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, an EPG is configured with a contract that provides a service to another EPG. The contract has a filter for TCP port 80. Which component defines the directionality of the communication between the provider and consumer EPG?
The filter direction specified in the contract
Why wrong: Filter direction is not used; contract direction is provider/consumer.
The BD subnets
Why wrong: BD defines Layer 2 boundary, not contract direction.
The provider and consumer labels in the contract
Correct: provider/consumer relationship defines direction.
The subject of the contract
Why wrong: Subject contains filters and actions, not directionality.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The provider and consumer labels in the contract
In ACI contracts, the provider EPG offers the service and the consumer EPG initiates the communication. The contract is applied in the provider to consumer direction; return traffic is implicitly allowed.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The filter direction specified in the contract
Why it's wrong here
Filter direction is not used; contract direction is provider/consumer.
The BD subnets
Why it's wrong here
BD defines Layer 2 boundary, not contract direction.
The provider and consumer labels in the contract
Why this is correct
Correct: provider/consumer relationship defines direction.
Related concept
CIDR notation defines the prefix length.
The subject of the contract
Why it's wrong here
Subject contains filters and actions, not directionality.
Common exam traps
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related 350-601 subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
CIDR notation defines the prefix length.
The correct answer is: The provider and consumer labels in the contract — In ACI contracts, the provider EPG offers the service and the consumer EPG initiates the communication. The contract is applied in the provider to consumer direction; return traffic is implicitly allowed.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related 350-601 subnetting questions on CIDR, address ranges, and subnet selection.
CIDR notation defines the prefix length.
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Last reviewed: Jul 4, 2026
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