Exam-style question
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Which statement best describes stateful inspection by a firewall?.
- A.It allows every packet that has a valid file extension
- B.It records the state of network connections and uses that information when filtering traffic
- C.It replaces asymmetric encryption with symmetric encryption
- D.It checks only the program code that created a packet
Model answer
What a good answer should say
- It records the state of network connections and uses that information when filtering traffic
Explanation
Why this works
Stateful inspection considers whether a packet belongs to an established or expected connection. This gives the firewall more context than checking each packet in isolation.
Common mistake
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