TK195页，23题，怎么理解
<P>The “show version” command was issued on a Testking router as shown below:</P><P><BR>The Network administrator at TestKing.com wants to upgrade the IOS of this<BR>router. The new Image requires 64 MB of RAM & 16 MB for Storage of the File.<BR>Given the Output Shown in the Graphic, which of the following is true?<BR>A. This router meets the requirements for the new image.<BR>B. This router will require a DRAM upgrade to meet the requirements for the Image.<BR>C. This router will require a FLASH upgrade to meet the requirements for the Image.<BR>D. This router will require a NVRAM upgrade to meet the requirements for the Image.<BR>Answer: B</P><P> </P><P>能解释一下题目的意思吗？？</P><P>DRAM是什么意思？？？？？</P><P> </P> <P>这是考察路由器的构造和IOS的一些常识，DRAM指内存，可拔插可增减，要跟IOS需求挂钩，由于IOS的解压及running－config就在内存中，所以内存有时要求很大。FLASH指闪存，主要用来放IOS，也要根据IOS的大小来决定能否装得下。而NVRAM是固化在路由器上的用于保存start－config，不可变，因此升级跟它无关。</P><P>The new Image requires 64 MB of RAM & 16 MB for Storage of the File。这是新IOS的需求：64M DRAM 16M FLASH</P><P>通过show version可以看到当前的内存及闪存大小，就可以选出这道题了！</P><P>这个在生活中的升级也是这样，还得注意路由器型号是否支持新版IOS！</P> <IMG src="http://www.spoto.net/bbs/images/Emotions/2.gif">明白了，太感谢了，<STRONG>andersen的解释总是详细到位</STRONG> <P>是啊，有同感</P><P>SPOTO的各位老师越来越敬业了<IMG src="http://www.spoto.net/bbs/images/Emotions/28.gif"></P>
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