Trusted Third Party (Bridge) is best described as which concept?

• A. An open standard decentralized protocol for authentication users.
• B. Allows organizations to place their trust in a single third-party.
• C. Utilizes a web of trust between organizations where they certify one another inside the federation.
• D. Provides authorization and specifies what access rights and privileges a user will have on a given system.

Answer: (B)

A trusted third party bridge is a central broker that organizations rely on to vouch for identities across domains. By placing trust in this single third party, each organization can accept authentication assertions from the bridge rather than building direct trust with every other organization. This centralizes the trust anchor and simplifies federation and single sign-on, since the bridge handles validating users and issuing the credentials that partner domains recognize. The approach trades off decentralization for easier management and interoperability, which is why it’s described as trusting a single third party. In contrast, an open standard decentralized protocol would imply no single trust anchor, a web of trust involves mutual certification directly between organizations, and focusing on authorization describes what a user can access rather than how trust is established.