Why is SSL/TLS in Layer 6? It’s used in the Layer 5, and often argued Layer 4 (TLS/Transport Layer Security…). Layer 6 is for .jpg and the such for.. presenting data. I come from the cyber realm so that’s something that immediately stood out to me. Other than that, really enjoying the course so far.
Well, the people over at the Cisco forums tried answering this same question….without a solid conclusion. This seemed to be the most comprehensive answer: https://learningnetwork.cisco.com/message/566963#566963
Definitely not required to go into this sort of detail for the CSA-P exam…maybe for the Networking Speciality. Generally, Layer 6 is considered to be where encryption/decryption happens among other things and it is true that stuff above Layer 4 get murky and debate-able…like can TLS really be pigeonholed into a single layer of the OSI model.
AWS seems to like to think of SSL as on Layer 6…at least in the cases I’ve found:
So, as this is an AWS exam, we should probably go with AWS’s opinion. You’re free to have another opinion though for sure.