Which load-balancing method ensures the server with the least network utilization receives new connections?

Which load-balancing method ensures the server with the least network utilization receives new connections?

• A. Least connection
• B. Least bandwidth
• C. Least response time
• D. Least packets

Answer: (B)

When you want to spread new connections based on how much network capacity each server is currently using, you choose a method that uses bandwidth utilization as the routing metric. The server with the least bandwidth being consumed at the moment gets the next connection. This approach helps prevent saturating any link and keeps overall network load balanced across servers. Other metrics measure different things. Least connections looks at how many active connections a server has, which can misrepresent actual bandwidth usage if those connections vary in weight. Least response time prioritizes latency, which can send traffic to a currently fast-but-busy server, not necessarily one with free bandwidth. Least packets counts the number of packets rather than the data rate, so it doesn't directly reflect how much network capacity is being used.

When you want to spread new connections based on how much network capacity each server is currently using, you choose a method that uses bandwidth utilization as the routing metric. The server with the least bandwidth being consumed at the moment gets the next connection. This approach helps prevent saturating any link and keeps overall network load balanced across servers.

Other metrics measure different things. Least connections looks at how many active connections a server has, which can misrepresent actual bandwidth usage if those connections vary in weight. Least response time prioritizes latency, which can send traffic to a currently fast-but-busy server, not necessarily one with free bandwidth. Least packets counts the number of packets rather than the data rate, so it doesn't directly reflect how much network capacity is being used.