问题 单项选择题

编号为0、1、1、3、…、15的16个处理器,采用单级互联网络连接。当互联函数为Cube3时,11号处理器连接到 (10) 号处理器上。若采用Shuffle互联函数,则11号处理器应连接到兰 (11) 号处理器上。

A.2

B.5

C.7

D.11

答案

参考答案:C

解析:

[分析]: 并行处理机互联有多种方法,在构成单级互联网络时可采用n个结点的立方体网络结构。在此立方体上的每一个顶点(即结点)代表一个处理器。在编号为0~15的16个处理器构成的立方体上,每一个处理器均可用四位二进制编码来表示。利用n个结点的一般互联函数为:
[*]
因为11号处理器的编码为1011,它只能与编码为0011号处理器相连接。因此,与该处理器相连接的可以是3(0011)号处理器。
如果采用Shuffle互联函数,则根据公式:
Shuffle(Pn-1Pn-2…P1P0)=Pn-2…P1P0Pn-1
因为11号处理器的编码为1011,则经过变换后为0111,即为7号。

口语交际,情景问答题
单项选择题

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。学科&网

Hundreds of people have formed impressions of you through that little device(装置) on your desk. And they’ve never actually   41   you. Everything they know about you   42   through this device, sometimes from hundreds of miles away.   43   they feel they can know you   44   from the sound of your voice. That’s how powerful the   45   is.

Powerful, yes, but not always   46  . For years I dealt with my travel agent only by phone. Rani, my faceless agent whom I’d never met   47  , got me rock-bottom prices on airfares, cars, and hotels. But her cold voice really   48   me. I sometimes wished to   49   another agent.

One morning, I had to   50   an immediate flight home for a family emergency. I ran into Rani’s office   51  . The woman sitting at the desk,   52   my madness, sympathetically jumped up. She gave me a   53   smile, nodded while listening patiently, and then printed out the   54   immediately. “What a wonderful lady!” I thought.

Rushing out   55   I called out over my shoulder, “By the way, what’s your name?” “I’m Rani,” she said. I turned around and saw a   56   woman with a big smile on her face waving to wish me a safe trip. I was   57  ! Why had I thought she was cold? Rani was, well, so   58  .

Sitting back in the car on the way to the airport, I figured it all out. Rani’s   59  ---her warm smile, her nods, her ‘I’m here for you’   60  ---were all silent signals that didn’t travel through wires.

55()

A.hopefully

B.disappointedly

C.gratefully

D.regretfully