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BASIC NET - 5
VLAN (Virtual Local AreaNetwork)
| Question | Answer |
|---|---|
| is a logical subnetwork that groups a collection of devices from different physical LANs. | virtual local area network |
| all devices are connected to a single switch or hub in the same broadcast area and communicate with each other without any intermediaries. | flat network |
| get the same result as Flat Network, at almost half the cost and also acquire the flexibility and expandability for the future growth of the network, which was very limited in Flat Network | VLANs |
| - is a VLAN that all switch ports belong to when they are not assigned to another VLAN - usually VLAN 1, but it can be changed to any other number - can prevent unauthorized access and broadcast storms | default VLAN |
| - is a VLAN whose traffic traverses a trunk port without a VLAN tag - It is used to support legacy devices or devices that don’t tag their traffic | native VLAN |
| expands VLAN space by adding an additional 802.1Q tag to 802.1Q-tagged packets. | VLAN stacking or double VLAN {IEEE 802.1Q-in-802.1Q} |
| is widely used on carriers' backbone networks. | QinQ |
| We cannot change the _______________, and we cannot even delete the ________________ It is in the default settings which is the VLAN 1. | Default VLAN: VLAN 1 |
| is one concept defined in IEEE 802.1Q standard protocol that was created for backward compatibility with old devices that don’t support VLANs. | Native VLAN |
| all devices on the link must still be capable of communication even if they do not speak the IEEE 802.1Q standard protocol. | Ethernet network |
| is used by the switch to carry specific control and management protocol traffic like CISCO Discovery Protocol (CDP). | Native VLAN |
| does not need any VLAN tag to cross over the trunk. | VLAN Trunking Protocol (VTP) Spanning Tree Protocol (STP |
| - Uses a router as a mediator for data transfer from 1 VLAN to another VLAN. - physical interfaces on a router are limited and expensive. | Inter-VLAN |
| witching and routing are achieved inside one box. | Multilayer Switch Inter-VLAN or Layer-3 switch, |
| It supports Switch Virtual Interfaces or SVIs that act as gateways and perform routing. One SVI can be created for each VLAN. | Inter-VLAN Routing |
| It is a logical grouping of devices in a network. | VLAN |
| All devices are in one broadcast domain | Flat Network |
| VLAN 1 by default | Default VLAN |
| VLAN that carries untagged traffic | Native VLAN |
| Port that carries multiple VLANs | Trunk Port |
| Port assigned to one VLAN only | Access Port |
| Communication between VLANs | Inter-VLAN Routing |
| The default VLAN on Cisco switches. | VLAN1 |
| VLAN used for untagged traffic. | Native VLAN |
| Which command creates a VLAN? | vlan 10 |
| Which VLAN should not be used for normal traffic? | VLAN 1 |
| Which routing method uses one trunk link? | Router-on-a-Stick |
| Which command checks VLAN information? | show vlan |
| Which protocol standard supports VLAN tagging? | IEEE 802.1Q |
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user-1782765