- A
The 'ip access-group' command applies an ACL to an interface in a specified direction.
Correct because the command syntax is 'ip access-group {acl-name} {in|out}'.
- B
The 'ip access-group' command can be applied to both physical interfaces and SVIs.
Correct because it works on any Layer 3 interface, including SVIs.
- C
The 'ip access-group' command creates a new ACL if the named ACL does not exist.
Why wrong: Incorrect because the ACL must be created separately; the command only applies an existing ACL.
- D
The 'ip access-group' command can only filter traffic in the inbound direction.
Why wrong: Incorrect because it supports both 'in' and 'out' directions.
- E
The 'ip access-group' command is used to apply a CoPP policy to the control plane.
Why wrong: Incorrect because CoPP uses 'service-policy' under 'control-plane', not 'ip access-group'.
Quick Answer
The correct answer is that the ip access-group command can be applied to both physical interfaces and SVIs. This is because the command is used to bind an existing access control list to a Layer 3 interface in a specific direction—either inbound or outbound—and both routed physical ports and switched virtual interfaces operate at Layer 3, making them valid targets for ACL application. On the ENCOR 350-401 exam, this concept tests your understanding of where ACLs can be deployed in a network, often appearing in questions that try to trick you into thinking the command only applies to physical ports or that it creates the ACL itself. A common trap is confusing the ip access-group command with the ip access-list command, which actually defines the ACL entries. For a quick memory tip, remember that “group” applies an existing list to an interface, while “list” builds the rules—think of the group as the gatekeeper that needs a gate (the interface) to stand at.
350-401 ACLs and CoPP Practice Question
This 350-401 practice question tests your understanding of acls and copp. 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.
Which two statements about the 'ip access-group' command are true? (Choose two.)
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
The 'ip access-group' command applies an ACL to an interface in a specified direction.
The 'ip access-group' command is used to apply an ACL to an interface in a specific direction (in or out). It can be applied to both Layer 3 interfaces (routed ports) and SVIs. The ACL must already exist in the configuration. The command does not create the ACL; it only applies it. The 'in' direction filters traffic entering the interface, and 'out' filters traffic leaving.
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.
- ✓
The 'ip access-group' command applies an ACL to an interface in a specified direction.
Why this is correct
Correct because the command syntax is 'ip access-group {acl-name} {in|out}'.
Related concept
Standard ACLs match source addresses.
- ✓
The 'ip access-group' command can be applied to both physical interfaces and SVIs.
Why this is correct
Correct because it works on any Layer 3 interface, including SVIs.
Related concept
Standard ACLs match source addresses.
- ✗
The 'ip access-group' command creates a new ACL if the named ACL does not exist.
Why it's wrong here
Incorrect because the ACL must be created separately; the command only applies an existing ACL.
- ✗
The 'ip access-group' command can only filter traffic in the inbound direction.
Why it's wrong here
Incorrect because it supports both 'in' and 'out' directions.
- ✗
The 'ip access-group' command is used to apply a CoPP policy to the control plane.
Why it's wrong here
Incorrect because CoPP uses 'service-policy' under 'control-plane', not 'ip access-group'.
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.
Trap categories for this question
Command / output trap
Incorrect because the ACL must be created separately; the command only applies an existing ACL.
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 350-401 ACL questions on filtering logic and placement.
- →
ACLs and CoPP — study guide chapter
Learn the concepts, then practise the questions
- →
ACLs and CoPP practice questions
Targeted practice on this topic area only
- →
All 350-401 questions
2,015 questions across all exam domains
- →
ENCOR 350-401 study guide
Full concept coverage aligned to exam objectives
- →
350-401 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related 350-401 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Architecture practice questions
Practise 350-401 questions linked to Architecture.
Enterprise Network Design practice questions
Practise 350-401 questions linked to Enterprise Network Design.
SD-Access Architecture practice questions
Practise 350-401 questions linked to SD-Access Architecture.
SD-WAN Architecture practice questions
Practise 350-401 questions linked to SD-WAN Architecture.
QoS Architecture practice questions
Practise 350-401 questions linked to QoS Architecture.
Virtualization practice questions
Practise 350-401 questions linked to Virtualization.
Network Function Virtualization practice questions
Practise 350-401 questions linked to Network Function Virtualization.
Virtual Machines and Hypervisors practice questions
Practise 350-401 questions linked to Virtual Machines and Hypervisors.
VRF and Path Isolation practice questions
Practise 350-401 questions linked to VRF and Path Isolation.
Infrastructure practice questions
Practise 350-401 questions linked to Infrastructure.
OSPF practice questions
Practise 350-401 questions linked to OSPF.
BGP practice questions
Practise 350-401 questions linked to BGP.
Practice this exam
Start a free 350-401 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 350-401 question test?
ACLs and CoPP — This question tests ACLs and CoPP — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The 'ip access-group' command applies an ACL to an interface in a specified direction. — The 'ip access-group' command is used to apply an ACL to an interface in a specific direction (in or out). It can be applied to both Layer 3 interfaces (routed ports) and SVIs. The ACL must already exist in the configuration. The command does not create the ACL; it only applies it. The 'in' direction filters traffic entering the interface, and 'out' filters traffic leaving.
What should I do if I get this 350-401 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 350-401 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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 18, 2026
This 350-401 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 350-401 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.