单项选择题

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单项选择题
A virtual memory system has five virtual pages numbered zero through four and three page frames. All the page frames are initially empty. How many page faults are generated with the following access sequence using a FIFO replacement policy0 1 2 3 0 1 4 0 1 2 3 4
A.8
B.9
C.10
D.11
单项选择题
ORACLE数据库管理系统是
A.网状型的
B.层次型的
C.关系型的
D.面向对象型的
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