What is a DApp?

A decentralized application, commonly referred to as a DApp, is defined by its operational framework that utilizes a peer-to-peer network rather than relying on centralized servers for its hosting and functionality. This characteristic allows DApps to take advantage of the inherent benefits of blockchain technology, such as improved security, transparency, and resilience against censorship or downtime.

In a DApp, back-end code runs on a decentralized network, enabling users to interact directly with the blockchain, which ensures that no single entity has control over the application's operation or data. This empowers users and promotes trust, as the integrity of the application is maintained by the network's consensus mechanisms.

The other choices do not encapsulate the essence of a DApp accurately. Centralized applications with blockchain elements still depend on a central authority, negating the decentralized aspect. Mobile apps for cryptocurrency trading pertain specifically to trading functions and do not reflect the broader concept of DApps that can serve various purposes. Gaming applications specific to Ethereum would be considered a subset of DApps but do not encompass the entire definition, which includes various types of applications across multiple blockchain platforms.