Archive for the ‘Internet’ Category
准备 ccnp642-892
Posted on
October 11th, 2007 by
Keith
No Comments
于9月15号通过了cisco的ccna考试,事实证明现在cisco证书的含金量已经全不如当年,同去的一个女孩子全然不懂英文,硬生生把所有要考的题目的答案给背了下来,考试的时候看完题目直接勾选答案,考的分数比我还多,这些考生基本上属于没事凑热闹类型的。有朋友问我既然这样为什么还要去考这么个东西,其实我只是想做个职业生涯的总结,如此而已。
早上7点钟的时候一车人从杭州文三路的数码广场出发,浩浩荡荡直奔上海,事后我想起来这件事有点搞笑,这怎么有点像古代的进京赶考一样,只是把毛驴换成了面包车而已。
要想通过ccnp考试,必须通过四门课程,其实这些在ccna里面多有提及,只是涉及的知识面并不广泛,在ccnp里面进行了延伸,可以分四次或者三次考试来完成ccnp认证:
CCNP Exams & Recommended Training
642-901 BSCI Building Scalable Cisco Internetworks (BSCI)
642-812 BCMSN Building Cisco Multilayer Switched Networks (BCMSN)
642-825 ISCW Implementing Secure Converged Wide Area Networks (ISCW)
642-845 ONT Optimizing Converged Cisco Networks (ONT)
OR
Building Scalable Cisco Internetworks (BSCI)
Building Cisco Multilayer Switched Networks (BCMSN)
642-825 ISCW Implementing Secure Converged Wide Area Networks (ISCW)
642-845 ONT Optimizing Converged Cisco Networks (ONT)
其中642-892包含了BSCI和BCMSN两方面的内容,放在一起考试难度还是有的,剩下的时间就是准备银子死磕ccnp,回想起来我已经数年没有参加过任何类型的考试了:
Implement EIGRP operations
- Explain the functions and operations of EIGRP (e.g., DUAL)
- Configure EIGRP routing. (e.g., Stub Routing, authentication, etc.)
- Verify or troubleshoot EIGRP routing configurations
Implement multi-area OSPF operations
- Explain the functions and operations of multiarea OSPF
- Configure multiarea OSPF routing. (e.g., Stub, NSSA, authentication, etc.)
- Verify or troubleshoot multiarea OSPF routing configurations
Describe integrated IS-IS
- Describe the features and benefits of integrated IS-IS
- Configure and verify integrated IS-IS
Implement Cisco IOS routing features
- Describe, configure or verify route redistribution between IP routing IGPs. (e.g., route-maps, default routes, etc.)
- Describe, configure or verify route filtering (i.e., distribute-lists and passive interfaces)
- Describe and configure DHCP services (e.g., Server, Client, IP helper address, etc.)
Implement BGP for enterprise ISP connectivity
- Describe the functions and operations of BGP
- Configure or verify BGP operation in a non-transit AS (e.g., authentication)
- Configure BGP path selection. (i.e., Local Preference, AS Path, Weight or MED attributes)
Implement multicast forwarding
- Describe IP Multicast (e.g., Layer-3 to Layer-2 mapping, IGMP, etc.)
- Describe, configure, or verify IP multicast routing (i.e., PIM Sparse-Dense Mode)
Implement IPv6
- Describe IPv6 addressing operations
- Describe IPv6 interoperation with IPv4
- Describe, configure or verify OSPF routing with IPv6 addressing
Implement VLANs
- Explain the functions of VLANs in a hierarchical network
- Configure VLANs (e.g., Native, Default, Static and Access)
- Explain and configure VLAN trunking (i.e., IEEE 802.1Q and ISL)
- Explain and configure VTP
- Verify or troubleshoot VLAN configurations
Conduct the operation of Spanning Tree protocols in a hierarchical network
- Explain the functions and operations of the Spanning Tree protocols (i.e., RSTP, PVRST, MISTP)
- Configure RSTP (PVRST) and MISTP
- ” Describe and configure STP security mechanisms (i.e., BPDU Guard, BPDU Filtering, Root Guard)
- Configure and Verify UDLD and Loop Guard
- Verify or troubleshoot Spanning Tree protocol operations
- Configure and verify link aggregation using PAgP or LACP
Implement Inter-VLAN routing
- Explain and configure Inter-VLAN routing (i.e., SVI and routed ports)
- Explain and enable CEF operation
- Verify or troubleshoot InterVLAN routing configurations
Implement gateway redundancy technologies
- Explain the functions and operations of gateway redundancy protocols (i.e., HSRP, VRRP, and GLBP)
- Configure HSRP, VRRP, and GLBP
- Verify High Availability configurations
Describe and configure wireless client access
- Describe the components and operations of WLAN topologies (i.e., AP and Bridge)
- Describe the features of Client Devices, Network Unification, and Mobility Platforms (i.e., CCX, LWAPP)
- Configure a wireless client (i.e., ADU)
Describe and configure security features in a switched network
- Describe common Layer 2 network attacks (e.g., MAC Flooding, Rogue Devices, VLAN Hopping, DHCP Spoofing, etc.)
