3.1 Resilient, Scalable, and Secure Modular Networks, Covering Traditional and Software-Defined Architectures, Considering: 400-007 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   During a network refresh, the design team plans to first deploy new equipment in a lab, then pilot in a single branch, and finally roll out to all branches. What is the primary purpose of this phased approach?

   • ATo increase network speed
   • BTo meet compliance requirements
   • CTo reduce hardware costs
   • DTo minimize disruption and validate each stage
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A multinational corporation is redesigning its network to support a new cloud-based ERP system. The company has strict data residency requirements, requiring that all customer data remain within the country of origin. The network team must ensure that traffic between branches and the cloud does not traverse international links. Which design approach should be recommended?

   • ADeploy local internet breakouts at each branch and use direct peering to the cloud provider's regional endpoints.
   • BUse a VPN tunnel from each branch to the cloud provider's nearest point of presence, regardless of country.
   • CBackhaul all branch traffic to the headquarters data center and then connect to the cloud via a single dedicated link.
   • DUse a single cloud region in a neighboring country to reduce latency for all branches.
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   An online gaming company is designing a network for a new game that requires very low latency and high availability. The game servers are distributed across multiple data centers, and players connect from around the world. The company has a budget for network improvements but wants to minimize costs. Which design approach best meets the application requirements?

   • AUse a single data center with a high-capacity internet connection to serve all players.
   • BUse a single data center but implement WAN optimization to reduce latency.
   • CDeploy game servers in multiple data centers and use global load balancing to direct players to the nearest server.
   • DUse a CDN to cache game content and reduce latency for downloads, but keep the game servers in one location.
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A university is upgrading its campus network from a traditional spanning-tree-based design to a routed access architecture using VXLAN. The upgrade must be completed over the summer break with minimal disruption to ongoing research projects. The network team is small and has no prior VXLAN experience. Which implementation plan is most appropriate?

   • AMigrate one building at a time, starting with low-risk areas, and validate each migration before moving to the next.
   • BReplace all access switches at once during the break, using a parallel network for research traffic.
   • CDeploy VXLAN in the core first, then migrate access switches in a single weekend.
   • DUse automation to configure all switches simultaneously, relying on automated validation scripts.
   Reveal Solution Discussion Select an answer first
6. 20application · medium

   A telecommunications company is migrating its core network from MPLS to Segment Routing. The migration must be completed without any downtime, and the company has a low risk tolerance. The current network uses a full mesh of MPLS LSPs. Which migration strategy is most appropriate?

   • AUse a network simulation tool to test the migration before implementing it.
   • BEnable Segment Routing on all routers simultaneously and remove MPLS LSPs.
   • CDeploy Segment Routing in parallel with MPLS, using a migration tool to gradually shift traffic.
   • DMigrate the core routers first, then the edge routers, and finally the services.
   Reveal Solution Discussion Select an answer first