南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. hZt!/?dc  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP 89(Q1R ?:  
aWF655Fs*  
2.(28 pts) Please give your explanations for the problems. *VxgARIL  
(1)    What are the transparencies of a distributed system? FJ)$f?=Qd  
(2)    What are the RPC stubs’ jobs? -m~#Bq  
(3)    Why is important the load balancing for a distributed system? oe-\ozJ0  
(4)    What are the differences among agent, broker and proxy? wNdisI  
(5)    What are the ACID features on the distributed transaction? \(2sW^fY  
(6)    How many consistencies are there in data-centric consistency models? .U]-j\  
(7)    What’s the ‘happen-before’ relation?