VLAN Arrangements: Characteristics, Examples, and Benefits

Typical Characteristics of VLAN Arrangements


Which three statements are typical characteristics of VLAN arrangements? (Choose three.)



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A. B. C. D. E. F.


VLAN (Virtual Local Area Network) is a logical grouping of network devices that are located in different physical locations but communicate with each other as if they are in the same physical network. VLANs have the following typical characteristics:

A. A new switch has no VLANs configured. This is true, as VLANs must be manually created and configured on a switch. By default, all ports on a switch belong to the default VLAN, which is usually VLAN 1.

B. Connectivity between VLANs requires a Layer 3 device. This is also true, as VLANs are separate broadcast domains and cannot communicate with each other without a Layer 3 device, such as a router, to route traffic between them.

C. VLANs typically decrease the number of collision domains. This statement is partially true. VLANs can reduce the number of collision domains, but this depends on how they are configured. If all devices within a VLAN are connected to the same switch, then there is only one collision domain for that VLAN. However, if devices in the same VLAN are connected to multiple switches, then there will be multiple collision domains for that VLAN.

D. Each VLAN uses a separate address space. This statement is also true. Each VLAN has its own unique IP address range and subnet mask. This allows for more efficient use of IP address space and enables devices in different VLANs to communicate with each other using unique IP addresses.

E. A switch maintains a separate bridging table for each VLAN. This statement is true. A switch maintains a separate MAC address table (also known as a bridging table or forwarding table) for each VLAN. This allows the switch to forward frames only to the ports where the destination device is located, improving network performance and reducing unnecessary network traffic.

F. VLANs cannot span multiple switches. This statement is false. VLANs can span multiple switches, as long as the switches are configured correctly. This is achieved through the use of trunk links, which allow VLAN traffic to be transported between switches.