CRB Versus ERB JN0-460 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A campus fabric is being deployed with a mix of east-west and north-south traffic. The network team wants to ensure that north-south traffic to the internet is as fast as possible. Which architecture should they choose?

   • ABoth CRB and ERB provide the same performance for north-south traffic because the path to the internet gateway is the same.
   • BERB, because it routes at the leaf, which provides a direct path to the internet gateway.
   • CCRB, because it routes at the spine, which provides a direct path to the internet gateway.
   • DCRB, because it reduces the number of hops for north-south traffic by routing at the leaf.
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2. 7foundation · easy

   In a Centrally Routed Bridging (CRB) architecture, where is the routing function typically implemented?

   • AOn a dedicated firewall appliance
   • BOn the spine switches
   • COn a centralized external router
   • DOn every access switch
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4. 8application · medium

   A university campus has a leaf-spine fabric with 40 leaf devices. The network team is deploying a new research building where most traffic is between servers in the same building and a few applications that require access to a central data center. The team wants to minimize latency for inter-server traffic. Which architecture should they choose?

   • ACRB, because routing is centralized at the spine, which reduces the number of routing hops for inter-server traffic.
   • BERB, because it centralizes routing at the spine, which improves throughput for inter-server traffic.
   • CERB, because routing is performed at the leaf layer, allowing inter-server traffic to be routed locally without traversing the spine.
   • DCRB, because it provides a single routing point, which simplifies troubleshooting and reduces the need for routing protocols on leaves.
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5. 9expert · hard

   A network architect is designing a campus fabric for a large organization with 300 leaf devices. The organization has a mix of east-west and north-south traffic, but the majority is north-south to a central data center. The architect is concerned about the scalability of the routing table on the spine and the convergence time in case of a link failure. Which architecture should they choose?

   • ACRB, because it reduces the routing table size on the leaves, which improves convergence time.
   • BERB, because it distributes routing to the leaves, which reduces the routing table size on the spine and improves convergence time.
   • CERB, because it reduces the routing table size on the leaves, which improves convergence time.
   • DCRB, because it centralizes routing at the spine, which simplifies leaf configuration and reduces the routing table size on the spine.
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6. 10foundation · easy

   What is a traffic flow implication of Centrally Routed Bridging (CRB) for inter-subnet communication?

   • ATraffic must traverse the spine to be routed.
   • BTraffic is routed locally on the leaf without spine involvement.
   • CTraffic is bridged directly between leaves without spine involvement.
   • DTraffic is sent to a central firewall for routing.
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