JN0-280 Fabric Practice Questions
The free JN0-280: Data Center Associate (JNCIA-DC) questions that deal with fabric, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #3
What are two requirements for an IP fabric? (Choose two.)
Select 2 answers.
Correct answer: A, B
Explanation
AnIP fabricis a network architecture commonly used in data centers to provide scalable, high-throughput connectivity using aspine-leaf topology. Step-by-Step Breakdown: Layer 3 Routing Protocol:An IP fabric relies on aLayer 3 routing protocol, typically BGP or OSPF, to provide routing between the leaf and spine switches. This ensures efficient traffic forwarding across the network. Single Connection Between Spine and Leaf:In an IP fabric, each leaf switch connects toevery spine switchwith a single connection. This ensures that traffic between any two leaf switches can travel through the spine layer in just two hops. Juniper Reference: Spine-Leaf Design: Juniper's IP fabric implementations are designed for scalability and low-latency routing, often using protocols like BGP for Layer 3 control.
Question #10
What are two reasons why you would deploy an IP fabric instead of a traditional Layer 2 network in a data center? (Choose two.)
Select 2 answers.
Correct answer: C, D
Explanation
Layer 3 IP fabrics use ECMP to load-balance traffic across multiple equal paths, and they avoid the loops that Layer 2 networks are prone to without STP. Layer 2 networks support multiple broadcast domains via VLANs, and IP fabrics are built for large scale.
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