Juniper Updated JN0-232 Exam Questions and Answers by crystal

The trace output shows that the SRX receives the ICMP packet, does not find an existing session, starts first path processing, and then drops the packet with a firewall check failure before a session is successfully created. In SRX troubleshooting, first path processing includes route lookup, policy evaluation, and session creation. If the device cannot determine a valid forwarding path for the destination, the session cannot be established and the packet is dropped. The exhibit does not show evidence of a web filtering decision, ALG processing, or a screen counter match. Therefore, the best answer is that there is no known route to the destination 192.0.2.128. The appropriate operational verification would be to check the routing table using a command such as show route 192.0.2.128.

From the exhibit:

The internal host (172.25.11.101) is located in the Trust zone .

The external address (203.0.113.199/30) is used for communication with the ISP.

The requirement is that sessions can only be initiated from the external device (the ISP or untrust side) toward the internal host.

This requirement matches the behavior of Destination NAT :

Destination NAT only (Option A): Maps the external/public IP (203.0.113.199) to the internal/private IP (172.25.11.101). This allows inbound connections to be translated and sent to the internal host. The internal host cannot initiate outbound sessions, since the translation only applies to inbound traffic.

Source NAT only (Option B): Used for outbound sessions from internal private IPs to the Internet. This does not meet the requirement.

Static PAT (Option C): Maps a single port of a public IP to a private IP/port. The exhibit does not indicate a port-based translation.

Static NAT and source NAT (Option D): Would provide bidirectional communication, allowing sessions to be initiated in both directions. This contradicts the requirement.

Correct NAT Type: Destination NAT only