Final answer:
The SLA will fail after five calendar days.
Step-by-step explanation:
The service level agreement (SLA) states that it will fail after seven days. However, since Saturday and Sunday are configured as non-working days in the service calendar, we need to consider only the working days. Assuming a 24-hour workday with no holidays, there are five working days in a week (Monday to Friday). Therefore, the SLA will fail after five calendar days since the non-working days (Saturday and Sunday) are excluded.