Traditional Multitier Architectures JN0-281 Practice Questions (Page 4)

Questions 16–20

1. 16expert · hard

   A large enterprise is designing a new three-tier data center. The network team wants to minimize latency for traffic between two distribution blocks. They are considering placing a new service (a firewall cluster) at the core layer. What is the primary trade-off of this decision?

   • AIt simplifies the design by removing the need for an aggregation layer
   • BIt reduces the oversubscription ratio at the access layer
   • CIt adds stateful inspection latency to all inter-block traffic, potentially becoming a bottleneck
   • DIt improves east-west traffic flow by shortening the path between access switches
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A network engineer is designing a redundant core layer for a three-tier data center. They want to ensure that if one core switch fails, traffic is rerouted to the other core switch with minimal disruption. Which mechanism should be used?

   • AA static default route on the aggregation switches pointing to the core
   • BSpanning Tree Protocol (STP) on the core switches
   • CLink Aggregation Control Protocol (LACP) between the core switches
   • DA routing protocol like OSPF or BGP between the core and aggregation switches
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   In a traditional multitier architecture, what is the path of traffic from a server in the access layer to a server in a different access layer but in the same data center?

   • AAccess → Aggregation → Core → Aggregation → Access
   • BAccess → Core → Access
   • CAccess → Core → Aggregation → Access
   • DAccess → Aggregation → Access
   Reveal Solution Discussion Select an answer first
5. 19expert · hard

   A data center architect is comparing the traditional three-tier model with a spine-leaf model for a new virtualized environment. The environment will have significant east-west traffic between virtual machines. What is the primary architectural advantage of spine-leaf over three-tier for this workload?

   • ASpine-leaf eliminates the need for a core layer, reducing cost
   • BSpine-leaf provides a flatter topology with a consistent number of hops for any east-west flow
   • CSpine-leaf provides better oversubscription ratios than three-tier
   • DSpine-leaf allows for easier policy enforcement than three-tier
   Reveal Solution Discussion Select an answer first
6. 20application · medium

   A company is deploying a new three-tier data center. The access layer will consist of multiple switches. The network team wants to ensure that a failure of one access switch does not affect the entire network. What is the best way to achieve this?

   • AConnect all access switches in a single spanning tree domain
   • BPlace all access switches in a single broadcast domain
   • CUse a redundant design with dual-homed servers and dual uplinks from each access switch
   • DUse a single large access switch for all servers
   Reveal Solution Discussion Select an answer first