1.4 VLAN

Question 1

What is 802.1Q (VLAN)?

Answer 1

networking standard that supports Virtual LANs (VLANs) on an Ethernet network

The standard defines a system of VLAN tagging for Ethernet frames

VLAN in L2
Subnet in L3

Question 2

How is communicati on between VLANs typically handled?

a) Through direct physical connections between VLANs
b) By configuring separate physical interfaces on the router
c) By using a router with a single interface and subinterfaces
d) By configuring VLANs on the network switch

Answer 2

c) By using a router with a single interface and subinterfaces

Question 3

What are subinterfaces used for in networking?

a) To create separate physical connections between devices
b) To segment a network into different VLANs
c) To manage communication between VLANs on a router
d) To encrypt data transmitted over a network

Answer 3

c) To manage communication between VLANs on a router

Question 4

What Layer in OSI is Switched Virtual Inteface (SVI)?

Answer 4

Virtual Interface in L3, created when you create a VLAN

Question 5

What is VLAN?

Answer 5

Separates network at L2

Question 7

What is Inter-VLAN Routing?

Answer 7

Allows to communicate VLANS
e.g. a computer in VLAN 20 wants to connect another computer at VLAN 30. Inter-VLAN allows that communication to happen.

Question 8

How does Inter VLAN work in L2 an L3?

Answer 8

L2 RoaS (Router on a stick)
L3 (subinterface)

Question 9

What is Voice VLANS and why?

Answer 9

Dedicated VLAN for Voice, as simple as that.

Voice VLAN for voice (priority)
DATA VLAN (for PC etc.)