[原创]请教几道tk问题？

ccrchina · 发表于 2005-9-27 01:24:24

1.       The Testking network consists of Cisco routers and switches as shown below:<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p><IMG src="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355NcafoT5ka6grvF9OrgIs1mRp_YBMZikRqRs6AYmnmaYRKAN1bGIlYLv5TsoqDm_LVHQ3xNuYeeSLvG6maPbW6gqvuKtwvbPesIiDyjn0RnNA"></o:p><o:p></o:p>Your goal is to prevent Telnet traffic originating from the Graphics Department to<o:p></o:p>reach the Web server attached to TestKing3. However, you want to allow Telnet<o:p></o:p>traffic to other destinations. To accomplish this, you configure the following access<o:p></o:p>control list:<o:p></o:p>access-list 101 deny tcp any any eq 23<o:p></o:p>permit ip any any<o:p></o:p>On which router, in what direction, and which interface, should the access list be<o:p></o:p>placed to most efficiently implement the above list? (Select three options)<o:p></o:p>A. TestKing1<o:p></o:p>B. TestKing2<o:p></o:p>C. serial 0<o:p></o:p>D. ethernet 0<o:p></o:p>E. in<o:p></o:p>F. out<o:p></o:p>Answer: A, D, E<o:p></o:p>为什么不能选c? 这题的题目我想应该是出错了。要求不允许Graphics Department 访问Web server ，但是又要求能够访问到其他的网络比如说是 HR Server，如果访问控制列表101应用在TK1上，那么所有的23端口将被拒绝，如果在TK2上，又不符合题意。题意应该是指定一源IP，目的IP，应用的正确位置是应是在TK3上。例：access-list 101 deny tcp 192.168.16.0 0.0.0.255 192.168.18.0 0.0.0.255 eq 23   TK3     interface   e0               ip access-group  101 out 2The internetwork infrastructure of TestKing consists of a single OSPF area as<o:p></o:p>shown in the graphic. There is concern that a lack of router resources is impeding<o:p></o:p>internetwork performance. As part of examining the router resources, the OSPF<o:p></o:p>DRs need to be known. All the router OSPF priorities are ad the default and the<o:p></o:p>router IDs are shown with each router.<o:p><IMG src="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355NMhq-BUxn47In2RYlAEbxosgARIY6ivKYF33VSAk7CL4K0UZVgcjwS7eGlRf1r7ZoHdiXdAMEKzalmDgnSlFLhdz0IIHUUbf5SpE3FIGOGRw"></o:p>Which routers are likely to have been elected as DR? (Choose two)<o:p></o:p>A. Testking-1<o:p></o:p>B. Testking-2<o:p></o:p>C. Testking-3<o:p></o:p>D. Testking-4<o:p></o:p>E. Branch-1<o:p></o:p>F. Branch-2<o:p></o:p>Answer: D, F<o:p></o:p>为什么选de，不是在一个area里面只能有一DR吗？ DR的作用就是负责接收与发送LSA给区域的其他路由器，题中的拓扑是会可能产生的多个DR。路由器TK1-4，接在同一个交换机中，也就是说在同一个以太网内，这时就需要选择DR，根据DR的选举规则，TK4的IP最高，自然成为这四个路由器的DR。拓扑中下半部分，TK3,BRANCH 1 2 在一个以太网内，所以它们也需要选举一个DR。我个人理解DR的选举也是一种相对的，楼主如果有做过帧中继的NBMA实验，相信也会见到另外一种多种DR并存的现象，实际上这是错误的，此话不多说了，这是INTERNET-BOOTCAMP的内容之一。 <o:p></o:p>3<A href="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355NJ7aELmU1yaK862z-uhCI4aBfH51VWsL3NRahuVddZUsMi5AzgGa9LzhAeVq85D8PjoJdoCtExIlBa1N-utynnND-d2lvU5cgeJ0wQ5e-iiw"><IMG src="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355NJ7aELmU1yaK862z-uhCI4aBfH51VWsL3NRahuVddZUsMi5AzgGa9LzhAeVq85D8PjoJdoCtExIlBa1N-utynnND-d2lvU5cgeJ0wQ5e-iiw"></A>修正的答案是PAR----THREE-WAY----windows----ports。