Question

Which of the following are true of a VLAN switch? (Check all that apply)

a) Divides a network into smaller, isolated subnetworks
b) Operates at the data link layer
c) Enhances network security
d) Broadcasts data to all connected devices

Answer 1

VLAN switches divide a network into isolated subnetworks, operate at the data link layer, and enhance network security by segmenting traffic. They do not broadcast data to all connected devices but only within the same VLAN.

Step-by-step explanation:

When examining which of the following are true of a VLAN switch, we should evaluate each option against the characteristics of Virtual Local Area Networks (VLANs) and how they operate within network switches. Here is what's true:

• Divides a network into smaller, isolated subnetworks: This is correct. A VLAN switch can create multiple broadcast domains that are segmented from each other, even when sharing the same physical infrastructure.
• Operates at the data link layer: This is also correct. Switches, including VLAN-capable switches, function at the data link layer (Layer 2) of the OSI model, managing traffic based on MAC addresses.
• Enhances network security: This statement is true as well. By segmenting a network into VLANs, a switch can reduce the chances of a security breach as devices on separate VLANs would not be able to communicate directly without proper routing.
• Broadcasts data to all connected devices: This is not accurate in the context of VLANs. A switch with VLAN capabilities will only send broadcasts to devices within the same VLAN, not to all devices on the network.