The following questions from previous exams are not directly relevant,
or not good practice, for the Spring 2022 exam.  In most cases,
they refer to assignments or concepts that were covered in previous versions
of COS 217, but are not relevant any more.

F19:
  1    - parts that refer to signals, exceptions, processes, VM
  2b   - fork
  2d   - virtual memory
  2e   - heap management
  3    - signals, exceptions, processes

F20:
  no exclusions

F21:
  no exclusions
  
S20:
  no exclusions
  (this is a subset of the full exam with excluded items already removed)

S21:
  no exclusions