Networking Concepts Flashcards

Front

What is a VLAN?

Back

Logical segmentation inside a switch. Devices in different VLANs behave like they’re on different physical switches.

Front

How to configure a VLAN?

Back

vlan 10 name SALES interface f0/1 switchport mode access switchport access vlan 10

Front

Why use a VLAN?

Back

To isolate traffic, reduce broadcasts, and control access between departments.

Front

What is a Trunk?

Back

A link that carries traffic from multiple VLANs using 802.1Q tagging.

Front

How to configure a Trunk?

Back

interface g0/1 switchport mode trunk switchport trunk allowed vlan 10,20

Front

Why use a Trunk?

Back

To extend multiple VLANs across switches or to a router.

Front

What is an Access Port?

Back

A switch port assigned to exactly one VLAN. No tagging.

Front

How to configure an Access Port?

Back

interface f0/2 switchport mode access switchport access vlan 10

Front

Why use an Access Port?

Back

End devices don’t understand VLAN tags.

Front

What is an Interface?

Back

A physical or logical connection point on a device.