunk native vlan 99' sets the native VLAN for untagged traffic on an 802.1Q trunk to VLAN 99.

Question 3

What is a voice VLAN on a Cisco switch access port?

Accepted Answer

A second VLAN on an access port that tags voice traffic for IP phones

Answer

A voice VLAN enables an access port to carry two VLANs: one untagged for the PC and one tagged (voice VLAN) for the IP phone connected to the same port.

Question 4

An administrator wants to see which VLANs are currently active and forwarding on trunk interface Gi0/1. Which command helps?

Accepted Answer

show interfaces gi0/1 trunk

Answer

'show interfaces gi0/1 trunk' displays the VLANs allowed, active, and forwarding on that specific trunk port.

Question 5

Inter-VLAN routing using a 'router-on-a-stick' configuration requires which interface type on the router?

Accepted Answer

Subinterfaces with 802.1Q encapsulation

Answer

Router-on-a-stick uses a single physical interface divided into logical subinterfaces, each configured with 'encapsulation dot1q <vlan-id>' to route between VLANs.

(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test

(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test

ICND1 VLAN Management 4