- Explain and configure Port Security,802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI
- Verify Catalyst switch (IOS-based) security configurations (i.e., Port Security, 802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI)
Configure support for voice
- Describe the characteristics of voice in the campus network
- Describe the functions of Voice VLANs and trust boundaries
- Configure and verify basic IP Phone support (i.e. Voice VLAN, Trust and CoS options, AutoQoS for voice)
创想王国NOVOKing初体验
Posted on
October 11th, 2007 by
Keith
No Comments
在我的记忆中,从1998年开始接触有生以来的第一个游戏超级玛丽,那是在Dos下启动的游戏,忘记了那时候学校机房的机器运行的是win95还是win98,平常学习的时候还主要是在Dos下面,主流机器是486微机,上面有3.5英寸的大盘,谁要是一不小心进入了win95的视窗那可是不平常的事情,一定会被奉为高手,那时候进入win95也是在Dos下面的命令行进去的,对我印象最深的微软“蓝天白云”时代说起来离现在也不过十年的时间。
在1999年的时候开始玩红色警戒,在红警里面不同国家的军队实力是不一样的,杀伤力也不一样,有红警高手硬是把中国送上了帝国的位置,有此能力者也会被奉为神人,但是我没有怎么玩过,1.5元钱每小时的上机费对我来说可不是小数目,再加上对游戏竞技类的东西天生不敏感,因此玩过超级玛丽之后基本上对游戏就再也没有接触过。
2001年开始玩QQ,后来才开始玩QQ游戏,QQ象棋玩得最多,由于用了好几年的QQ也累积了好几个太阳,现在想起来一年前把QQ废了挺可惜的,不过实在受不了上面吵吵嚷嚷的氛围,至此,基本上与游戏绝缘。
与传奇,大话西游,魔兽世界,征途擦肩之后现在开始流行虚拟人生有戏,SecondLife,HIPIHI,NOVOKing相继进入人们的视线,就目前的情况看流行肯定还谈不上,至少在我的周围还没有人玩这些游戏,在这样的虚拟社会里你基本上可以做现实的人类社会的一切活动,炒股,玩房地产,结婚(不知道能不能生小孩),当然这些都是虚拟的,至于虚拟人生类游戏能否像传奇那样迎来游戏世界的又一个热潮还有待时间的检验。
两个月前申请了创想王国的测试申请,前天收到创想王国团队的测试激活码,虽然我不怎么玩游戏,但是对于国内这样一个默默做着与SecondLife同样事情的团队还是从精神上给予很大的支持,于是就试着玩了一下:
硬件环境:
Samsung X06 Notebook
cpu: Intel Centrino 1.7G
Ram: 1024M
Harddisk: 60G Samsung
网络环境:
10M Fiber
相比于SecondLife 34M大小的客户端NOVOKing 则显得很大,有350M之多,从官方下载的客户端安装出错,从17173上面重新下了一个才正确安装完毕。
玩的过程相对比较痛苦,最主要的原因就是画面迟顿,可能与网速和机器配置都有关系,另外游戏界面没有帮助选项,一开始根本不知道基本的步行,跳跃是哪几个键,我感觉这是首先需要改正的地方。
或许我需要再认真玩一下才能在画质,内容设计,引擎方面给予更多的评价。
Creative Commons
Posted on
August 22nd, 2007 by
Keith
No Comments
魏容容(Candywei),生于1980年8月5日,在美国北卡洛来纳州她母亲任教的杜克大学所在的城市达拉谟长大,从小喜爱画画与写作,15岁时患上严重的先天性精神分裂症,休学一年,病后倾力于写作与艺术创作,并自创了一本文学与社会评论的杂志YTEICOS(society的倒写),19岁时进入位于安娜堡的密歇根大学就读,2000年大二时精神分裂症复发,返家治疗几个月后回校就读,2001年在宿舍自杀. 她的母亲将其全部作品采用CC协议“署名-非商业性使用-相同方式共享”发布,让世人分享容容遗留的诗词绘画.
CC(Creative Commons)于2001年由法学家劳伦斯-莱斯格(Lawrence Lessig)创立并发布最初版本,最早在2003年由毛向辉(Issac Mao)介绍入中国,其后中国人民大学的王春燕博士加入进来并负责CC协议在中国的推广,中间经历了创作共享-创作共用-知识共享的名称的转变.
作为一种版权的约束和发布方式,CC协议在中国Blogger界保护知识产权方面应用得很是广泛,但是效果并不尽如人意,从某种程度上讲CC协议变成了一种形式上的约束.再者,商业与非商业的界限有时候也并不是那么明显,Ok,我引用了你的文章,也署名了,应该是遵守CC协议了吧,但是你的网站有Google Adsense吗? 你通过它盈利了吗?所以,关于CC的定义仍是在不断的完善中.
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