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A business invests in SDN and develops its own SDN controller that, due to budget constraints, runs on a single controller. The controller actively places an exclusive lock on the configuration of the devices to ensure it is the only source of changes to the environment. What is the result if the controller fails?
Company XYZ wants to implement an IPS device to detect and block well-known attacks against their network They want a design solution where all packets that are forwarded to the network are checked against a signature database before being allowed through This check must be done with the minimum effect on performance. Which design is recommended?
Your network operations team is deploying Access Control Lists (ACLs) across your Internet gateways They wish to place an ACL inbound on the Internet gateway interface facing the core network (the "trusted" interface). Which IP address would the ACL need for traffic sourced from the inside interface, to match the source address of the traffic?
A customer migrates from a traditional Layer 2 data center network into a new SDN-based spine-and-leaf VXLAN data center within the same location Its applications cannot be readdressed and the customer does not want to perform the migration in a single operation How should the legacy network and new network be connected?
Which extensions to GRE tunneling provide session tracking and in-order packet delivery in exchange for additional state stored in tunnel endpoints?
