南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. Q|)>9m !tt  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP G^Gs/- f  
r)|~Rs!y,  
2.(28 pts) Please give your explanations for the problems. uU 7 <8G  
(1)    What are the transparencies of a distributed system? w<H Xe  
(2)    What are the RPC stubs’ jobs? BsFO]F5mmX  
(3)    Why is important the load balancing for a distributed system? ?1ey$SSU]  
(4)    What are the differences among agent, broker and proxy? *W8n8qG%T  
(5)    What are the ACID features on the distributed transaction? 5}G_2<G  
(6)    How many consistencies are there in data-centric consistency models? TAUl{??,  
(7)    What’s the ‘happen-before’ relation?