南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. Wrmgu}q  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP a9[mZVMgUK  
vqq6B/r@Fu  
2.(28 pts) Please give your explanations for the problems. JC=dYP}  
(1)    What are the transparencies of a distributed system? b-PSm=`  
(2)    What are the RPC stubs’ jobs? }@d>,1DU  
(3)    Why is important the load balancing for a distributed system? wGg0hL  
(4)    What are the differences among agent, broker and proxy? ^6Yd}  
(5)    What are the ACID features on the distributed transaction? ^^%JoQ.  
(6)    How many consistencies are there in data-centric consistency models?  R.K?  
(7)    What’s the ‘happen-before’ relation?