Which of the following is designed to verify and authenticate individuals taking part in a data exchange within an enterprise?

SOA (Service-Oriented Architecture) is a software design paradigm for building distributed services and does not authenticate individuals in a data exchange.

Single Sign-On allows a user to authenticate once and access multiple systems, but it does not provide the certificate-based identity verification used to authenticate parties within a data exchange.

PKI uses digital certificates issued by Certificate Authorities (CAs) to cryptographically bind an identity to a public key, enabling both verification and authentication of individuals or systems during data exchange. Within an enterprise, a PKI provides the trust infrastructure for secure communications, digital signatures, and encrypted transactions.

Biometrics authenticates users via physical characteristics such as fingerprints or retinal scans, but it is an authentication input method rather than an enterprise framework for verifying parties in a data exchange.