1.2 Explain the Functionality of Slow Path and Fast Path for Packet Inspection NETWORK-SECURITY-PROFESSIONAL Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A security analyst is explaining the firewall's processing to a new team member. The analyst states that the fast path is responsible for forwarding packets, while the slow path is responsible for security functions. Is this statement accurate?

   • AYes, the fast path only forwards packets and the slow path performs all security functions.
   • BYes, but only for TCP traffic; the slow path handles all UDP traffic.
   • CNo, the fast path can also perform some security functions, such as session lookup and basic policy checks.
   • DNo, the slow path only handles management traffic, and the fast path handles all forwarded traffic.
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2. 2application · medium

   A junior administrator is learning about the firewall's packet processing. They ask why some packets are processed by the CPU while others are handled by dedicated hardware. What is the most accurate explanation to give?

   • AThe hardware processes all packets, and the CPU is only used for management traffic.
   • BThe CPU is used for all security functions, and the hardware only forwards packets that do not require inspection.
   • CThe CPU handles all packets, but the hardware accelerates the forwarding decision for established sessions.
   • DThe fast path uses hardware offloading for established sessions, while the slow path uses the CPU for new sessions and deep inspection.
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4. 3application · medium

   A security team is investigating a potential malware infection. They notice that the firewall is performing signature matching on a specific stream of traffic. The traffic is part of an established session that has been active for several minutes. Why is the firewall performing signature matching on this established session?

   • AThe session is being processed on the fast path, which performs signature matching on every packet.
   • BThe firewall is performing signature matching on all traffic, regardless of the path, to ensure complete security.
   • CThe session has been flagged for additional inspection, causing its packets to be processed on the slow path.
   • DThe session is new and the firewall is performing the initial security policy check.
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5. 4foundation · easy

   In a Palo Alto Networks firewall, which function is performed in the fast path for packets belonging to an existing session?

   • APerforming user identification for each packet.
   • BRe-evaluating the security policy for each packet.
   • CPerforming protocol decoding to identify application traffic.
   • DApplying security policy actions that were determined during session setup.
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6. 5application · medium

   A network administrator is monitoring a firewall and notices that a large number of packets are being processed by the slow path. The traffic consists of a mix of UDP and TCP packets. Which traffic characteristic is most likely causing this behavior?

   • AThe packets are all part of long-lived, established sessions that are being refreshed.
   • BThe packets are being forwarded based on a static route that has been configured on the firewall.
   • CThe packets are all destined for the firewall's management interface.
   • DThe packets are fragmented and require reassembly before inspection can occur.
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