What is one impact of using a Guest VLAN?

Using a Guest VLAN significantly enhances network security by restricting user access. A Guest VLAN is designed primarily for users who are not part of the primary network, such as visitors or temporary users. By placing these users on a separate VLAN, the network can control and limit their access primarily to the internet or other specific resources without allowing them to access sensitive internal systems or data.

This is crucial for maintaining the integrity and security of the main network; it mitigates risks by ensuring that guest users cannot interact with internal traffic or devices that could be exploited or compromised. The separation provided by a Guest VLAN is a common best practice in network design to safeguard against potential threats from outside users.

In contrast, other options suggest either unrestricted access or compare the Guest VLAN to other types of VLANs, which do not reflect its primary purpose of access restriction.