CompTIA Network+ Practice Test

What does LLDP stand for in networking?

1. Link Layer Development Protocol

2. Link Layer Discovery Protocol

3. Local Link Discovery Protocol

4. Layered Link Discovery Protocol

The correct answer is: Link Layer Discovery Protocol

Link Layer Discovery Protocol, abbreviated as LLDP, is a network protocol used for network device discovery. It operates at Layer 2 of the OSI model, facilitating the identification of devices connected to a local area network (LAN). LLDP enables network devices to advertise their identity and capabilities to neighboring devices, contributing valuable information about the network's topology. This protocol is instrumental in enabling automatic configuration and management of network devices since it helps network administrators visualize connections and device interfaces. By querying devices through LLDP, network professionals can detect and monitor the devices on their network segment, improving overall management and troubleshooting processes. The other options do not accurately represent the key components and functionalities intended by LLDP. For example, while "Link Layer Development Protocol" might sound plausible, it does not convey the actual discovery capabilities that LLDP provides. Similarly, "Local Link Discovery Protocol" and "Layered Link Discovery Protocol" do not align with the established terminology and purpose of LLDP in the realm of networking. Thus, the accurate choice emphasizes the protocol's essential function in discovering and sharing device information on a network.