Exam ZTCA Topic 2 Question 51 Discussion

The correct answer is A . Zscaler's Zero Trust architecture explicitly states that applications should be inaccessible unless the user is authorized and that the attack surface should remain invisible even to authorized users until policy allows access. The ZPA segmentation guidance says that decoupling the user from network-based access makes applications invisible unless the user is authorized, and the Universal ZTNA guide similarly states that applications should be inaccessible unless the user is authorized.
This means internal applications should not be exposed by default through open inbound listeners or broad network reachability. The Zero Trust model is to keep applications effectively dark to unauthorized initiators and make them available only through the policy-brokered access path. That is more secure than allowing direct access for on-site users, managed devices, or VPN-connected users, because those approaches reintroduce implicit network trust.
Therefore, the correct implementation is to avoid direct exposure of internal applications and allow access only for authorized users through the Zero Trust access model . That aligns directly with ZPA's goal of no broad network access and no lateral movement.