CRB Versus ERB JN0-460 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   In a campus fabric, which architecture typically provides lower latency for east-west traffic between hosts on different leaves?

   • ALatency depends only on the underlay, not the routing architecture.
   • BCentrally Routed Bridging (CRB)
   • CBoth have identical latency.
   • DEdge-Routed Bridging (ERB)
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2. 12application · medium

   A small campus with 10 leaf devices is deploying a fabric. The network team has limited experience with routing protocols and wants to minimize the complexity of the leaf configuration. Most traffic is north-south to the internet. Which architecture should they choose?

   • ACRB, because it requires routing protocols on the leaves, which is more complex but provides better performance.
   • BERB, because it centralizes routing at the spine, which reduces the need for routing protocols on the leaves.
   • CCRB, because leaves only need a default route to the spine, simplifying configuration.
   • DERB, because it simplifies leaf configuration by using static routes.
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4. 13expert · hard

   A network architect is designing a campus fabric for a large enterprise with 200 leaf devices. The architect is concerned about the scalability of the routing protocol and the convergence time in case of a link failure. The architect is also considering the operational complexity of managing routing protocols on the leaves. Which architecture should they choose to balance scalability and operational complexity?

   • AERB, because it centralizes routing at the spine, which reduces operational complexity but limits scalability.
   • BERB, because it distributes routing to the leaves, which improves scalability but increases operational complexity.
   • CCRB, because it centralizes routing at the spine, which reduces the number of routing devices and simplifies operations.
   • DCRB, because it distributes routing to the leaves, which improves scalability and reduces operational complexity.
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5. 14foundation · easy

   Which scenario is most appropriate for deploying Centrally Routed Bridging (CRB)?

   • AA large data center with heavy east-west traffic between servers.
   • BA campus network where most traffic is north-south to the internet and central services.
   • CA network with many leaf switches and a need to minimize spine routing table size.
   • DA network that requires low latency for inter-subnet traffic between leaves.
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6. 15application · medium

   A network architect is evaluating CRB and ERB for a campus fabric. The architect is concerned about the convergence time in the event of a spine failure. Which architecture is likely to have faster convergence for the affected traffic?

   • ABoth have the same convergence time because they use the same routing protocols.
   • BCRB, because the spine is the only routing point, so a failure is detected and rerouted quickly.
   • CERB, because routing is distributed, so a spine failure only affects traffic that needs to cross the spine, and local routing continues unaffected.
   • DCRB, because leaves do not participate in routing, so they do not need to converge.
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