Which of the following is designed to distribute network traffic among devices based on the quantity of traffic?

A load balancer intelligently distributes incoming network traffic across a group of backend servers or resources, often based on algorithms that consider server health, current load, or other metrics. This prevents overload on any single server, improving overall application availability and responsiveness by ensuring efficient use of resources.

A router forwards packets between different networks based on IP addresses and routing tables, not primarily for distributing traffic among multiple servers for load sharing.

A proxy server acts as an intermediary for requests from clients seeking resources from other servers, primarily for security, caching, or anonymity, not for distributing traffic among backend devices.

A switch connects devices within a local area network (LAN) by forwarding frames based on MAC addresses, and while it handles traffic, its primary function is not to distribute load across multiple servers.