Which of the following is a parameter commonly specified in a Service Level Agreement (SLA)?

In the context of a Service Level Agreement (SLA), availability and latency are critical parameters that define the performance and reliability expectations between a service provider and a customer.

Availability refers to the percentage of time that a service is operational and accessible to end-users, which is vital for businesses relying on uninterrupted service. Latency measures the delay experienced in data communication across the network, directly affecting user experience, especially in real-time applications.

These metrics are essential for understanding the service provider's commitments and the quality of service the customer can expect. They are commonly included in SLAs because they provide tangible benchmarks for performance and reliability that can be measured and enforced.

While other options like data compression rates, internet browsing speed, and video quality metrics might be relevant in different contexts or specific agreements, they do not carry the same level of importance or commonality in standard SLAs for service providers and carriers compared to availability and latency. These latter parameters are foundational to the operational effectiveness of Ethernet and other data services.