南理工分布式系统复习题1

1.(21 pts) Please expand the following abbreviated words. 0'd@8]|H  
  RPC   TCP/IP DCE RMI IDL UDDI SOAP ^X&`YXjuN  
^x&x|ckR!  
2.(28 pts) Please give your explanations for the problems. )FwOg;=3M"  
(1)    What are the transparencies of a distributed system? w5z]=dN  
(2)    What are the RPC stubs’ jobs? ])?dqgwa  
(3)    Why is important the load balancing for a distributed system? #m|el@)  
(4)    What are the differences among agent, broker and proxy?  DAq H  
(5)    What are the ACID features on the distributed transaction? ++~ G\T9H  
(6)    How many consistencies are there in data-centric consistency models? dFg&|Lp  
(7)    What’s the ‘happen-before’ relation?