Which of the following descriptions about ACL classification numbers are correct? (Multiple choice)

Question

Options

• ALayer 2 ACL number range: 6000~6999
• BUser-defined ACL number range: 5000~5999
• CUser ACL: 7000~7999
• DBasic ACL number range: 2000~2999
• EAdvanced ACL number range: 3000~3999

• A
  4% (2)
• B
  85% (46)
• C
  9% (5)
• E
  2% (1)

Explanation

Options D and B correctly state the standard ACL classification number ranges on Huawei devices: Basic ACLs (which filter by source IP only) are numbered 2000–2999, and User-defined ACLs (which match based on custom offsets within a packet) are numbered 5000–5999.

The distractors contain number range swaps designed to trip you up:

• A is wrong - Layer 2 ACLs use 4000–4999, not 6000–6999.
• C is wrong - User ACLs use 6000–6999, not 7000–7999 (7000+ is not a defined standard category).
• E is a notable trap - Advanced ACLs (which filter by source/destination IP, port, and protocol) actually do use 3000–3999, so this statement is correct; its exclusion from the answer key suggests the exam may have an error, but if forced to choose only two, B and D are unambiguous.

Memory tip: Think of ACL types climbing a ladder of complexity, with each category occupying the next thousand-block - 2000 Basic, 3000 Advanced, 4000 Layer 2, 5000 User-defined, 6000 User - so the complexity roughly increases as the range numbers increase.

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