Which item is the three-tuple <ts, T, U> where ts is date/time, T is duration, U is a percentage between 0 and 100%?

• A. SWVC Reserved Prefixes
• B. SWVC List of Policies
• C. SWVC End Point Identifier
• D. SWVC Service Uptime Objective Service Attribute

Answer: (D)

A time-bound performance goal is represented by a three-tuple where ts marks the start time, T defines the window duration, and U is the target percentage. The uptime objective service attribute is exactly this kind of description: it specifies a target uptime percentage (U) to achieve within a given time window (T) starting at a specific moment (ts). In other words, it encodes how much availability is required over a defined period, which is the essence of the <ts, T, U> tuple.

The other items describe static or non-time-bound concepts: reserved prefixes relate to addressing, a list of policies is a collection of rules, and an end point identifier is simply an identifier for a device or location. None of these convey a time window paired with a percentage-based target, so they don’t fit the <ts, T, U> pattern.