博文

CCNA 801 Certification Practice Exam #1(2007-09-23 18:43:00)

摘要: Take Assessment - CCNA 801 Certification Practice Exam #1 (上)- CCNA 4 WAN Technologies (Version 3.1) Time Remaining: 1 Which ISDN device can be directly connected to a two-wire local loop in a North American city? a router with a serial interface a router with an S/T interface a router with a U interface an ISDN terminal adapter *2 Which of the following commands will display a communication message on a router before the router prompt is shown? banner motd * Property of TLC. UNAUTHORIZED USERS WILL BE PROSECUTED TO THE FULL EXTENT OF THE LAW. * message Property of TLC. UNAUTHORIZED USERS WILL BE PROSECUTED TO THE FULL EXTENT OF THE LAW. banner * Property of TLC. UNAUTHORIZED USERS WILL BE PROSECUTED TO THE FULL EXTENT OF THE LAW. * hostname (Property of TLC. UNAUTHORIZED USERS WILL BE PROSECUTED TO THE FULL EXTENT OF THE LA......

阅读全文(16154) | 评论:3

美国硅谷百年纪实 [1891-1999](2007-09-21 22:19:00)

摘要:戈登·摩尔不仅提出摩尔定律,还创立了Intel公司去超越它,令人敬畏的创新速度,就像硅谷的激情,持续百年,成就了现今美国硅谷。远目它的百年历程,仿佛踏过一个又一个伟大技术在奔向未来,曾经那些单薄却激情奋发的公司,如今都已成为巨人,为世人所敬仰。 1891年  利兰·斯坦福夫妇在靠近帕洛·阿尔托(Palo Alto)的地方,创办了面积达8000英亩的——斯坦福大学。  1906年  李·德·福来斯特发明第一个三级真空管,使得第一台电脑的产生成为可能。  1924年  硅谷之父特曼担任斯坦福大学教授,对创建HP、成立斯坦福工业园区起到决定性作用。  1938年  William Hewlett和David Packard仅靠538美元贷款,在帕洛??阿尔托的一个车库里创建了HP(惠普)公司。  1944年  Ampex公司创立并开发了现代磁带式录音机,宾·克罗斯在人类历史上第一次用磁带进行录音。  1946年  SRI(斯坦福研究所)创立,发明了喷墨打印和光学磁盘记录设备。    1951年  斯坦福大学在帕洛·阿尔托建立斯坦福工业园,HP、Varian Associates都是最早进驻的公司。  1952年  IBM在圣何塞(San Jose)建立了IBM研究中心,设计出了第一个硬盘存储设备,并于三年后成立了通用产品部(后来命名为存储系统部),继续进行磁盘存储设备和磁带技术的开发。  1955年  威廉·肖克莱(William Shockley)建立了肖克莱半导体实验室,生产他新近发明的晶体管。   1957年  肖克莱实验室中8名平均年龄低于30岁的科学家创立了仙童半导体公司,其中罗伯特·诺伊斯(Robert Noyce)和德州仪器公司的杰克·基尔比(Jack Kilby)在两年后分别发明了集成电路。  1962年  罗斯·佩罗(Ross Perot)以1000美元创立了EDS,12年后,摆脱通用汽车掌握其所有权又一次成为独立的公司。  1964年  戈登·摩尔提出摩尔定律,预测在芯片上所能集成的晶体管数目将会每隔18个月翻一番,这一法则适用至今。  1966年  Coherent公司成立,日后成为科学、医疗和商业应用方面的领先激光制造商。  斯坦福线性加速公司(SLAC)成立,致力于研究亚原子微粒。  ......

阅读全文(1758) | 评论:0

Final Exam - CCNA 4(2007-09-21 21:03:00)

摘要: Take Assessment - Final Exam - CCNA 4 WAN Technologies (Version 3.1) Time Remaining: 1 Which IP addresses are defined by RFC 1918 as private addresses? (Choose three.) 172.55.16.0.16 172.17.0.0/16 224.200.175.0/24 192.168.168.0/22 10.88.179.0/29 17.250.0.0/16 2 Refer to the exhibit. The network administrator of the Denver router has determined that the DHCP clients on the network are not working properly. The clients are receiving IP configuration information from a DHCP server configured on the router but cannot access the Internet. From the output in the exhibit, what is the most likely problem? The DHCP server service is not enabled. The DHCP pool is not bound to the interface. The inside interface for DCHP is not defined. The pool does not have a default router defined for the clients. All the host address......

