Implementing Cisco Network Security (IINS, legacy) — Question 63

Which statement about extended access lists is true?

Answer options

• A. Extended access lists perform filtering that is based on source and are most effective when applied to the destination
• B. Extended access lists perform filtering that is based on source and destination and are most effective when applied to the destination
• C. Extended access lists perform filtering that is based on destination and are most effective when applied to the source

Correct answer:

Explanation

The correct answer is B because extended access lists allow filtering based on both source and destination addresses, which makes them versatile for controlling traffic based on multiple criteria. Option A is incorrect as it only mentions filtering based on the source, while C incorrectly states that they are more effective when applied to the source.