[原创]请教tk75的一些问题.

ccrchina

<P>看完tk75后有一些问题,请大家指教.</P><P>1QUESTION NO: 4<BR>A new switch is installed into an existing LAN and a new VTP trunk is set up with<BR>an existing switch. Which VLANs will be allowed on this new trunk?<BR>A. All defined VLANs are allowed on the trunk by default.<BR>B. Each VLAN, or VLAN range, that is specified with the switchport mode<BR>command.<BR>C. Each VLAN, or VLAN range, that is specified with the vtp domain command.<BR>D. Each VLAN, or VLAN range, that is specified with the vlan database command.</P><P>QUESTION NO: 21<BR>When a new trunk link is configured on an IOS based switch, which VLANs are<BR>allowed over the link?<BR>A. By default, all defined VLANs are allowed on the trunk.<BR>B. Each single VLAN, or VLAN range, must be specified with the switchport mode<BR>command.<BR>C. Each single VLAN, or VLAN range, must be specified with the vtp domain<BR>command.<BR>D. Each single VLAN, or VLAN range, must be specified with the vlan database<BR>command.</P><P>这两题的答案我觉的是c,a.但是修正的答案是a,a.请问为什么</P><P><FONT color=#ff0000>CISCO的IOS，划分了VLAN，在TRUNK LINK上是默认允许所有VLAN能够通过的，所以两题都是选A。</FONT></P><P>2Which of the conditions below have to be met in order for this to occur? (Choose all<BR>that apply).<BR>A. The switch that will share the VLAN information must be in the VTP Server<BR>mode.<BR>B. The switches must be in the same VTP domain.<BR>C. The switch that will share the VLAN information must be configured as the<BR>root bridge.<BR>D. The switches must be configured to use the same VTP version.<BR>E. The switches must be configured to use the same STP version.<BR>F. The switches must be configured to use the same type of ID tagging.</P><P>答案是bdf,请问为什么呢?</P><P><FONT color=#f73809>答案应该是ABD吧。首先肯定是要在相同的VTP域中，要能够共享VLAN的信息，必须是SERVER的模式，CLIENT只是将自己的VLAN信息告诉SERVER，由SERVER来将这些信息通告其他的交换机。而且在同一个域中的SW版本都是一样的。增加一个VLAN，版本就加上1。</FONT></P><P>3.路由器的启动顺序1.加载引导程序(rom) 2.定位和加载ios(首先在flash中找,,如果没有找到则在ftp中找,还是没有找到的话在rom中找)3.定位和加载配置文件或进入设置模式(顺序是nvram,tftp,)不知道我这样理解有没有错.</P><P>所以tk75,p202,Q13.路由器的启动顺序应该是1rom,2flash,2,nvram,3,tftp.但是和答案不一样,请问哪一个正确呢?</P><P><FONT color=#ff0000>路由器启动顺序：ROM&nbsp;&nbsp; TFTP&nbsp;&nbsp;&nbsp;FLASH&nbsp;&nbsp; NVRAM&nbsp;&nbsp; RAM</FONT></P><P>4.p231,NO13.为什么选c,serial0不可以啊.我觉的s0和e0没有什么区别啊.</P><P><FONT color=#f70909>你要把图跟问题帖上来！</FONT></P><P>5While troubleshooting a connectivity issue from a PC you obtain the following<BR>information:<BR>Local PC IP address: 190.0.3.35/24<BR>Default Gateway: 190.0.3.1<BR>Remote Server: 190.0.5.250/24<BR>You then conduct the following tests from the local PC:<BR>Ping 127.0.0.1 - Unsuccessful<BR>Ping 190.0.3.35 - Successful<BR>Ping 190.0.3.1 - Unsuccessful<BR>Ping 190.0.5.250 - Unsuccessful<BR>What is the underlying cause of this problem?<BR>A. TCP/IP not correctly installed<BR>B. Local physical layer problem</P><P>C. NIC not functioning<BR>D. Remote physical layer problem<BR>Answer: A<BR>127.0.0.1unsucessful应该是网卡的问题吧, 190.3.35unsuccessful才是tcp/ip not correctly installed.</P><P><FONT color=#f70909>127.0.0.1就是为了测试你的TCP/IP是否安装正常。</FONT></P><P>6QUESTION NO: 17<BR>Which of the following are actual varieties of network crosstalk? (Select all the valid<BR>answer choices)<BR>A. near-end crosstalk(NEXT)<BR>B. middle open-end crosstalk(MOEXT)<BR>C. power sum near-end crosstalk(PSNEXT)<BR>D. jitterry crosstalk(JEXT)<BR>E. far end crosstalk(FEXT)</P><P>请解释一下这些名词是什么意思啊.为什么选ace啊?</P><P>&nbsp;A&nbsp; 近端串扰，C&nbsp; 综合串扰&nbsp;， E&nbsp; 远端串扰。</P><p>［此帖子已被 rainypan 在 2005-9-20 17:28:45 编辑过］

ccrchina

&nbsp;谢谢潘老师的指导