Which two statements accurately describe a broadcast domain? (Choose two.)
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A. B. C. D.BD
A broadcast domain is a logical division of a computer network where all devices in the domain can receive broadcast messages sent by any other device within the same domain. Broadcast messages are messages sent to all devices in the network segment.
The two statements that accurately describe a broadcast domain are:
B. Broadcast domains consist of devices reachable by frames addressed to the Layer 2 broadcast address.
This statement means that any device within the same broadcast domain can receive broadcast messages sent by any other device in the domain. The Layer 2 broadcast address is a special address that allows a frame to be sent to all devices within a network segment. Broadcast domains are created based on the physical connectivity of devices, and devices connected to the same switch or hub are typically in the same broadcast domain.
C. Broadcast domains require a gateway device such as a router.
This statement means that a broadcast domain cannot communicate with devices outside of the domain without a gateway device, such as a router. A router connects different broadcast domains and forwards traffic between them. A broadcast domain may be composed of multiple VLANs, and a router may be required to enable communication between devices on different VLANs.
A is not an accurate statement because devices in the same broadcast domain do not necessarily have to connect to common switches or hubs. Devices can be connected to different switches or hubs as long as those switches or hubs are connected to each other.
D is not an accurate statement because devices residing on the same VLAN do not necessarily belong to the same broadcast domain. VLANs are a way of creating multiple broadcast domains on the same physical network. Devices on different VLANs are in different broadcast domains and cannot communicate with each other without a router.