The TCP MSS (Maximum Segment Size) defines the maximum TCP payload size, excluding headers. When the firewall sets MSS to 1450 bytes, the TCP segment size is limited to this value. For IP packets, the total size includes the TCP header (20 bytes) and IP header (20 bytes), so 1450 (MSS) + 20 (TCP) + 20 (IP) = 1490 bytes, which fits within both link MTUs (1500 and 1496 bytes). Thus, the maximum IP packet size is not limited by the link MTUs but by the MSS, adjusted for headers. Options C and F (bits) are incorrect units; A and B exceed the MSS limit. Exact extract: "The TCP MSS is adjusted to prevent fragmentation... FortiGate can rewrite the MSS in TCP SYN packets to ensure the total IP packet size (including IP and TCP headers) does not exceed the configured value."

When a FortiGate's CPU enters conserve mode due to high load, proxy-based inspection (e.g., web filtering, DLP) is disabled to reduce resource usage, while flow-based inspection continues. Traffic isn't fully blocked (A), new sessions may still be processed (C), and routing protocols (D) are unaffected. Exact extract: "In conserve mode, FortiGate disables proxy-based inspection to reduce CPU and memory load, switching to flow-based inspection to maintain performance."

The Fortinet Security Fabric provides a centralized management platform for multiple Fortinet devices (e.g., FortiGate, FortiSwitch, FortiAP), enabling coordinated security policies, telemetry sharing, and simplified administration. It does not directly speed up VPNs (B), reduce firewall policies (C), or auto-configure VLANs (D). Exact extract: "The Fortinet Security Fabric enables centralized management and visibility across Fortinet devices, allowing coordinated security policies and telemetry sharing for enhanced protection."

When a router, such as a FortiGate, receives a packet with a TTL (Time to Live) of 1, it decrements the TTL to 0, drops the packet, and sends an ICMP Time Exceeded message to the source IP. This prevents infinite loops in routing. Option A is incorrect as TTL is decremented, not incremented; B and D are incorrect as the packet is not forwarded when TTL reaches 0. Exact extract: "When a packet's TTL reaches 1, the router decrements it to 0, drops the packet, and sends an ICMP Time Exceeded message to the source IP address to prevent routing loops."

Out-of-order packets after FIN/ACK indicate a packet arriving in the TIME_WAIT state, where the session is closing. The TCP time-wait timer controls how long the firewall keeps the session in the TIME_WAIT state to handle late packets. Increasing this timer allows the firewall to accept such packets instead of dropping them. Close-wait timer relates to a different state, TCPMSS affects packet size, and "Enable TCP option" is not a standard parameter. Exact extract: "The TCP time-wait timer determines how long a session remains in the TIME_WAIT state to handle out-of-order or retransmitted packets after FIN/ACK... Adjusting this timer can prevent drops of late-arriving packets."