第12题: [单项选择]Questions 21-25 Choose the correct letter, A, B or C.Why did Anita and Lee choose to talk about John Chapman A. He was Lee’s childhood hero. B. B. They wanted to talk about the US C. He was relevant to the topic of their studies. 参考答案:C 答案解析:[解析] 21-25 Tutor: Well, Anita and Lee. That was an interesting presentation you made about John C
第34题: [单项选择]假设保护方式下Pentium微处理器请求的特权级RPL=01,并且从局部描述符中寻址5号描述符,则此时的段选择子应该是( )。 A. 0052H B. 0029H C. 002CH D. 0025H 参考答案:B 答案解析:请求的特权级RPL=01,也就是段选择子的最低两位为01;从局部描述符中寻址,因此TI=1;寻址的是5号描述符,所以索引的13位应该是0000000000101,因此最后段选择子是0000000000