The presentation problem Q:does perfect memory-to-memory copy solve "the communication problem"? A:not always! struct{ test.code a test.code a char code; test.x 00000001 int x; 00000011 test.x 00000011 test; 00000001 test.x=256; test.code='a' host 1 format host 2 format problem:different data format,storage conventions Network Management 9-20Network Management 9-20 The presentation problem Q: does perfect memory-to-memory copy solve “the communication problem”? A: not always! problem: different data format, storage conventions struct { char code; int x; } test; test.x = 256; test.code=‘a’ a 00000001 00000011 a 00000011 00000001 test.code test.x test.code test.x host 1 format host 2 format