XSIAM-Engineer Palo Alto Networks XSIAM Engineer Questions and Answers

Cortex XSIAM ingests structured third-party logs (such as CEF, LEEF, and JSON) by breaking down the key-value pairs and saving them in a normalized table format. This enables efficient correlation, analytics, and query performance across diverse log sources while preserving data fidelity.

In a For Each Input loop, each iteration takes the next value from the list inputs while keeping constant inputs unchanged.

On the second iteration:

x = X (second value of W,X,Y,Z)

y = b (second value of a,b,c,d)

z = 9 (constant for all iterations).

So, the values are X, b, 9.

In a Cortex XSIAM parsing rule, the COLLECT section defines the newly created dataset. This section specifies how the parsed fields and data should be structured and stored for further use in analytics and queries.

The correct command is cytool import suex -path , which imports a supplied support exception (suex) file onto a Linux endpoint, ensuring the exception is applied locally.

The correct query is the preset = host_inventory_applications with filters for application_name contains "ai_app" and version in ("12.1", "12.2", "12.4", "12.5"). This directly identifies hosts that have the vulnerable application and specific versions installed, matching the analyst’s request to find assets exposed to the zero-day CVE.

The correct query is the one using preset = metrics_view with

comp sum(total_event_count) as total_events by _reporting_device_name and filtering total_events = 0.

This query directly checks event counts reported by the NGFW ("MainFW"). If no logs are received in the last 30 minutes, the total event count will be 0, which triggers the correlation rule alert.

The parsing_rules_errors dataset records compilation errors that occur when a parsing rule cannot be properly built or executed. This helps engineers identify and fix issues in rule definitions before logs are processed.

To use a custom script in an alert layout, the script must be tagged with "general-purpose-dynamic-section", then a general purpose dynamic section is added to the layout, and finally the section settings are edited to attach the automation script. This ensures the script executes and displays results dynamically within the alert layout.

The applied transformers extract the value of @dirtyId from the root-level Data2 object. The sequence includes trimming using "Id:" and ending with a quotation mark ". As a result, the root @dirtyId value (1) is returned with a leading quotation mark, so the Test result will display "1.

The !setIncidentFields command is used in the Incident War Room to directly update incident fields that are defined in the incident layout, ensuring the incident record reflects the latest information.

A sudden data ingestion loss for a previously successful data source commonly occurs when the API key used for the integration has expired, breaking authentication and preventing further log collection.

When installing optional content packs in Cortex XSIAM, any mandatory dependencies are automatically included. The engineer’s main consideration is whether the additional functionality is needed and whether it may have a performance impact on the system.

To migrate XDR agents without internet from tenant A to tenant B, the engineer must install a new Broker C registered to tenant B to establish communication, and also register Broker A with tenant B so existing agents can transition their communication path smoothly during migration.

The correct command is cytool config proxy --host crtxbroker01.company.net --port 8888, which configures the Cortex XDR agent to route its traffic through the Broker VM acting as a proxy. This allows the agent to register and download updates without requiring direct internet access.