350-601 Network Practice Question
In ACI, which object defines the logical separation of traffic within a tenant, analogous to a VLAN in traditional networking, and is associated with a VRF?
⚠ Common exam trap
Cisco often tests the distinction between EPG and Bridge Domain, trapping candidates who confuse the EPG's policy-group role with the BD's Layer 2 segmentation function.
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
✓
Bridge Domain
In Cisco ACI, a Bridge Domain (BD) defines the Layer 2 boundary and provides logical separation of traffic within a tenant, analogous to a VLAN in traditional networking. Each BD is associated with a VRF (Layer 3 context) to enable IP forwarding, and it encapsulates traffic using VXLAN (VNID) rather than 802.1Q VLAN tags.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
VRF
Why it's wrong here
VRF provides L3 separation, not L2.
- ✗
Application Profile
Why it's wrong here
Application Profile contains EPGs, not L2 separation.
- ✗
EPG
Why it's wrong here
EPG is a group of endpoints, not L2 domain.
- ✓
Bridge Domain
Why this is correct
BD defines L2 domain, analogous to VLAN.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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