我想请问一下选择前两个选项的原因？ 看不清楚，不好意思！这些在NA的课本中应该都有提到过！ <o:p></o:p>4operating in the exhibited switch topology?<o:p><IMG src="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355PD7CWcaeHHabDlNWODVk4u2uSsIniZ3Jgb97d4BSDuulrvLZJSOIlTlypfTbfUqvzZ0RsxXSESFjre6OxZG_ZpAmLyXTTS4sPA7qJim0bJnA"></o:p>A. To elect a particular switch as backup designated switch.<o:p></o:p>B. To have one active Layer 2 path through the switches network.<o:p></o:p>C. To select the best path to a remote destination that is on a different network.<o:p></o:p>D. To learn the MAC addresses of host attached to the switches network.<o:p></o:p>E. To distribute VLAN configuration information throughout the switched network.<o:p></o:p>Answer: B<o:p></o:p>请解释一 下为什么选B? 你的题目没帖完整吧？但我猜题意是问STP的作用是吗？就是为了防止拓扑会出现的环路问题，二层只有一条路径是活动的。 <o:p></o:p>5<IMG src="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355N91l7SD5ebauqAeCFW-_ajjfP2RZozA-pngqyErY1sNyRaKbWXBMXBpPM7TlihqNH2npzPt8RtDw198LM7OnR6JmGNTdZea2iDo_8UNdK7gw">Refer to the exhibit. Which ports could safely be configured with PortPast? (Choose<o:p></o:p>two)<o:p></o:p>A. SwitchTK1 – port Fa1/2<o:p></o:p>B. SwitchTK2 – port Fa1/2<o:p></o:p>C. SwitchTK1 – port Fa1/3<o:p></o:p>D. SwitchTK2 – port Fa1/3<o:p></o:p>E. SwitchTK1 – port Fa1/1<o:p></o:p>Answer: C, D<o:p></o:p>为什么CD？ 将SWITCH的端口设置为spanning-tree portfast后，如果这个端口接到其他SWITCH或者HUB上就可能造成环路问题。加上spanning-tree bpduguard enable之后，当这个端口在收到BPDU包后就会进入errdisable状态，从而避免环路。PORTFAST最好用在连接PC的端口上！！ <o:p></o:p>6<IMG src="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355NK8zf6CBZGT2b6qpkOsn4JhDcsTnsSJ-KSxCdL_GK6RitI4GjB9Irxb29MPe1J0gxHemVaIGspwKJP-9ymGJJXgWlCHJJVrbP-IocdeuhxWQ">答案是。NVRAM — FLASH ---- TFTP –--- ROM.为什么这样选阿。路由器的启动顺序不是1。ROM 2.TFTP 3. FLASH 3.NVRAM 5.RAM吗？ 是你说的那样。答案的顺序反了。 <o:p></o:p>7<IMG src="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355Nf5aaPwB8a8hAyzOqGDdAmfzltaQIxsz8Wqd67isW6IbNfTQ5QMJKk42bwkxNggsoSYoOjrweNhMdkigQtc_Aox7h_J8m69STjVokrXZ872g">答案是B还是D? B，很明显，FA0/9被划分到VLAN86中去了，从而脱离了管理VLAN1。<A href="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355MhH4vISWxI6PJujloIAgOi3fvjVt8JH637wKQ3RXvqEs0OtojfUwbWk5aCAUxurvfSLjjQYUs9D1ojB8WuR2Rt8xyZl1uyfJJBOlmTpW8Tfg"></A> 8<IMG src="http://storage.msn.com/x1pAdjo0uCo2H3xkqz8PZRv5eoL4bhoNK2_Jl2ZpIt355MhH4vISWxI6PJujloIAgOi3fvjVt8JH637wKQ3RXvqEs0OtojfUwbWk5aCAUxurvfSLjjQYUs9D1ojB8WuR2Rt8xyZl1uyfJJBOlmTpW8Tfg">请问选哪项?  ［此帖子已被 rainypan 在 2005-9-28 21:40:27 编辑过］

ccrchina · 发表于 2005-9-27 18:16:48

怎么没有人啊。

ccrchina · 发表于 2005-9-29 01:31:08

第8题是选acf对吗？

hkony · 发表于 2005-10-8 23:49:55

同意楼上的答案<OL><LI><DIV align=justify>service config </DIV></LI><LI>在全局设置模式下，设置路由器从tftp服务器中下载私有配置文件 </LI></OL>

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[讨论/求助] [原创]请教几道tk问题？