[hga]

Errr, one of the points of my test is "do you grok pointers?" Which is an hard or impossible thing for many people and is needed in some subset of programming jobs.

But I'm sure many fewer today, note that I started out with punched card FORTRAN "IV" on an IBM 1130 and then did a lot of UNIX on PDP-11s. Fortunately I was able to play with LISP starting a couple of years after that first experience.

Today the world is almost entirely different, e.g. it's hard to buy a processor that had less L1 cache than the max address space of those machines' macroarchitecture.

ADDED: Or as I like to say, echoing someone I forget:

Cache is the new RAM.

RAM is the new disk.

Disk is the new tape.

(SSD does't neatly fit into that....)