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发表于 2008-4-1 11:03
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[学习资料] Cisco 640-802v13++题库祥解15[艾迪飞双CCIE黄老师主讲]
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 14.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">48. How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt"><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">from preventing routing updates? <o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt"><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">A. Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface.<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt"><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">B. Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt"><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 13.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">C. Configure many sub-interfaces on the same subnet.<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt"><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">D. Configure a single sub-interface to establish multiple PVC connections to multiple remote router interfaces.<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; mso-font-kerning: 0pt"><o:p><FONT face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">Answer: A</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman"></FONT></SPAN> </P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">解释:在frame-relay里面运行路由协议通常会出现两个问题,一个是frame-relay是NBMA网络,不支持广播和组播</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman"> 而基本上大部分的路由协议都是通过广播和组播来传递他们的更新报文,所以我们可以通过在映射后面加</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman"> 上broadcast参数来解决这个问题,通过反向ARP自动构建的MAP也会自动带上broadcast的参数,第二个问题</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman"> 是水平分割的问题,而这个问题则是通过划分frame-relay点到点的子接口来解决.所以答案是A</FONT></SPAN></P><SPAN lang=EN-US style="FONT-SIZE: 11pt; COLOR: black; mso-font-kerning: 0pt"><FONT face="Times New Roman">
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 23.3pt; LINE-HEIGHT: 12.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>本帖隐藏的内容需要回复才可以浏览 </SPAN></P> |
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