- A
Enter global configuration mode, create the ACL with a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the interface facing the 192.168.1.0/24 network, save the configuration, and verify with show access-lists.
This sequence correctly follows the standard workflow: enter config mode, define the ACL, apply it inbound on the interface closest to the source, save, and verify.
- B
Enter global configuration mode, create the ACL with a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it outbound on the interface facing the server, save the configuration, and verify with show ip interface.
Why wrong: This is incorrect because applying the ACL outbound on the interface facing the server is less efficient; inbound application on the source-facing interface is recommended to filter traffic early.
- C
Enter interface configuration mode, create the ACL with a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the same interface, save the configuration, and verify with show running-config.
Why wrong: This is incorrect because ACLs are created in global configuration mode, not interface configuration mode.
- D
Enter global configuration mode, create the ACL with a deny statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the interface facing the server, save the configuration, and verify with show access-lists.
Why wrong: This is incorrect because the ACL should permit HTTP traffic, not deny it, and the application should be inbound on the source-facing interface, not the server-facing interface.
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 only HTTP traffic from the 192.168.1.0/24 network to the server at 10.0.0.100, 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 a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the interface facing the 192.168.1.0/24 network, save the configuration, and verify with show access-lists.
First, enter config mode. Then create the ACL allowing HTTP from the source network to the destination host. Apply it inbound on the appropriate interface. Save and verify the configuration.
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 a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the interface facing the 192.168.1.0/24 network, save the configuration, and verify with show access-lists.
Why this is correct
This sequence correctly follows the standard workflow: enter config mode, define the ACL, apply it inbound on the interface closest to the source, save, and verify.
Related concept
Authentication checks who the user is.
- ✗
Enter global configuration mode, create the ACL with a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it outbound on the interface facing the server, save the configuration, and verify with show ip interface.
Why it's wrong here
This is incorrect because applying the ACL outbound on the interface facing the server is less efficient; inbound application on the source-facing interface is recommended to filter traffic early.
- ✗
Enter interface configuration mode, create the ACL with a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the same interface, save the configuration, and verify with show running-config.
Why it's wrong here
This is incorrect because ACLs are created in global configuration mode, not interface configuration mode.
- ✗
Enter global configuration mode, create the ACL with a deny statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the interface facing the server, save the configuration, and verify with show access-lists.
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 a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the interface facing the 192.168.1.0/24 network, save the configuration, and verify with show access-lists.Correct answer▾
Why this is correct
This sequence correctly follows the standard workflow: enter config mode, define the ACL, apply it inbound on the interface closest to the source, save, and verify.
✗Enter global configuration mode, create the ACL with a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it outbound on the interface facing the server, save the configuration, and verify with show ip interface.Wrong answer — click to see why▾
Why this is wrong here
The ACL should be applied inbound on the interface closest to the source, not outbound on the destination interface.
Why candidates choose this
Candidates may think outbound application is equivalent, but it wastes router resources by processing unwanted traffic through the router.
✗Enter interface configuration mode, create the ACL with a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the same interface, save the configuration, and verify with show running-config.Wrong answer — click to see why▾
Why this is wrong here
ACLs are defined globally and then applied to an interface; they cannot be created directly in interface configuration mode.
Why candidates choose this
Candidates might confuse the creation step with the application step, thinking both happen in interface mode.
✗Enter global configuration mode, create the ACL with a deny statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the interface facing the server, save the configuration, and verify with show access-lists.Wrong answer — click to see why▾
Why this is wrong here
The requirement is to permit HTTP traffic; a deny statement would block it. Also, the ACL should be applied inbound on the interface closest to the source.
Why candidates choose this
Candidates may misread the requirement or think deny is needed to block other traffic, but the ACL must explicitly permit the desired traffic.
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.
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.
- →
Network Services and Security — study guide chapter
Learn the concepts, then practise the questions
- →
Network Services and Security practice questions
Targeted practice on this topic area only
- →
All 200-301 questions
1,819 questions across all exam domains
- →
CCNA 200-301 v2 study guide
Full concept coverage aligned to exam objectives
- →
200-301 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related 200-301 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Network Infrastructure and Connectivity practice questions
Practise 200-301 questions linked to Network Infrastructure and Connectivity.
Switching and Network Access practice questions
Practise 200-301 questions linked to Switching and Network Access.
IP Routing practice questions
Practise 200-301 questions linked to IP Routing.
Network Services and Security practice questions
Practise 200-301 questions linked to Network Services and Security.
AI and Network Operations practice questions
Practise 200-301 questions linked to AI and Network Operations.
CCNA subnetting practice questions
Practise IPv4 subnetting, CIDR, masks, host ranges and subnet selection.
CCNA OSPF practice questions
Practise OSPF neighbours, router IDs, metrics, areas and routing-table interpretation.
CCNA VLAN practice questions
Practise VLANs, access ports, trunks, allowed VLANs and switching scenarios.
CCNA STP practice questions
Practise spanning tree, root bridge election, port roles and STP troubleshooting.
CCNA EtherChannel practice questions
Practise LACP, PAgP, port-channel behaviour and bundle requirements.
CCNA ACL practice questions
Practise standard and extended ACLs, permit/deny logic and traffic filtering.
CCNA NAT practice questions
Practise static NAT, dynamic NAT, PAT and inside/outside address translation.
Practice this exam
Start a free 200-301 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
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 a permit statement for HTTP from 192.168.1.0/24 to 10.0.0.100, apply it inbound on the interface facing the 192.168.1.0/24 network, save the configuration, and verify with show access-lists. — First, enter config mode. Then create the ACL allowing HTTP from the source network to the destination host. Apply it inbound on the appropriate interface. Save and verify the configuration.
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 →
Last reviewed: Jun 6, 2026
This 200-301 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 200-301 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.