阅读全文(13342) | 评论:11

========水中雨========(2007-09-20 23:55:00)

摘要:                                  水中雨   喜欢低调的音乐,它让我流连。   当风划过新鲜的伤口,当雨浇开红色的花蕊,是否依然想问候,这雨季里那一粒粒用水滴串成的故事,虽然有断有续,但那是真实而感人的。    水漫起来,而我的脚停在水中,它淹过我的膝盖,我问水,你们是不是想把我的身体全部吞噬。水说,不,让人心酸的事我会做,比如让你留在水中不能上岸,奔跑甚至飞翔,但我不会让你停止呼吸,因为自然界很宽容,我是他的仆人,我应该给你宽容。后来,我把掌心在水面铺开,飞水成花,绽放了透明的心事,一滴汗水沿着脸荚落了下来,融入水,成了水的一部分,生活从此搀杂了一些另人心碎的故事在水中潮起潮落。     渐渐地,我喜欢在这样的水里,让膝盖饱饮清凉,也时常把手放在耳朵边,并捏住耳垂,温热手指。水中泛起微音许多,光影里飘飞音容,那是一曲曲调子低沉的音乐,象小马走路半颠半倒般徐徐靠近我的耳膜,那膜儿也因此浅浅的变化着。后来,我把手堵住耳朵,音符被限出来了,飞散到水面上化成绿色的细胞。过了不多会儿,他们纷纷在水面上长大,长成了一根根小草,一根又一根,鲜绿鲜绿的。水便成了透明的土壤,给生命以活跃的温度与营养,继续故事的发生与结果。     我闭目养神,许多日子过后,小草一根根离开水中,飘飞,于那蓝色的空中繁衍,渐渐地一个蓝绿交加的天宇在那些过去的音调里开始聚拢而来,变沉,变重,接着乌云幻化而出,世界又开始奏开滴滴嗒嗒的音乐,调子依然低沉。......

阅读全文(1425) | 评论:1

[TVB连续剧][舞动全城][20集全][国语/粵語中字][DVD-RMVB](2007-09-19 23:16:00)

摘要: 引用: ◎名  称 舞动全城◎国家地区 香港◎类  型 剧情◎出品公司 TVB ◎上映日期 2007年9月◎版  本   第6感海外华人论坛 引用:       李心盈醉心舞蹈,畢生理想是成為一個出色的舞蹈表演者。在一次嘉年華會中,心盈遇上了同樣熱愛舞蹈的狄寶寶及他的兒子程嘉俊。寶寶目睹心盈的表演,驚為天人,邀請心盈到自己的舞蹈坊教舞,但心盈已報考香港舞蹈團,所以婉拒了寶寶的好意。應考當日,心盈重遇遭到意外的嘉俊,為人熱心的心盈立刻上前幫忙,卻不小心弄傷了自己,結果在面試中大失水準。但心盈沒有自怨自艾,反而認為自己仍有進步的空間,決心要到外國繼續進修舞技。心盈與哥哥李力強相依為命,力強知道心盈想出國進修後即指自己早已儲了一筆錢,可給心盈作進修的費用。但心盈知道所住的單位仍未供斷,而力強暗戀同事游琳琳已有一段日子,這筆錢是他準備與琳琳結婚用的老婆本。心盈不想成為力強的負擔,於是到寶寶的舞蹈坊擔當教師,希望靠自己的力量賺取進修的費用。  嘉俊是力強的下屬,二人一起在喜洋洋飲品集團工作。公司成立已有數十年,主要售賣涼茶等傳統飲品,近年除了推出膠瓶裝飲品外,一直沒有求新,整間公司都洋溢著一種固守舊法的消極氣氛。在所有員工都習慣懶散度日的時候,公司卻突然變天,太子女楊詩曼突然接管了整間公司。詩曼為人積極進取,為了向父親證明自己的工作能力,甫入主即進行大肆改革。眾員工反對詩曼的改革,而國權更自命為長輩,以漢滔的理念為藉口, 阻撓詩曼的一切提議。寶寶建議心盈參加比賽,提升自己的眼界。在比賽過程中,嘉汶出盡法寶想令心盈出醜,但心盈卻樂觀積極地面對,表現得毫不介懷。喜洋洋飲品集團贊助了今次的舞蹈比賽,詩曼眼見心盈在比賽中受到嘉汶的攻擊卻不退縮,對她十分欣賞,二人惺惺相惜,成為好友。  嘉俊明白到自己過去的不是,開始作出改變。嘉俊從沒想過世上有如此積極樂觀、事事為人的女孩,更沒想過這樣的女孩會令自己也有所改變。嘉俊覺得心盈就是自己理想的伴侶,對心盈展開追求。漢滔及妻子突然回港,中止詩曼的所有職務,並停止所有正在進行的計劃。詩曼覺得自己是一個有實力有才華的人,可是父親卻把自己當成嬌嬌女,並不信任她有獨立的能力。詩曼氣憤不已,與漢滔陷入冷戰。詩曼在公司及感情上都不如意,大受打擊。一向單戀詩曼的上達於是在詩曼......

