Which of these is not a feature of WAP 2.0?

Concept

A protocol feature is a capability defined by that protocol suite. A general-purpose operation may be used inside an implementation without being a named platform capability.

WAP 2.0 expanded the mobile-web environment through communication, messaging, and device-service capabilities.

Application

The WAP Forum materials identify push alongside the traditional pull model, Multimedia Messaging Service (MMS), and a Persistent Storage Interface for organizing, accessing, storing, and retrieving device data. Hashing is instead a general cryptographic operation that maps data to a digest; it is not listed as one of these WAP 2.0 platform capabilities.

Contrast

• Push and Pull Model: supports both client-requested content and server-initiated delivery.

• Interface to a storage device: exposes persistent-storage services for data held on the wireless device.

• Multimedia messaging: supplies the MMS framework for messages containing multiple media types.

• Hashing: supplies a general one-way digest operation used in cryptographic systems.

Result

Therefore, the value that is not a WAP 2.0 feature is Hashing.