Quantum-related attack protection requires cryptography resistant to quantum computing, such as post- quantum algorithms. In PAN-OS 11.2, IKEv2 with Hybrid Key Exchange (Option B) combines classical and quantum-resistant algorithms for key exchange, enhancing VPN security. IKEv2 with Post-Quantum Pre- shared Keys (PPK) (Option C) uses pre-shared keys designed to resist quantum attacks, supported in IKEv2 configurations.
Option A (IKEv1 only) weakens security by avoiding PFS and modern cryptography. Option D (IPsec with Hybrid ID exchange) is not a valid PAN-OS feature. Documentation confirms IKEv2 enhancements for quantum resistance.
Reference: PAN-OS 11.2 Administrator's Guide, "VPNs" section - IKEv2 and Quantum-Resistant Cryptography.

A syslog listener is the best choice for deploying User-ID to ensure maximum coverage in an environment with multiple forms of authentication. A syslog listener is a feature that enables the firewall or Panorama to receive syslog messages from other systems and parse them for IP address-to-username mappings. A syslog listener can collect user mapping information from a variety of sources, such as network access control systems, domain controllers, MDM solutions, VPN gateways, wireless controllers, proxies, and more2. A syslog listener can also support multiple platforms and operating systems, such as Windows, Linux, macOS, iOS, Android, etc3. Therefore, a syslog listener can provide a comprehensive and flexible solution for User-ID deployment in a large-scale network. References: Configure a Syslog Listener for User Mapping, User-ID Agent Deployment Guide, PCNSE Study Guide (page 48)

A transparent proxy operates by intercepting traffic without client configuration, typically redirecting HTTP (port 80) or HTTPS (port 443) to a proxy port on the firewall. In Palo Alto Networks NGFWs, when configuring a NAT rule for a transparent proxy, the standard translated port is 8080 (Option C), commonly used for proxy services. This port is where the firewall redirects client traffic for processing (e.g., URL filtering or decryption) before forwarding it to the destination.
Option A (80) is the original HTTP port, not a proxy port. Option B (443) is for HTTPS, not transparent proxy redirection. Option D (4443) is non-standard and unrelated. Documentation and best practices confirm
8080 for this use case.
Reference: PAN-OS 11.2 Administrator's Guide, "NAT" section - Transparent Proxy Configuration; Palo Alto Networks Tech Docs - Transparent Proxy Deployment.