阅读全文(2593) | 评论:0

Module 6 Exam - CCNA 4(2007-09-19 21:27:00)

摘要: Take Assessment - Module 6 Exam - CCNA 4 WAN Technologies (Version 3.1) Time Remaining: 1 Which of the following are examples of network management applications? (Choose two.) Windows 2000 Professional Ciscoworks2000 HP Openview Red Hat Linux Cisco ConfigMaker 2 Which statements are true regarding configuring SNMP? (Choose three.) It is best to use the default read-only community strings in enterprise networks. It is not advisable to use the default read-write community string in an enterprise network. More than one read-only community string is supported. Authorized management stations can modify MIB objects with read-write access specified. The maximum number of read-write strings supported is one. 3 Which statements describe the Windows 2000 operating system family? (Choose three.) ......

阅读全文(6340) | 评论:4

Module 4 Exam - CCNA 4(2007-09-19 21:18:00)

摘要: Take Assessment - Module 4 Exam - CCNA 4 WAN Technologies (Version 3.1) Time Remaining: 1 Which of the following correctly describes ISDN BRI? (Choose three.) two 64 kbps B channels and one 16 kbps D channel B channel is suitable for voice data uses in-band signaling uses out-of-band signaling offers the equivalent of a T1/E1 connection twenty-three 64 kbps B channels and one 16 kbps D channel 2 A network administrator in Europe has been asked to provide the network with an ISDN WAN link. The router available to provide the WAN connection is a non-modular Cisco router with an S/T interface. What further equipment will be provided by the ISDN service provider for the ISDN connection? Nothing. The router is already suitable. BRI WAN interface card to install in the router an external NT1 to terminate the local loop a TA/......

阅读全文(12824) | 评论:2

Module 5 Exam - CCNA 4(2007-09-19 21:06:00)

摘要: Take Assessment - Module 5 Exam - CCNA 4 WAN Technologies (Version 3.1) Time Remaining: 1 A ping is sent to address 192.168.50.10 from the Peanut router. Which DLCI will be used to send the ping? 110 115 220 225 2 Which features make Frame Relay technology a cost-effective alternative to a mesh of dedicated leased lines? (Choose three.) allows a single interface to support multiple PVCs minimizes the equipment required to be purchased by the customer requires one router interface for each PVC provides the customer with redundancy if a single interface goes down allows the customer to pay for the average bandwidth requirement rather than the maximum bandwidth requirement 3 Which of the following allow the router to map data link layer addresses to network layer addresses in a Frame Relay network? ......

阅读全文(6068) | 评论:1

Module 2 Exam - CCNA 4(2007-09-19 19:22:00)

摘要: Take Assessment - Module 2 Exam - CCNA 4 WAN Technologies (Version 3.1) Time Remaining: 1 Why is it important to identify the type of traffic that will be carried on the WAN links before choosing a WAN technology? to determine the routing protocol to be used on the WAN link to determine the WAN topology to determine the requirements for latency and jitter to determine the type of signaling protocol to be used on the WAN link 2 A large company already has a T1 leased line but this connection is inadequate at peak business hours. Furthermore, they would like a backup WAN connection in case their leased line temporarily fails. What type of WAN connection is commonly used in this situation? X.25 DSL ISDN cable modem 56 kbps 3 A company requires a WAN connection that will carry 64 kbps and allow f......

阅读全文(7743) | 评论:1

Module 3 Exam - CCNA 4(2007-09-19 19:16:00)

摘要: Take Assessment - Module 3 Exam - CCNA 4 WAN Technologies (Version 3.1) Time Remaining: 1 A two router network is running PPP over the serial interfaces that connect them. The enable password on the Denim router is "gateway". The Denim router also has a locally configured authentication password for the Plaid router which is "fortress". Which command must be executed on the Plaid router to allow Denim to authenticate to the Plaid router using CHAP? Plaid(config)# enable secret gateway Plaid(config)# enable secret fortress Plaid(config)# username Plaid password fortress Plaid(config)# username Denim password fortress Plaid(config)# hostname Plaid secret password gateway Plaid(config)# hostname Plaid secret password fortress 2 How is the MD5 function valuable in authentication? (Choose two.) uses a one-way hash function authentica......

阅读全文(6789) | 评论:2