南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. rcW#6VZ=  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP
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2.(28 pts) Please give your explanations for the problems. f`bIQ9R  
(1)    What are the transparencies of a distributed system? 0-lPhnrp  
(2)    What are the RPC stubs’ jobs? vLD:(qTi  
(3)    Why is important the load balancing for a distributed system? t2m
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(4)    What are the differences among agent, broker and proxy? ?WMi S]Q\  
(5)    What are the ACID features on the distributed transaction? O]4W|WI3  
(6)    How many consistencies are there in data-centric consistency models? U8U/?zW/&  
(7)    What’s the ‘happen-before’ relation?