1.8 Explain the Process of Planning for Interconnectivity and High Availability (HA) SD-WAN-ENGINEER Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is the key difference between stateful and stateless failover in an HA configuration?

   • AStateful failover preserves session state, while stateless failover does not
   • BStateful failover is faster but less reliable than stateless failover
   • CStateful failover requires more WAN links than stateless failover
   • DStateless failover is only used in active/active mode
   Reveal Solution Discussion Select an answer first
2. 12expert · hard

   A retail company is planning SD-WAN for its stores. Each store has two WAN links: a DSL link and a 4G link. The company wants to ensure that if the DSL link fails, the store can still process credit card transactions, which require low latency. They also want to minimize cost. Which interconnectivity and HA design should they use?

   • AUse only the DSL link and rely on the ISP's SLA for uptime.
   • BUse both links in active/active mode for all traffic to maximize bandwidth.
   • CUse the DSL link as primary and the 4G link as backup, with automatic failover for all traffic.
   • DUse the 4G link as primary and the DSL link as backup, to ensure low latency.
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   A hospital is deploying SD-WAN for its clinics. The clinics use an electronic health record (EHR) system hosted in a data center. The network team is planning HA for the SD-WAN edge devices. They need to ensure that if the primary edge device fails, the backup takes over with minimal disruption. What is the most important factor to plan for?

   • APlacing the backup device in a different physical location to avoid power outages.
   • BEnsuring the backup device has a different software version to avoid bugs.
   • CSynchronizing the configuration and session state between the primary and backup devices.
   • DConfiguring the backup device with a different IP address than the primary.
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A multinational company is planning SD-WAN interconnectivity between sites in different countries. They have a mix of MPLS and internet links. The compliance team requires that traffic between certain sites remain within a specific country's borders. What should the interconnectivity plan include?

   • AUse local internet breakout for all traffic to avoid crossing borders.
   • BRoute all traffic through a central hub in a third country.
   • CDefine routing policies that force traffic between those sites to use MPLS links that stay within the country.
   • DUse the internet links for all traffic and rely on encryption to satisfy compliance.
   Reveal Solution Discussion Select an answer first
6. 15foundation · easy

   When planning interconnectivity for an SD-WAN site, which factor is most important when selecting WAN links?

   • AThe link's bandwidth, latency, and reliability relative to site requirements
   • BThe link's physical color and connector type
   • CThe link's ability to support legacy TDM circuits only
   • DThe link's compatibility with the local power grid
   Reveal Solution Discussion Select an answer first