南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. yA8e"$  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP A/XY'3  
9aED6  
2.(28 pts) Please give your explanations for the problems. u7_IO  
(1)    What are the transparencies of a distributed system? %nTgrgS(=  
(2)    What are the RPC stubs’ jobs? R. sRH/6  
(3)    Why is important the load balancing for a distributed system? K0|8h!WF+  
(4)    What are the differences among agent, broker and proxy? @WV}VKm  
(5)    What are the ACID features on the distributed transaction? "ooq1 0P  
(6)    How many consistencies are there in data-centric consistency models? 1@&i ju5  
(7)    What’s the ‘happen-before’ relation?