350-601 Practice Question: In an ACI fabric, a contract between two EPGs…
This 350-601 practice question tests your understanding of 350-601 exam topics. 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.
In an ACI fabric, a contract between two EPGs uses a filter that permits TCP port 443. The provider EPG is configured with a VMM domain integration. Which statement about the contract's effect is true?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Traffic from the provider EPG to the consumer EPG on TCP 443 is allowed.
Contracts in ACI allow the specified traffic direction from provider to consumer. The provider EPG is the one that offers the service. VMM integration allows EPGs to be mapped to VMware port groups.
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.
✗
Both directions are allowed for TCP 443.
Why it's wrong here
Contracts are unidirectional; return traffic is allowed implicitly if stateful.
✓
Traffic from the provider EPG to the consumer EPG on TCP 443 is allowed.
Why this is correct
Provider offers service; consumer accesses it, so traffic from provider to consumer is allowed.
Related concept
Standard ACLs match source addresses.
✗
Traffic from the consumer EPG to the provider EPG on TCP 443 is allowed.
Why it's wrong here
Contract direction is from provider to consumer; reverse requires explicit contract.
✗
The VMM domain overrides the contract and permits all traffic.
Why it's wrong here
VMM domain does not override contracts; it integrates EPGs with vSphere.
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 350-601 ACL questions on filtering logic and placement.
The correct answer is: Traffic from the provider EPG to the consumer EPG on TCP 443 is allowed. — Contracts in ACI allow the specified traffic direction from provider to consumer. The provider EPG is the one that offers the service. VMM integration allows EPGs to be mapped to VMware port groups.
What should I do if I get this 350-601 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 350-601 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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