nsheridan
The lower-case headers is part of the http2 specification.
To me it falls into "something you know". You might not be able to type it from memory into a file but in practical terms it's no different to a password, it just usually happens to reside on disk.
Auth is handled in a browser e.g. by Google, and the CA will sign a key and return a cert with a valid token.
It’s often more advantageous for the company to have people with certs (it was with MCSE and such in the 90s anyway) - more MCSE etc on staff meant it was possible for the company to attain higher partnership levels with Microsoft which often meant more lucrative contracts and so on.
So while you may have been doing the same job as before, just by having the getting the certs you added more value to the business.
SLO - service level objective, the stated availability (or latency or durability etc) of the service. Usually expressed as a value over a period of time (e.g 99.9% availability as measured over a moving 30 average). The SLO is measured by the SLI.
SLI - service level indicator. Simply, the direct measurement of the service (i.e metrics)
SRE - Site Reliability Engineer, usually a member of a team who is responsible for the continued availability of the service and the poor sap who gets paged when it breaches SLO or has an outage or other impactful event.
Every host it's installed on has to be properly tuned. Fine for large setups where finely tuned TCP stacks are the norm and maintaining your own ssh isn't much overhead, probably not fine for most setups where the 2MB buffer does the job. "To compute the BDP, we need to know the speed of the slowest link in the path and the Round Trip Time (RTT)". Do you know the slowest link in the path for everything you want to conceivably connect to?
The patches were an exercise in trying to max out high bandwidth connections using scp under ideal lab conditions, nothing more.
Life is suddenly easier :)