A valid NextGen Web Filtering feature license must be installed to activate the NGWF service on the SRX Series Firewall.
NextGen Web Filtering must be enabled as the default web filtering type so that URL lookups and categorization use the NGWF cloud-based service.

The SRX uses AppID (Application Identification) to classify and inspect application traffic, enabling content-based controls such as web filtering and UTM.
The SRX can identify file types carried within HTTP, FTP, and e-mail protocols, allowing enforcement of content filtering, antivirus scanning, and data protection policies.

Adding interfaces (Option A): An interface must be assigned to a security zone before it can pass traffic. By default, interfaces are in the null zone and cannot send or receive traffic.
Exception traffic (Option B): Security zones define host-inbound-traffic settings, which determine what types of management or control-plane traffic (SSH, ICMP, SNMP) are permitted.
Routing instances (Options C and D): Security zones are specific to a routing instance and cannot include interfaces from multiple instances. Therefore, interfaces in the same zone cannot belong to different routing instances.
Correct Statements: A and B

* Destination NAT purpose (Option C):Used to allow external hosts on the Internet to access internal
/private resources (such as a web server in the DMZ). Destination NAT changes the destination IP of incoming traffic to match the internal server.
* Pool-based NAT (Option D):SRX supports destination NAT pools, allowing multiple public IP addresses or ranges to be translated to internal servers.
* Incorrect options:
* Option A describessource NAT, not destination NAT.
* Option B is incorrect because SRX does not support "interface-based" destination NAT.
Correct Statements:C and D
Reference:Juniper Networks -NAT Types and Configurations (Source, Destination, and Static), Junos OS Security Fundamentals.

A feature profile defines how a specific UTM feature operates, including its behavior, actions, and inspection settings, which are then referenced by UTM policies for enforcement.