Which of the following is NOT a typical SLA metric?

• A. Uptime
• B. Latency
• C. Throughput
• D. Encryption key length

Answer: (D)

SLA metrics focus on how well a service performs and stays available. Uptime measures how often the service is up, latency tracks how quickly responses are returned, and throughput shows how much work the system handles over time. Encryption key length, on the other hand, is a security parameter that defines cryptographic strength. It governs how hard it is to break the encryption, not how fast the service responds or how reliably it runs. Security settings like key length are typically covered under security guarantees rather than standard performance and availability SLAs. So encryption key length isn’t a typical SLA metric.