Huawei Certified Network Professional – Routing and Switching (HCNP-RS, legacy) — Question 13

Which of the following route entries matches ACL 2001 that is defined below?
1.0.0.0/8 ,1.2.0.0/16,1.2.3.0/24,1.2.4.0/24,1.2.5.0/24, 1.2.6.0/24,1.2.7.0/24,1.2.8.0/24
ACL 2001:

Basic ACL 2001, 1 rule -

Ad's step is 5 -
rule 0 permit source 1.2.1.0 0.0.254.255

Answer options

• A. 1.2.3.0/24,1.2.4.0/24, 1.2.5.0/24, 1.2.6.0/24,1.2.7.0/24,1.2.8.0/24
• B. 1.0.0.0/8,1.2.0.0/16,1.2.3.0/24,1.2.4.0/24,1.2.5.0/24, 1.2.6.0/24,1.2.7.0/24,1.2.8.0/24
• C. 1.2.3.0/24,1.2.5.0/24,1.2.7.0/24
• D. 1.2.0.0/16,1.2.4.0/24,1.2.6.0/24,1.2.8.0/24

Correct answer: C

Explanation

The correct answer is C because the rule in ACL 2001 permits the source address range that includes 1.2.3.0, 1.2.5.0, and 1.2.7.0 due to the wildcard mask 0.0.254.255. Options A, B, and D include addresses that do not fall within the permitted range defined by the ACL rule.