3.4 Describe the Purpose of Software-Defined Wide Area Networking (SD-WAN) Solutions CYBERSECURITY-PRACTITIONER Practice Questions (Page 3)

Questions 11–15

1. 11expert · hard

   A multinational corporation is evaluating SD-WAN to replace its legacy MPLS network. The company has 100 branches worldwide, each with a different mix of MPLS, broadband, and LTE links. The CFO wants to reduce WAN costs, but the CISO is concerned about security and compliance with data residency regulations. The network team wants to ensure that critical applications like VoIP and ERP get priority. Which SD-WAN approach best balances these competing requirements?

   • ADeploy SD-WAN with application-aware routing and centralized policy management, using a mix of MPLS and broadband links.
   • BReplace all MPLS with broadband and rely on SD-WAN encryption for security and compliance.
   • CKeep MPLS for all traffic to ensure maximum security and compliance, and accept the higher cost.
   • DUse SD-WAN only for cloud traffic and keep the traditional WAN for all other traffic.
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A fast-food chain with 500 locations wants to deploy SD-WAN to improve the reliability of its point-of-sale (POS) system. Each location has a broadband internet connection and a 4G LTE backup link. The chain wants to ensure that POS transactions are never interrupted, even if the broadband link fails. Which SD-WAN feature is most important for this requirement?

   • AWAN optimization to reduce the amount of data sent by the POS system.
   • BEncryption of all POS traffic to protect customer data.
   • CAutomatic failover to the LTE link when the broadband connection is lost.
   • DCentralized policy management to configure POS traffic prioritization.
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   A retail chain with 200 stores is replacing its hub-and-spoke MPLS network with an SD-WAN solution. The network team wants to centrally manage routing policies and push configuration changes to all branch devices from a single console. Which architectural component of SD-WAN provides this centralized management capability?

   • AThe overlay network that creates secure tunnels between branch sites.
   • BThe branch edge device that terminates the WAN connections and applies local forwarding decisions.
   • CThe SD-WAN controller or orchestrator that manages policies and distributes them to edge devices.
   • DThe underlay network that provides the physical transport links between sites.
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   What is an overlay network in the context of SD-WAN?

   • AA virtual network built on top of the underlying physical transport
   • BA physical network that connects all branch offices with dedicated cables
   • CA backup network that is only used when the primary fails
   • DA separate network used only for management traffic
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6. 15application · medium

   A hospital network currently uses a traditional WAN with MPLS circuits to connect its clinics. The IT director wants to improve network agility so that new clinics can be brought online quickly without waiting for new MPLS circuit installations. The director also wants to reduce the operational overhead of manually configuring each router. What is the most significant advantage of SD-WAN over the traditional WAN in this scenario?

   • ACentralized policy management that allows zero-touch provisioning of new branch devices.
   • BSimplified hardware, as SD-WAN requires only a single device at each site with no configuration.
   • CGuaranteed bandwidth on every link, ensuring consistent performance for all applications.
   • DComplete replacement of MPLS, eliminating the need for any private WAN connections.
   Reveal Solution Discussion Select an answer first