Which packet filtering statement is true?
- Extended ACLs filter at Layer 3 only.
- Extended ACLs filter at Layer 4 only.
- Standard ACLs filter at Layer 3 only.
- Standard ACLs filter at Layer 4 only.
Explanation: Standard ACLs filter at Layer 3 only.
Exam with this question: 4.1.5 Check Your Understanding - Purpose of ACLs
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