南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. @M!WosRk  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP c5f8pa *  
7ga|4j3%  
2.(28 pts) Please give your explanations for the problems. Sgy_?Y  
(1)    What are the transparencies of a distributed system? +_h1JE_}D  
(2)    What are the RPC stubs’ jobs? _xVtB1@kLM  
(3)    Why is important the load balancing for a distributed system? /Q8glLnM  
(4)    What are the differences among agent, broker and proxy? ` e~nn  
(5)    What are the ACID features on the distributed transaction? `NNr]__  
(6)    How many consistencies are there in data-centric consistency models? H*M)<"X  
(7)    What’s the ‘happen-before’ relation?