Encrypted traffic must be decrypted before platform services can inspect headers, payloads, files, and content for policy enforcement. TLS Decryption is the Zscaler platform service that converts encrypted sessions into inspectable traffic inside the proxy architecture, then re-encrypts the traffic after policy decisions are applied. Option D (TLS Inspection) is correct because visibility into encrypted communications depends on TLS Inspection/Decryption, not on the downstream policy module itself.
Why the other options are incorrect:
A. Antivirus: Antivirus scans files and objects for known malware. Visibility into encrypted traffic requires TLS Inspection before AV can inspect HTTPS content.
B. Tenant Restrictions: REST uses resource-oriented URLs and HTTP methods such as GET, POST, PUT, and DELETE.
C. Web Filtering: Web Filtering controls URL/category access. It does not decrypt encrypted payloads for deeper inspection.
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