Discovery Channel's weekly series "Unsolved History" is one of the best among similar TV programs.

相似题目

• 在DISCOvery过程中ONU如果所收到的消息类型为DISCOvery，且消息中的逻辑PHYID与自己相同或为缺省值是，就不对此消息做出应答。

  A . 正确 B . 错误

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• Which multicast address is reserved for cisco-rp-discovery？（）

  A . 224.0.1.37 B . 224.0.1.38 C . 224.0.1.39 D . 224.0.1.40

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• 在dISCOvery过程中，OLT必须周期性的发送DISCOvery检测帧。

  A . 正确 B . 错误

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• 802.11MAC使用扫描功能来完成Discovery，通过侦听AP定期发送的Beacon帧发现网络。

  A . 正确 B . 错误

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• Which two statements are true about RPF checks in MSDP（Multicast Source Discovery Protocol）？（）

  A . It prevents message looping，Session Advertisement（SA）messages must be RPF checked B . RPF check should be done against the route to the Rendez-vous Point of the corresponding PIM-SM domain，which originated the SA C . RPF checking Session Advertisement（SA）messages will cause message looping D . RPF check should be done against the route to the source S of the corresponding PIM-SM domai

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• What is the purpose of the NBAR protocol discovery？（）

  A . to build a Packet Description Language Module （PDLM） file to be used in protocol matching B . to discover applications and build class maps for data classification C . to look into the TCP or UDP payload and classify packets based on the content D . to build a database of all application data that passes through the router and queue the data accordingly

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• What are two components of the discovery guide in the Cisco SBR sales approach?（）

  A . Calculate Business Need PriorityAnd Evolution Phase B . Prioritize and Prepare Solutions Recommendations C . Pain Point and Implementation Assessment D . Business Needs-based Solution Recommended

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• 在dISCOvery过程中，所有的“dISCOveryGATe”帧都是以广播方式发送的。

  A . 正确 B . 错误

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• 在（）时，ONU进入DISCOvery状态。等待来自OLT的“DISCOvery GATe”消息。

  A . 上电启动 B . 复位 C . 注册时 D . 刚进入正常运行状态

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• 在ONU注册认证时，ONU进入Discovery状态后，等待来自OLT的“Discovery Gate”消息。

  A . 正确 B . 错误

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• 发现（discovery）

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• What are two components of the Discovery Guide in the Cisco sales approach?（）

  A . calculating the customer's businessneed priorities B . recommending a business needs-based solution C . ranking customer business needs D . probing more deeply into the customer's business challenge

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• Discovery of mausoleum can reveal the history without written records. （         ）

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• The discovery shows that Westerners______.

  A．pay equal attention to eyes and mouth B．consider facial expressions universally reliable C．observe eyes and mouth in different ways D．have more difficulties in recognizing facial expressions

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• People there warmly ____ him on the discovery of oil（）

  A、congratulated B、bargained C、believed D、considered

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• Paragraph 3 shows that a discovery claim becomes credible after it______.

  A．has attracted the attention of the general public B．has been examined by the scientific community C．has received recognition from editors and reviewers D．has been frequently quoted by peer scientists

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• Glaser made his discovery by （）．

  A．studying patches of fertile soils in the central Amazon B．examining pottery left over by ancient civilizations C．test-burning patches of trees in the central Amazon D．radiocarbon-dating ingredients contained in forest soils

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• A scientific discovery is often made long before someone is able to put it to（).

  A．A.usage B．B.use C．C.broken up D．D.used

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• Which is NOT the newest discovery？

  A．Dietary fat turns to body fat more efficiently than does protein or carbohydrate. B．Disordered brain chemistry due to high levels of fat can not prevent us from eating. C．Diet rich in fat and fructose hampers the regulation of the hormones concerned. D．Fat and sugar are addictive like drugs. 此题为多项选择题。

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• According to reports in major news outlets, a study published last week included a startling discovery: the nation's Jewish population is in shrinking. The study, the National Jewish Population Survey, found 5.2 million Jews living in the United States in 2000, a drop of 5 percent, or 300,000 people, since a similar study in 1990. What's truly startling is that the reported decline is not tree. Worse still, the sponsor of the $6 million study, United Jewish Communities, knows it.

  Both it and the authors have openly admitted their doubts. They have acknowledged in interviews that the population totals for 2000 and 1990 were reached by different methods and are not directly comparable. The survey itself also cautions readers, in a dauntingly technical appendix, that judgment calls by the researchers may have led to an undercount. When the research director and project director were asked whether the data should be construed to indicate a declining Jewish population, they flatly answered no. In addition, other survey researchers interviewed pointed to other studies with population estimates as high as 6.7 million. Despite all this, the two figures --5.2 million now, 5.5 million then --are listed by side in the survey, leaving the impression that the population has shrunk. The result, predictably, has been a rash of headlines trumpeting the illusionary decline, in turn touching off jeremiads by rabbis and moralists condemning the religious laxity behind it. Whether out of ideology, ego, incompetence or a combination of all three, the respected charity has invented a crisis. United Jewish Communities is the coordinating body for a national network of Jewish philanthropies with combined budgets of $2 billion. Its population surveys carry huge weight in shaping community policy. This is not the first time the survey has set off a false alarm. The last one, conducted by a predecessor organization, found that 52 percent of American Jews who married between 1985 and 1990 did so outside the faith. That number was a fabrication produced by including marriages in which neither party was Jewish by anyone's definition, including the researchers. Its publication created a huge stir, inspiring anguished sermons, books and conferences. It put liberals on the defensive, emboldened conservatives who reject full integration into society and alienated ordinary folks by the increasingly xenophobic tone of Jewish communal culture. The new survey, to its credit, retracts that figure and offers the latest survey has spawned a panic created by the last one. So why did the organization flawed figures once again？ Some scholars who have studied the. survey believe the motivation then came partly out of a desire to shock straying Jews into greater observance. It' s too early to tell if that' s the case this time around. What is clear is the researchers did their job with little regard to how their data could be misconstrued. They used statistical models and question formats that, while internally sound, made the new survey incompatible with the previous one. For example, this time the researchers divided the population of 5.2 million into two groups--"highly involved" Jews and "people of Jewish background"- and posed most questions only to the first group. As a result, most findings about belief and observance refer only to a subgroup of American Jews, making comparisons to the past impossible. We can' t afford to wait a decade before these figures are revised. The false population decline must be corrected before it further sours communal discourse. The United Jewish Communities owes it to itself and its public to step forward and state plainly what it knows to be true: American Jews are not disappearing. According to the passage, which of the following statements is NOT true about the National Jewish Population Survey？ A．It found a decline of 300,000 Jews in ten years. B．It was carded out by United Jewish Communities. C．This is the first time United Jewish Communities has made mistakes in the population survey. D．The reported decline is not reliable.

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• The discovery of the Higgs boson is a typical case which involves

  A.controversies over the recipients’ status. B.the joint effort of modern researchers. C.legitimate concerns over the new prizes. D.the demonstration of research findings.

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• Fleming made his discovery by isolating the bacteria-killing substance found in the m

  是 否

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• PPPoE协议中的Discovery阶段的通信流程中那个报文是广播报文（)。

  A．PADO B．PADI C．PADR D．PADS

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• LDP的discovery message用于邻居发现，LDP在发现邻居时有不同的发现机制，其中该discovery message 消息在基本发现机制中（）

  A．该消息的目的IP地址为组播IP地址224.0.0.2 B．该消息被发往指定的LDP peer C．TCP连接建立之后，LSR不再继续发送hello message D．这个消息时封装在UDP报文中的，目的端口号为646 此题为多项选择题。

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