南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. L!If~6oD(  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP "a8E
0b
 
VIP7j(#t_g  
2.(28 pts) Please give your explanations for the problems. 0\= du  
(1)    What are the transparencies of a distributed system? rQ
VX^  
(2)    What are the RPC stubs’ jobs? M}V!;o<t^  
(3)    Why is important the load balancing for a distributed system? a,c!#iyl3  
(4)    What are the differences among agent, broker and proxy? "+ou!YK+  
(5)    What are the ACID features on the distributed transaction? Y#ZgrziYM  
(6)    How many consistencies are there in data-centric consistency models? GBbnR:hM  
(7)    What’s the ‘happen-before’ relation?