南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. $; ?c?n+  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP IXn
b]q.  
B`i$Wt<7  
2.(28 pts) Please give your explanations for the problems. {@3z\wMK$  
(1)    What are the transparencies of a distributed system? IroPx#s:i  
(2)    What are the RPC stubs’ jobs? Pb#P`L7OB  
(3)    Why is important the load balancing for a distributed system? I_ONbJ9]  
(4)    What are the differences among agent, broker and proxy? F% `zs\  
(5)    What are the ACID features on the distributed transaction? A_Rrcsl4  
(6)    How many consistencies are there in data-centric consistency models? "Ht'{&  
(7)    What’s the ‘happen-before’ relation?