- A
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then exit and verify with 'show access-lists'.
This sequence correctly enters configuration mode, creates an extended ACL (number 100) that permits HTTP (TCP port 80, 'www') from the source network to the destination host, applies it inbound on the correct interface, and verifies with 'show access-lists'.
- B
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it outbound on GigabitEthernet0/0 with 'ip access-group 100 out', then exit and verify with 'show access-lists'.
Why wrong: This is incorrect because the ACL is applied outbound, but the requirement specifies inbound on the interface. Applying outbound would filter traffic leaving the interface, not entering it.
- C
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then verify with 'show running-config' without exiting configuration mode.
Why wrong: This is incorrect because the steps omit exiting configuration mode before verification. While 'show running-config' can be run in config mode, the typical verification step is done in privileged EXEC mode after exiting. More importantly, the order lacks a clear exit step, which is part of the standard workflow.
- D
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then exit and verify with 'show ip interface brief'.
Why wrong: This is incorrect because 'show ip interface brief' displays interface IP addresses and status, not ACL configuration. The correct verification command for ACLs is 'show access-lists' or 'show running-config | include access-list'.
Quick Answer
The correct order is: enter global configuration mode, create the ACL with access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www, apply it inbound on GigabitEthernet0/0 with ip access-group 100 in, then exit and verify with show access-lists. This sequence is correct because extended ACLs must be created before they can be applied to an interface, and the permit statement must specify both source and destination, including the protocol (TCP) and the destination port (www/80) to restrict traffic to HTTP only. On the CCNA 200-301 v2 exam, this drag-and-drop task tests your ability to follow the exact extended ACL configuration steps on a Cisco router, a common simulation topic where the biggest trap is forgetting to apply the ACL inbound on the correct interface or using the wrong wildcard mask. Remember the mnemonic “Create, Apply, Verify” to lock in the workflow, and always double-check that the access-list number (100-199 or 2000-2699) matches the ip access-group command.
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 configure and apply an extended ACL that permits only HTTP traffic from the 192.168.1.0/24 network to the server at 10.0.0.1, with the ACL applied inbound on the router's GigabitEthernet0/0 interface, and then verify the configuration.
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
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then exit and verify with 'show access-lists'.
First, enter config mode. Create the ACL permitting HTTP from the source network to the destination host. Apply it inbound on the correct interface. Then exit and verify.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then exit and verify with 'show access-lists'.
Why this is correct
This sequence correctly enters configuration mode, creates an extended ACL (number 100) that permits HTTP (TCP port 80, 'www') from the source network to the destination host, applies it inbound on the correct interface, and verifies with 'show access-lists'.
Related concept
Authentication checks who the user is.
- ✗
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it outbound on GigabitEthernet0/0 with 'ip access-group 100 out', then exit and verify with 'show access-lists'.
Why it's wrong here
This is incorrect because the ACL is applied outbound, but the requirement specifies inbound on the interface. Applying outbound would filter traffic leaving the interface, not entering it.
- ✗
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then verify with 'show running-config' without exiting configuration mode.
Why it's wrong here
This is incorrect because the steps omit exiting configuration mode before verification. While 'show running-config' can be run in config mode, the typical verification step is done in privileged EXEC mode after exiting. More importantly, the order lacks a clear exit step, which is part of the standard workflow.
- ✗
Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then exit and verify with 'show ip interface brief'.
Why it's wrong here
This is incorrect because 'show ip interface brief' displays interface IP addresses and status, not ACL configuration. The correct verification command for ACLs is 'show access-lists' or 'show running-config | include access-list'.
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.
✓Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then exit and verify with 'show access-lists'.Correct answer▾
Why this is correct
This sequence correctly enters configuration mode, creates an extended ACL (number 100) that permits HTTP (TCP port 80, 'www') from the source network to the destination host, applies it inbound on the correct interface, and verifies with 'show access-lists'.
✗Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it outbound on GigabitEthernet0/0 with 'ip access-group 100 out', then exit and verify with 'show access-lists'.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: The ACL direction is outbound instead of inbound.
Why candidates choose this
Candidates might confuse inbound and outbound directions, especially if they think of traffic flowing from the source network to the server as 'outbound' from the router.
✗Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then verify with 'show running-config' without exiting configuration mode.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: The verification is performed while still in configuration mode, which is not the standard practice; also, the exit step is missing.
Why candidates choose this
Candidates might think that 'show running-config' can be used in any mode, but the question expects a specific order that includes exiting configuration mode before verification.
✗Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then exit and verify with 'show ip interface brief'.Wrong answer — click to see why▾
Why this is wrong here
The specific factual error: The verification command 'show ip interface brief' does not show ACL details.
Why candidates choose this
Candidates might confuse 'show ip interface brief' with 'show access-lists' because both are common show commands, but they serve different purposes.
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: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Trap categories for this question
Command / output trap
This is incorrect because the steps omit exiting configuration mode before verification. While 'show running-config' can be run in config mode, the typical verification step is done in privileged EXEC mode after exiting. More importantly, the order lacks a clear exit step, which is part of the standard workflow.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 200-301 questions on access control and AAA configuration.
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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 — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Enter global configuration mode, create the ACL with 'access-list 100 permit tcp 192.168.1.0 0.0.0.255 host 10.0.0.1 eq www', apply it inbound on GigabitEthernet0/0 with 'ip access-group 100 in', then exit and verify with 'show access-lists'. — First, enter config mode. Create the ACL permitting HTTP from the source network to the destination host. Apply it inbound on the correct interface. Then exit and verify.
What should I do if I get this 200-301 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 200-301 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on 200-301
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which of the following sequences correctly orders the steps to plan, configure, and apply an extended ACL that permits HTTP traffic from the 192.168.1.0/24 subnet to the server at 10.0.0.1, and deny all other IP traffic, applied inbound on interface GigabitEthernet0/1?
medium- ✓ A.Enter global configuration mode, create ACL with permit statement for HTTP from 192.168.1.0/24 to 10.0.0.1, add deny ip any any, enter interface configuration mode for GigabitEthernet0/1, apply ACL inbound.
- B.Enter interface configuration mode, apply ACL inbound, then create ACL with permit statement, add deny ip any any, exit to global config.
- C.Enter global configuration mode, create ACL with deny ip any any first, then permit statement for HTTP, enter interface, apply ACL inbound.
- D.Enter global configuration mode, create ACL with permit statement for HTTP, add deny ip any any, apply ACL outbound on interface GigabitEthernet0/1.
Why A: First enter global config, then create ACL with permit statement, then deny all, then enter interface, then apply ACL inbound.
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Last reviewed: Jun 6, 2026
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