VLAN

Question 1

Broadcast domain

Answer 1

Group of devices that will receive a broadcast message from its members (ends at the router interface and surrounds devices connected to that interface)

Question 2

How do you create VLANs?

Answer 2

Created on a switch based on per interface

Question 3

Access port

Answer 3

a switchport that belongs only to a single VLAN and connects to hosts

Question 4

Trunk ports

Answer 4

switchports that are able to carry traffic from multiple vlans on a single interface

Question 5

How do trunk ports work?

Answer 5

the switch tags frames coming out from the interface with trunking protocols like 802.1q with what VLAN they belong to

Question 6

What are the two main fields in 802.1q?

Answer 6

1. Tag protocol Identifier
2. Tag Control Information

Question 7

What is TCI and what makes up it?

Answer 7

Tag Control Information
1. Priority Code Point - prioritizing traffic
2. Drop Eligible Indicator - can be dropped in congestion
3. Vlan ID

Question 8

What VLAN numbers can a standard VLAN use?

Answer 8

1-1005

Question 9

What VLAN numbers can a extended VLAN use?

Answer 9

1006-4094

Question 10

What happens if traffic is sent to a native VLAN?

Answer 10

the traffic is sent out the interface untagged and will forward untagged frames to the native vlan

Question 11

How do you manually set the trunking protocol?

Answer 11

switchport trunk encapsulation dot1q

Question 12

What is a router on a stick?

Answer 12

A single router than handles multiple vlans through a single physical interface by creating “sub interfaces” ie int g0/0.10

Question 13

How do you enable routing on a multilayer switch?

Answer 13

1. ip routing
2. no switchport (on port you want to use for routing)