A ip-prefix list1 index 10 permit 10.1.0.0 24 greater-equal () less-equal 32 means that the first 24 bits of the matching network address are the same as 10.1.0.0, and the network mask length is…

Question

Options

• A26
• B24
• C28
• D25

• A
  73% (33)
• B
  4% (2)
• C
  7% (3)
• D
  16% (7)

Explanation

Option A (26) is correct because the question itself states the condition - "greater than or equal to 26" - and the blank in the greater-equal () field is exactly what completes that statement, making 26 the direct fill-in answer.

Option B (24) is wrong because 24 is the base prefix length of the network 10.1.0.0/24, not the ge value; using ge 24 would match from /24 upward, which contradicts the stated lower bound of 26. Option C (28) is wrong because ge 28 le 32 would match only /28 through /32, missing the /26 and /27 subnets included in the described range. Option D (25) is wrong because ge 25 le 32 starts one step below the correct lower bound, matching /25 through /32 instead of /26 through /32.

Memory tip: In IP prefix lists, the ge value sets the floor of the prefix length range and must be strictly greater than the base prefix length (here /24 < /26). Read the question's own description carefully - the stated ge bound is always the answer to a fill-in-the-blank like this one.

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