What load balancing algorithm operates by distributing traffic to each server in sequence?

What load balancing algorithm operates by distributing traffic to each server in sequence?

• A. Round Robin
• B. IP Hash
• C. Least Connectivity
• D. Random Selection

Answer: (A)

The load balancing algorithm that distributes traffic to each server in a sequential manner is known as Round Robin. This method works by directing requests to each server in a circular order. When a new request comes in, it is sent to the next server in line, and once the last server is reached, the process loops back to the first server. Round Robin is simple to implement and works well when the servers being utilized have roughly equal capacity and processing power, making it an effective way to evenly distribute the load across the available servers. In contrast, the other algorithms have different mechanisms for traffic distribution. For example, IP Hash allocates requests based on the client's IP address, ensuring that a specific user will always be directed to the same server, which can benefit session consistency. Least Connectivity sends traffic to the server that currently has the fewest active connections, optimizing resource use based on server load rather than simply cycling through servers. Random Selection distributes traffic randomly among the servers, which can lead to uneven load distribution, particularly if traffic patterns are not uniform. Understanding these differences and the specific operational method of Round Robin highlights its effectiveness in scenarios where balanced, even distribution is necessary for optimal server performance.

The load balancing algorithm that distributes traffic to each server in a sequential manner is known as Round Robin. This method works by directing requests to each server in a circular order. When a new request comes in, it is sent to the next server in line, and once the last server is reached, the process loops back to the first server. Round Robin is simple to implement and works well when the servers being utilized have roughly equal capacity and processing power, making it an effective way to evenly distribute the load across the available servers.

In contrast, the other algorithms have different mechanisms for traffic distribution. For example, IP Hash allocates requests based on the client's IP address, ensuring that a specific user will always be directed to the same server, which can benefit session consistency. Least Connectivity sends traffic to the server that currently has the fewest active connections, optimizing resource use based on server load rather than simply cycling through servers. Random Selection distributes traffic randomly among the servers, which can lead to uneven load distribution, particularly if traffic patterns are not uniform.

Understanding these differences and the specific operational method of Round Robin highlights its effectiveness in scenarios where balanced, even distribution is necessary for optimal server performance.