请教tk中的一些问题

ccrchina

<P>QUESTION NO: 16<BR>On the topic of OSPF routing; which of the following are the traits of an OSPF<BR>area? </P><P>A. Each OSPF area requires a loopback interface to be configured.<BR>B. Areas may be assigned any number from 0 to 65535.<BR>C. Area 0 is called the backbone area.<BR>D. OSPF networks do not require multiple areas.<BR>E. Multiple OSPF areas must connect to area 0.<BR>F. Single area OSPF networks must be configured in area 1.</P><P>修正后的答案是bcde,我想问一下d,e两个选项是否有矛盾呢,一个说不需要multiple areas.另一个却说multiple areas must connect to area0.到底哪一个对呢.</P><P><FONT color=#ff3300>AREA 0 是OSPF的骨干区域，所有区域必须连接到此区域上！但是OSPF协议并不需要多个区域才能运行，因为多个区域会影响路由的收敛时间和CPU占用的资源。D E 答案并没有互相矛盾，只是解释当一种情况出现时应该怎么做！就是多区域时必须都要连接到AREA 0。</FONT></P><P>QUESTION NO: 11<BR>Which of the following are correct regarding ISDN? (Select all that apply)<BR>A. Legacy DDR can use port information to define interesting traffic.<BR>B. Legacy DDR can configure multiple dialer configurations on the same interface.<BR>C. Legacy DDR can use ACLs to define interesting traffic.<BR>D. HDLC or PPP can be used to encapsulate ISDN D channel information.<BR>E. The BRI interfaces on ISDN routers with dialer profiles configured cannot belong<BR>to multiple dialer pools.<BR>F. Dialer profiles cannot use extended ACLs to define interesting traffic.<BR>Answer: A, B, C&nbsp;&nbsp; 但是修正后的答案是AC,请问b为什么不可以啊．</P><P><FONT color=#ff3300>B答案是正确的。一个接口当然可以支持多个DIALER。</FONT><BR></P><p>［此帖子已被 rainypan 在 2005-9-23 19:12:04 编辑过］

我要飞

<P>我也不知道也</P><P>老师快来回答一下<IMG src="http://www.spoto.net/bbs/images/Emotions/15.gif"></P>