南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. O/eZ1YAC  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP _`gF%
$]b  
ij]UAJ}t  
2.(28 pts) Please give your explanations for the problems. ]*NYuEgc  
(1)    What are the transparencies of a distributed system? H:~bWd'iz  
(2)    What are the RPC stubs’ jobs? (H:c80/V  
(3)    Why is important the load balancing for a distributed system? ?q6#M&|j/I  
(4)    What are the differences among agent, broker and proxy? 8YZ9  
(5)    What are the ACID features on the distributed transaction? wai3g-`  
(6)    How many consistencies are there in data-centric consistency models? La6 9or   
(7)    What’s the ‘happen-before’ relation?