Official Answer Key & Detailed Solution
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Correct Answer: Option (A) — Digital security infrastructure
Concept & Option Breakdown
Standard Reference VerifiedPublic Key Infrastructure (PKI) is a set of roles, policies, hardware, software, and procedures needed to create, manage, distribute, use, store, and revoke digital certificates and manage public-key encryption. It forms the backbone of secure digital transactions, digital signatures, and cybersecurity under the IT Act, 2000.
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