CRB Versus ERB JN0-460 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   In an Edge-Routed Bridging (ERB) architecture, where is the routing function typically implemented?

   • AOn a centralized router
   • BOn a firewall appliance
   • COn the leaf switches
   • DOn the spine switches
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2. 17foundation · easy

   In which architecture does the spine typically maintain a larger routing table?

   • ACentrally Routed Bridging (CRB)
   • BEdge-Routed Bridging (ERB)
   • CRouting table size is independent of the architecture.
   • DBoth have the same routing table size on the spine.
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4. 18application · medium

   A mid-sized company is deploying a campus fabric with 20 leaf devices. They have a mix of east-west traffic between servers in the same wiring closet and north-south traffic to the internet. They want to minimize the load on the spine and reduce latency for east-west traffic. Which architecture should they choose?

   • ACRB, because it centralizes routing at the spine, which reduces the load on the spine for east-west traffic.
   • BERB, because it routes east-west traffic locally at the leaf, reducing spine load and latency.
   • CCRB, because it provides a simpler design that is easier to manage and requires less configuration on the leaves.
   • DERB, because it centralizes routing at the spine, which reduces the number of routing hops for north-south traffic.
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5. 19foundation · easy

   A network administrator is designing a small campus fabric with a single pair of spine switches and a few leaf switches. They want to minimize the routing table size on the spines. Which architecture should they choose?

   • AEdge-Routed Bridging (ERB)
   • BThe routing table size on the spine is not a consideration in architecture selection.
   • CCentrally Routed Bridging (CRB)
   • DEither CRB or ERB would have the same routing table size on the spine.
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6. 20application · medium

   A campus fabric is being designed for a large enterprise with 200 leaf devices. The network team is concerned about the convergence time in case of a leaf failure. Which architecture is likely to have faster convergence for the affected traffic?

   • AERB, because the leaf failure only affects local routing, and other leaves can continue routing without interruption.
   • BCRB, because leaves do not participate in routing, so they do not need to converge.
   • CCRB, because the spine has a full routing table and can quickly reroute traffic around the failed leaf.
   • DBoth have the same convergence time because they use the same routing protocols.
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