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300-410 Practice Question: Which TWO statements about IPv4 extended access…
Which TWO statements about IPv4 extended access control lists are true? (Choose TWO.)
⚠ Common exam trap
Cisco often tests the misconception that extended ACLs can only be numbered, but they support named ACLs as well, and that wildcard masks apply only to one address field, whereas they apply to both source and destination.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
They can filter based on source and destination IP addresses.
IPv4 extended ACLs can filter traffic based on both source and destination IP addresses, as well as protocol type, port numbers, and other parameters. This is defined in the access-list command syntax (e.g., access-list 100 permit tcp 10.0.0.0 0.255.255.255 192.168.1.0 0.0.0.255 eq 80), which allows granular control beyond standard ACLs that only filter on source IP.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
They can filter based on source and destination IP addresses.
Why this is correct
Extended ACLs can specify both source and destination addresses in the permit/deny statement.
- ✓
They are typically placed as close to the source as possible.
Why this is correct
Best practice for extended ACLs is to apply them near the source to conserve bandwidth.
- ✗
They use a wildcard mask only for the destination address.
Why it's wrong here
Wildcard masks are used for both source and destination addresses in extended ACLs.
- ✗
They can be named using numbers only.
Why it's wrong here
Numbered ACLs use numbers; named ACLs use alphanumeric names.
- ✗
They automatically log all matched packets.
Why it's wrong here
Logging requires the 'log' keyword; it is not automatic.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.