Should be Authentication headers and encapsulation security payload (CD)
https://sdwan-docs.cisco.com/Product_Documentation/Software_Features/Release_18.4/Security/01Security_Overview/Data_Plane_Security_Overview
Two mechanisms used to guarantee the integrity of data packets in the Cisco SD-WAN architecture data plane are encryption and authentication.
Answer should C and D
ntegrity—To guarantee that data traffic is transmitted across the network without being tampered with, the data plane implements several mechanisms from the IPsec security protocol suite:
A modified version of the ESP protocol encapsulates the payload of data packets.
The modified version of ESP uses an AH-like mechanism to check the integrity of the outer IP and UDP headers. You can configure the integrity methods supported on each router, and this information is exchanged in the router's TLOC properties. If two peers advertise different authentication types, they negotiate the type to use, choosing the strongest method.
i would take the answer as correct
i think C and D are correct https://www.cisco.com/c/dam/en/us/td/docs/routers/sdwan/configuration/config-18-4.pdf#page=242 beside TLOC (transport location) in son related with integrity
A number of components contribute to the integrity of data packets in the Viptela data plane:
• ESP, which is the standard IPsec encryption protocol, protects (via encryption and authentication) the inner header, data packet payload,
and ESP trailer in all data packets.
• AH, which is the standard IPsec authentication protocol, protects (via authentication) the entire data packet, including the inner and
outer headers, data packet payload, and ESP trailer
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