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ISC2 CISSP Practice Question

An information security architect is designing a public key infrastructure (PKI) to support mutual TLS authentication across hundreds of internal microservices deployed worldwide. The architect can either rely on individually trusted self-signed certificates, a web-of-trust model, or build an internal X.509 certificate-authority hierarchy. Which advantage of using a certificate-authority hierarchy BEST supports the architect's decision?

  • Removal of private key material from the environment

  • Reduced cryptographic processing load on service instances

  • Centralized trust anchor and automated certificate lifecycle management

  • Guaranteed prevention of all man-in-the-middle attacks

ISC2 CISSP
Security Architecture and Engineering
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