● WebSQL is a SQL-like ( 71 ) language for extracting information from the web. Its capabilities for performing navigation of web ( 72 ) make it a useful tool for automating several web-related tasks that require the systematic processing of either ail the links in a (73), all the pages that can be reached from a given URL through (74) that match a ' pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (75) Interface.

试卷相关题目

• 1● Originally introduced by Netscape Communications, (66) are a general mechanism which HTTP Server side applications, such as CGI ( 67 ), can use to both store and retrieve information on the HTTP (68) side of the connection. Basically, Cookies can be used to compensate for the ( 69 ) nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based （70）.

  A.Browsers

  B.Cookies

  C.Connections

  D.Scripts

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• 2●　当网络出现连接故障时，一般应首先检查 (65)　。

  A.系统病毒

  B.路由配置

  C.物理连通性

  D.主机故障

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• 3●　 某校园网用户无法访问外部站点210.102.58.74，管理人员可以在Windows环境下使用 (64) 判断故障发生在校园网内还是校园网外。

  A.ping 210.102.58.74

  B.tracert 210.102.58.74

  C.netstat 210.102.58.74

  D.arp 210.102.58.74

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• 4●　 CDMA系统中使用的多路复用技术是 (62) 。我国自行研制的移动通信3G标准是(63)。

  A.时分多路

  B.波分多路

  C.码分多址

  D.空分多址

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• 5●　 与多模光纤相比较，单模光纤具有　 (61)　 等特点

  A.较高的传输率、较长的传输距离、较高的成本

  B.较低的传输率、较短的传输距离、较高的成本

  C.较高的传输率、较短的传输距离、较低的成本

  D.较低的传输率、较长的传输距离、较低的成本

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