ZDX includes endpoint and network-path visibility, including Wi-Fi health indicators. A poor signal can appear in device health telemetry and in Cloud Path Probe context, allowing the administrator to separate a local wireless problem from Zscaler, ISP, or application issues. Option D (Yes, a low Wi-Fi signal may be seen in either the results of a Cloud Path Probe or in the device health Wi-Fi signal indicator) is correct because Wi-Fi signal degradation is visible through ZDX telemetry.

Why the other options are incorrect:

A. Yes, the Wi-Fi hop latency is shown on a cloud path probe: Wi-Fi signal and Wi-Fi hop latency are endpoint/local-network indicators used by ZDX troubleshooting.

B. Yes. but the current Wi-Fi signal strength is only displayed when doing a deep trace: Deep Trace is a detailed diagnostic capture; it is useful, but slower and more manual than Y-Engine root-cause analysis.

C. No, ZDX only works on hardwired devices: ZDX works on supported endpoints running Client Connector, including devices on Wi-Fi. It can expose Wi-Fi signal problems instead of requiring wired-only access.

Zscaler supports up to 1 Gbps per GRE tunnel when internal endpoint addresses are not source-NATed, so one tunnel cannot satisfy a 1.5 Gbps target. The GRE overview documents that limit, and Zscaler’s traffic-forwarding reference architecture states that throughput above 1 Gbps can be handled by adding GRE tunnels. Therefore, two GRE tunnels are the minimum capacity set among the choices. Traffic distribution must preserve flow or source consistency, and Zscaler notes that additional GRE tunnels should originate from unique public IP addresses to avoid repeated authentication and application-session issues. Path MTU Discovery does not increase the one-tunnel ceiling. Two IPsec tunnels provide only 800 Mbps in aggregate because the same reference architecture specifies 400 Mbps per IPsec tunnel. A single IPsec peer is consequently even further below the requirement.

Cloud Browser Isolation protects users by rendering risky web content in a remote browser environment instead of on the endpoint. URL Filtering can use Isolate as an action, so users may still access selected untrusted sites while scripts, active content, and browser-exploit risk remain separated from the device. Option B (A new malicious file was detected by the sandbox due to an “allow and scan” First-Time Action in the sandbox policy) is correct because isolation is an enforceable URL Filtering action, not a separate manual workaround.

Why the other options are incorrect:

A. Zscaler ' s AI/ML based Smart Browser Isolation was triggered due to a users accessing a newly-registered domain: Browser Isolation renders web content remotely so active content never executes directly on the endpoint.

C. A new malicious file was detected by the sandbox due to an “quarantine” First-Time Action in the sandbox policy: Cloud Sandbox detonates and observes suspicious files to identify unknown or advanced malware behavior.

D. Zscaler detected a HIPAA violation with in-band Data Protection scanning: An in-band HIPAA DLP violation would be inline data-protection scanning. The scenario is asking about the specific log/report signal identified by the correct answer.