老谢博客

预约下午两点考试，上午十一点就到了，一直等到下午两点。。。。

考前出了点小问题，不过麻烦很快就解决了，就算你不知道你的考好，考官在他们的系统也能查到

————————–我叫分割线—————————

考试前面是动画演示，和xixi的CCNA真实考试环境曝光里面的Flash完全一致

接着就是问卷调查，第一个选项问你如何学习，我选study-myself（貌似是这个）自学，剩下的大家根据自己实际情况填写吧，我记得有预计考试时间、学习了多久等等，然后问你是否满18，选择YES点NEXT，然后弹出cisco的协议，选择YES点NEXT即可开始考试

我一共抽取到53题，没有拖图题，实验题是三宝

我可能比较RP吧，第一题就遇到EIGRP，比较紧张。。但内容还是比较简单的，就是AS号和宣告的问题，在S口有个passive接口，我没管他，貌似这样是正确的，的确不需要管他

接着在32题遇到VTP，这个还是很容易的，理解VTP的原理就行，然后考前多用几遍那些show就可以

在50题的时候遇到ACL，要求是B允许访问财务服务器，其他所有流量拒绝访问财务服务器，允许其他所有流量，没有DNS服务器，这样写的

access-list 100 permit tcp host B host Finance eq 80
access-list 100 deny ip any host Finance
access-list 100 permit ip any any

还有连接公网的那个接口的IP错了，改过来就行，有个小插曲，我第一遍把财务服务器的IP写错了，no掉了access-list 100 重新写了一遍

选择题方面，多做题库就行，由于考试中心上几天中毒,没法考试，闲来无事，我一天做一遍题库，总计做了六七遍，所以一路绿灯，遇到一个新题，四台路由，如果当掉一个会怎么样，我选择水平分割和路由中毒，不知道对不对 – –

俩月的努力没白费，终于把念叨一年多的NA给PASS了，祝大家也早日PASS

2011-8-27 00:02

明天要考CCNA了 准备了俩月 不知道能不能顺利PASS

先预祝一下吧，哈哈，要自信呢

2011-8-26 下午2:00 开考

cost

a configurable value based by default on the bandwidth of the interfac

load

the amount of activity on a network resource

bandwidth

the data capacity of a link

hop count

the number of point-to-point links in a transmission path

reliablity

usually refers to the bit error rare of rach network link

delay

the amount of time required to move a packet from source to destination

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holddown time

prevents a router from improperly reinstating a route from a regular routing update

split horizon

prevents information about a route from being sent in the direction from which the route

defining a maximum

prevents invalid updates from lopping the internetwork indefinitrly

route poisoning

causes a routing protocol to advertsie an infinite metric for a failed route

triggered update

decreases convergence time by immdeiately sendingroute informations response to a topology change

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antispyware

detects software desinged to caputer sensitive information and removes it from the computer

antivirus

prevents known malicious programs from being installed on

workstations

IDS

identifies malicious network traffic and alerts network  personnel

firewall

filters traffic based on source and destination IP address or traffic type

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poison reverse

A router learns from its neighbor that route is down,and the router sends update back to the neighbor with an infinite metric to that route.

LSA

The packets flooded when a toplogy change occues,causing network routers to ipdate their topological database and recelculate routes

split horizon

This prevents sending infomation about a route back out the same interface that originally learned about the route.

holddwon timer

For given period,this cause the router to ignore any updates with poorer metrics to a lost network.

类似以下页面所示logo的风格：

http://www.ypson.com/app/portfolio/logo-design/

设计一旦采用，会给予一定的现金奖励 （不小于 200元人民币）

有意者发邮件到我的邮箱：i@xj123.info领取设计任务

设计任务已结束,感谢各位朋友