COMPUTER SCIENCE

wshuyuanUID: 2106969

请教.  这题怎么做,考的是什么.

In the Internet Protocol (IP) suite of protocols, which of the following best
describes the purpose of the Address Resolution Protocol?
(A) To translate Web addresses to host names
(B) To determine the IP address of a given host name
(C) To determine the hardware address of a given host name
(D) To determine the hardware address of a given IP address
(E) To determine the appropriate route for a datagram

17. A certain pipelined RISC machine has 8 general-purpose registers R0, R1, . . . , R7 and supports the following operations.
  ADD Rs1, Rs2, Rd    Add Rs1 to Rs2 and put the sum in Rd
  MUL Rs1, Rs2, Rd    Multiply Rs1 by Rs2 and put the product in Rd
An operation normally takes one cycle; however, an operation takes two cycles if itproduces a result required by the immediately following operation in an operation
sequence. Consider the expression AB+ ABC+ BC,where variables A, B, C are
located in registers R0, R1, R2. If the contents of these three registers must not
be modified, what is the minimum number of clock cycles required for an operation sequence that computes the value of AB+ ABC+ BC ?
(A) 5 (B) 6 (C) 7 (D) 8 (E) 9

maverick2005UID: 2104907

第一个选(D) 考的是Network Protocol
第二个选(B) 考的是流水
这两个题Practice Book都有答案

wshuyuanUID: 2106969

考的是网络的内容吗,哪本教材里有? 谢谢.
我毕业有几年了,是不是以前的书和现在的不一样.

maverick2005UID: 2104907

这都是比较基本的问题，以前的书可以用，不过计算机发展很快，个人感觉除了一些理论和数学方面的新书旧书都行，像网络、软件、操作系统等还是用新教材更好。

wshuyuanUID: 2106969

我的操作系统书是西安电子科技大学99年版汤子赢的.
网络书得买一本了,你的是那里的.

blg_rachelUID: 201960

第1题考的是网络，ARP协议，将IP地址转换为MAC地址
第2题考的是系统结构，我还没学