Which of the following terms describes the state of a system's inability to respond to new requests due to too many users?

The term that describes a system's inability to respond to new requests due to too many users is referred to as overload. When a system experiences overload, it becomes overwhelmed with incoming requests, resulting in degraded performance or complete failure to respond. This situation typically occurs when the number of concurrent users exceeds the system's capacity to handle those requests, leading to potential bottlenecks and eventually rendering the service unavailable.

Overload can occur in various systems, including web servers, databases, and network devices. It highlights the importance of understanding a system's capacity and scalability to ensure that it can handle peak loads and provide a consistent user experience.

The other options, while related to performance and network issues, do not specifically capture the essence of a system being unable to respond due to an excessive number of users. For instance, a DDoS attack refers to a specific malicious attempt to disrupt services by overwhelming a system, whereas latency refers to delays in processing requests, and throughput measures the amount of data processed in a given time. Each of these concepts is important in networking but does not define the general state of overload as concisely as the term itself.