南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. J[<:-$E  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP P [gqv3V  
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2.(28 pts) Please give your explanations for the problems. WAob"`8]  
(1)    What are the transparencies of a distributed system? !rwv~9I  
(2)    What are the RPC stubs’ jobs? & }}o9  
(3)    Why is important the load balancing for a distributed system? c"fnTJXr79  
(4)    What are the differences among agent, broker and proxy? _STN^   
(5)    What are the ACID features on the distributed transaction? *%Q!22?6F  
(6)    How many consistencies are there in data-centric consistency models? [S*bN!t  
(7)    What’s the ‘happen-before’ relation?