350-601 Security Practice Question
In an ACI fabric, a security policy requires that traffic from EPG1 to EPG2 be denied, but all other inter-EPG traffic is permitted by default. Which type of contract should be used?
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
✓
Taboo contract
Taboo contracts are used to explicitly deny traffic between EPGs, overriding the default permit of a contract? Actually, by default, no traffic is permitted between EPGs unless a contract is applied. A taboo contract denies traffic, even if a regular contract exists? In ACI, the default is no communication; contracts permit traffic. To deny specific traffic, you use a taboo contract that explicitly denies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Taboo contract
Why this is correct
Taboo contracts explicitly deny specified traffic between EPGs.
- ✗
No contract
Why it's wrong here
Without a contract, no traffic is permitted; but the requirement is to deny specifically, not to block all.
- ✗
Regular contract with a deny filter
Why it's wrong here
Regular contracts only permit traffic; they cannot deny.
- ✗
Intra-EPG contract
Why it's wrong here
Intra-EPG contracts are for traffic within the same EPG.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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