PCNSE PCNSE Palo Alto Networks Firewall Configuration 4 — Questions and Answers
Question 1: A PAN-OS administrator needs to ensure that a specific critical server in the DMZ is always reachable via the same public IP, regardless of which interface handles the traffic. Which NAT type achieves this?
- Dynamic IP and Port (DIPP) NAT
- Static NAT with bidirectional enabled (Correct answer)
- Dynamic IP NAT with address pool
- Destination NAT only
Correct answer: Static NAT with bidirectional enabled
Static NAT with bidirectional enabled creates a permanent one-to-one mapping between a private IP and a public IP, allowing both inbound and outbound traffic translation.
Question 2: Which PAN-OS operational mode allows an administrator to test configuration changes in a sandboxed environment before committing them to the running configuration?
- Debug mode
- Candidate configuration (Correct answer)
- Maintenance mode
- Preview configuration
Correct answer: Candidate configuration
The candidate configuration in PAN-OS stores uncommitted changes that can be tested and reviewed before being committed to the active running configuration.
Question 3: When WildFire analysis identifies a previously unknown file as malware, how does PAN-OS distribute the new threat signature to subscribed firewalls?
- Via manual download from the support portal only
- Automatically through WildFire signature updates, delivered within minutes of verdict generation (Correct answer)
- Through the next daily content update package
- Via Panorama push only
Correct answer: Automatically through WildFire signature updates, delivered within minutes of verdict generation
WildFire delivers new malware signatures to subscribed firewalls within approximately 5 minutes of verdict generation through automated signature updates.
Question 4: An administrator is troubleshooting why traffic matching a security policy rule is being dropped. The 'test security-policy-match' CLI command shows the correct rule, but traffic still fails. What should be checked next?
- Verify the security profile applied to the rule is not blocking the traffic (Correct answer)
- Re-run the commit to refresh the policy
- Check if the interface is in layer 3 mode
- Increase the session limit on the firewall
Correct answer: Verify the security profile applied to the rule is not blocking the traffic
Even when a security rule allows traffic, an attached Security Profile (e.g., Vulnerability Protection, Antivirus) may detect and block the traffic based on threat content.
Question 5: Which Panorama feature allows an administrator to push a consistent set of interface, routing, and zone configurations to multiple managed firewalls using a template-based approach?
- Device Groups
- Templates and Template Stacks (Correct answer)
- Shared Policy
- Config Sync
Correct answer: Templates and Template Stacks
Panorama Templates define network-level settings (interfaces, routing, zones), and Template Stacks allow layering templates for hierarchical configuration push to managed firewalls.
Question 6: A Palo Alto firewall is configured in Virtual Wire (V-Wire) mode. Which statement accurately describes a characteristic of this deployment mode?
- The firewall requires IP addresses on all interfaces for traffic forwarding
- The firewall is transparent to the network — no IP routing changes are needed (Correct answer)
- NAT policies are required for all traffic passing through the firewall
- Virtual Wire mode only supports IPv4 traffic
Correct answer: The firewall is transparent to the network — no IP routing changes are needed
Virtual Wire mode makes the firewall completely transparent to the network, requiring no changes to IP addressing or routing infrastructure on adjacent devices.
Question 7: Which command in the PAN-OS CLI is used to view the current session table and verify that traffic is being processed correctly through the firewall?
- show routing table
- show session all (Correct answer)
- debug dataplane packet-diag
- show system resources
Correct answer: show session all
'show session all' displays the active session table, showing source/destination IPs, ports, applications, and the security rule applied to each session.
PCNSE PCNSE Palo Alto Networks Firewall Configuration 4
A PAN-OS administrator needs to ensure that a specific critical server in the DMZ is always reachable via the same public IP, regardless of which interface handles the traffic.
Which NAT type achieves this?