The correct answer is B. False . In Zero Trust architecture, inspection of encrypted traffic is a major requirement because most internet traffic is now encrypted, and threats frequently hide inside TLS/SSL sessions. However, Zscaler’s TLS/SSL inspection reference guidance explains that this type of inspection is not widely available at scale on most traditional network-based security platforms . Conventional security appliances typically experience a major reduction in effective traffic-handling capacity when decryption is enabled, which is one of the main reasons many legacy environments only inspect a limited subset of encrypted traffic.

This limitation is important in Zero Trust because selective inspection creates blind spots. If encrypted traffic is not inspected broadly, malware delivery, command-and-control activity, risky application behavior, and data exfiltration can bypass security controls. Zscaler’s architecture is designed to move this function to a cloud-delivered inline security model so inspection can occur more consistently and at scale. Therefore, the statement is false because traditional firewalls and similar appliances have historically struggled to provide encrypted content inspection broadly and efficiently enough for modern Zero Trust needs.