南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. iw~V_y4  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP C#*
*)  
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2.(28 pts) Please give your explanations for the problems. CyK$XDHa  
(1)    What are the transparencies of a distributed system? VM\Z<}C  
(2)    What are the RPC stubs’ jobs? 4MtqQq4%  
(3)    Why is important the load balancing for a distributed system? 49J+&G?)j  
(4)    What are the differences among agent, broker and proxy? +U_-Lq )  
(5)    What are the ACID features on the distributed transaction? "$E!_  
(6)    How many consistencies are there in data-centric consistency models? Fzld0p9=  
(7)    What’s the ‘happen-before’ relation?