300-320 · Question #123
Which two statements about Layer 3 access designs are correct? (Choose two.)
The correct answer is A. IP address space is difficult to manage. E. Fast uplink convergence is supported for failover and fallback. A is correct: In a Layer 3 access design every access-layer switch is its own IP subnet boundary. This means each wiring closet or access block needs its own address range, making IP address planning and management significantly more complex than in a flat Layer 2 design. E is…
Question
Which two statements about Layer 3 access designs are correct? (Choose two.)
Options
- AIP address space is difficult to manage.
- BBroadcast and fault domains are increased.
- CConvergence time is fractionally slower than STP.
- DLimits on clustering and NIC teaming are removed.
- EFast uplink convergence is supported for failover and fallback.
How the community answered
(25 responses)- A84% (21)
- B8% (2)
- C4% (1)
- D4% (1)
Explanation
A is correct: In a Layer 3 access design every access-layer switch is its own IP subnet boundary. This means each wiring closet or access block needs its own address range, making IP address planning and management significantly more complex than in a flat Layer 2 design. E is correct: Because Layer 3 routing protocols (EIGRP, OSPF) converge faster than STP for uplink failures, fast uplink failover and fallback are supported natively. The other options are wrong: broadcast and fault domains are actually smaller (not larger) because each switch is its own subnet; convergence is faster than STP (not slower); and Layer 3 access can restrict clustering/NIC teaming because hosts in the same cluster may reside on different subnets.
Topics
Community Discussion
No community discussion yet for this question.