- A
Step 1: Define the ACL with permit and deny statements. Step 2: Apply the ACL inbound on GigabitEthernet0/1. Step 3: Verify the ACL configuration.
This is the correct order: first create the ACL with the required permit and deny statements, then apply it to the interface in the inbound direction, and finally verify the configuration to ensure it is working as intended.
- B
Step 1: Apply the ACL inbound on GigabitEthernet0/1. Step 2: Define the ACL with permit and deny statements. Step 3: Verify the ACL configuration.
Why wrong: This is incorrect because you cannot apply an ACL that has not been defined yet. The ACL must be created before it can be applied to an interface.
- C
Step 1: Define the ACL with permit and deny statements. Step 2: Verify the ACL configuration. Step 3: Apply the ACL inbound on GigabitEthernet0/1.
Why wrong: This is incorrect because verification should occur after the ACL is applied to confirm that it is functioning correctly. Applying the ACL after verification would not test the actual traffic filtering.
- D
Step 1: Apply the ACL inbound on GigabitEthernet0/1. Step 2: Verify the ACL configuration. Step 3: Define the ACL with permit and deny statements.
Why wrong: This is incorrect because it has multiple errors: the ACL must be defined before it can be applied, and verification should occur after application. This order is completely reversed.
CCNA Network Services and Security Practice Question
This 200-301 practice question tests your understanding of network services and security. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Drag and drop the following steps into the correct order to plan, configure, and apply an extended ACL that permits web traffic from the 10.1.1.0/24 network to the server 192.168.2.10 while blocking all other traffic inbound on GigabitEthernet0/1.
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
Step 1: Define the ACL with permit and deny statements. Step 2: Apply the ACL inbound on GigabitEthernet0/1. Step 3: Verify the ACL configuration.
ACL configuration requires defining permit/deny statements first, then applying to the interface inbound, and finally verification.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Step 1: Define the ACL with permit and deny statements. Step 2: Apply the ACL inbound on GigabitEthernet0/1. Step 3: Verify the ACL configuration.
Why this is correct
This is the correct order: first create the ACL with the required permit and deny statements, then apply it to the interface in the inbound direction, and finally verify the configuration to ensure it is working as intended.
Related concept
Standard ACLs match source addresses.
- ✗
Step 1: Apply the ACL inbound on GigabitEthernet0/1. Step 2: Define the ACL with permit and deny statements. Step 3: Verify the ACL configuration.
Why it's wrong here
This is incorrect because you cannot apply an ACL that has not been defined yet. The ACL must be created before it can be applied to an interface.
- ✗
Step 1: Define the ACL with permit and deny statements. Step 2: Verify the ACL configuration. Step 3: Apply the ACL inbound on GigabitEthernet0/1.
Why it's wrong here
This is incorrect because verification should occur after the ACL is applied to confirm that it is functioning correctly. Applying the ACL after verification would not test the actual traffic filtering.
- ✗
Step 1: Apply the ACL inbound on GigabitEthernet0/1. Step 2: Verify the ACL configuration. Step 3: Define the ACL with permit and deny statements.
Why it's wrong here
This is incorrect because it has multiple errors: the ACL must be defined before it can be applied, and verification should occur after application. This order is completely reversed.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓Step 1: Define the ACL with permit and deny statements. Step 2: Apply the ACL inbound on GigabitEthernet0/1. Step 3: Verify the ACL configuration.Correct answer▾
Why this is correct
This is the correct order: first create the ACL with the required permit and deny statements, then apply it to the interface in the inbound direction, and finally verify the configuration to ensure it is working as intended.
✗Step 1: Apply the ACL inbound on GigabitEthernet0/1. Step 2: Define the ACL with permit and deny statements. Step 3: Verify the ACL configuration.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error is that the ACL must be defined before it can be applied. Applying a non-existent ACL would result in an error.
Why candidates choose this
Candidates might think that applying the ACL first and then defining it is acceptable because they confuse the order of operations with other configuration steps where the interface is selected first.
✗Step 1: Define the ACL with permit and deny statements. Step 2: Verify the ACL configuration. Step 3: Apply the ACL inbound on GigabitEthernet0/1.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error is that verification is a post-implementation step. Applying the ACL after verification would mean the verification did not test the applied ACL.
Why candidates choose this
Candidates might think verification should be done before applying to catch errors early, but in practice, verification of ACLs involves checking the applied configuration and testing traffic flow.
✗Step 1: Apply the ACL inbound on GigabitEthernet0/1. Step 2: Verify the ACL configuration. Step 3: Define the ACL with permit and deny statements.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error is that both the definition and verification steps are out of order. The ACL cannot be applied or verified before it is defined.
Why candidates choose this
Candidates might be confused by the sequence and think that applying and verifying first is a way to test the interface, but they overlook the necessity of having the ACL defined first.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 200-301 ACL questions on filtering logic and placement.
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FAQ
Questions learners often ask
What does this 200-301 question test?
Network Services and Security — This question tests Network Services and Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Step 1: Define the ACL with permit and deny statements. Step 2: Apply the ACL inbound on GigabitEthernet0/1. Step 3: Verify the ACL configuration. — ACL configuration requires defining permit/deny statements first, then applying to the interface inbound, and finally verification.
What should I do if I get this 200-301 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 200-301 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
About these practice questions
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Last reviewed: Jun 6, 2026
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