Approaches to Communication During installing Os, Os designer must choose the exact set of procedures used to access protocols ° Two approaches New system calls on all conceptual operations Using convention 1O primitives but overload them CSIE NTUT TANANCSIE, NTUT, TAIWAN 12 Approaches to Communication • During installing OS, OS designer must choose the exact set of procedures used to access protocols • Two approaches – New system calls on all conceptual operations – Using convention I/O primitives but overload them