Free Zscaler ZDTA Actual Exam Questions - Question 9 Discussion
over non-standard ports to bypass its controls?
Option A seems solid because Deep Packet Inspection looks inside the traffic, catching evasions that just relying on endpoint tools or IPS might miss. It’s more proactive than just blocking invalid transactions.
I’m thinking B makes sense because the Client Connector works at the endpoint level, so it can catch evasion attempts before they even reach the cloud firewall. The OS firewall backing it up adds another layer, preventing apps from sneaking traffic over weird ports. A relies more on inspecting traffic after it leaves the endpoint, which might miss some tricks that never get sent out in the first place. So B seems like the best fit for stopping evasion by controlling it right where it starts.
D. The IPS engine blocking invalid transactions sounds plausible, but it might miss evasions that don’t trigger signature-based detection, so it's probably not as thorough as DPI in A.
I doubt C since relying solely on on-prem firewalls seems outdated for cloud setups, so A.
A. The Cloud Firewall’s Deep Packet Inspection seems designed to catch evasions by analyzing the protocol itself, which makes sense for spotting apps trying to sneak through on weird ports. While IPS in D could block bad traffic, DPI is more about detecting tricks in the data flow. B and C rely more on other layers or devices, so they don’t really answer if the Cloud Firewall alone can spot these evasions. If the firewall didn’t have DPI, evasions would be harder to detect just based on network rules, so A looks like the solid choice here.
A/B? DPI in A detects evasions, but B adds endpoint prevention, strengthening overall coverage.
A/C? A seems strong with DPI catching evasions by digging into packet content, which fits the question about detection on non-standard ports. C feels off since it's about on-prem firewalls handling evasions, but the question is about the Cloud Firewall itself, so probably not the best fit here. B and D feel more about endpoint or IPS engines, which might not fully address evasion detection in Cloud Firewall context specifically. So between A and C, A looks like the better match for detecting evasions in the cloud environment.
D imo, because IPS engines are specifically designed to detect and block evasions by identifying malicious patterns or invalid traffic regardless of ports. A’s DPI is good for protocol inspection, but IPS directly targets evasions which might slip through DPI alone. B and C seem less relevant since B is endpoint-focused and C relies on on-prem firewalls, not the Cloud Firewall itself.
A imo, because DPI is designed to catch those tricky evasions by inspecting the packet content, not just relying on ports. B feels more like endpoint stuff, not the Cloud Firewall itself.
Option B makes sense since stopping evasion right at the endpoint with the Client Connector adds a crucial layer before traffic even hits the firewall, which might miss some crafty evasion attempts.
A/D? The firewall’s DPI (A) definitely detects evasions, but the IPS engine (D) also plays a role by blocking invalid traffic. Could be both working together rather than just one.
Maybe B is worth considering since the Client Connector on endpoints could stop evasion before it reaches the Cloud Firewall, adding an extra layer of control beyond just DPI.
I get why A sounds right because DPI should catch evasions, but B also seems relevant since the Client Connector works on the endpoint level to block evasion attempts before traffic even hits the firewall. If the endpoint stops applications from using non-standard ports in the first place, that adds a layer of defense. Could B be an important part of the overall evasion detection strategy rather than just relying on DPI in the Cloud Firewall alone?
A makes the most sense since DPI is designed to spot those evasions, so I’d go with that.