● IEE802.3ae 10Gb/s以太网标准支持的工作模式是__(60)__。
（60）A. 全双工 B. 半双工 C. 单工 D. 全双工和半双工
●通过代理服务器使内部局域网中的客户机访问Internet 时，___(61)___不属于代理服务器的功能。 （61）A.共享IP地址 B.信息缓存 C.信息转发 D.信息加密
●下列__(62）设备可以隔离ARP广播帧。
（62）A.路由器 B.网桥 C.以太网交换机 D.集线器
●在Windows 系统中，___(63)___不是网络服务组件。
（63）A. RAS B.HTTP C.IIS D. DNS
●在OSI 参考模型中，数据链路层处理的数据单位是___(64)___。
（64）A.比特 B.帧 C.分组 D. 报文
●在OGSA 标准中定义了___(65)___的概念，它提供一组遵守特定的约定并定义明确的接口，是实体之间产生、管理和交换信息的机制。
（65）A.Object B.Grid Service C.Web Service D. XML
● MIDI enables people to use ___(66)___computers and electronic musical instruments. There are actually three components to MIDI, the communications "___(67)___", the Hardware Interface and a distribution ___(68)___called "Standard MIDI Files". In the context of the WWW, the most interesting component is the ___(69)___Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol ___(70)___are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.
（66）A.personal B.electronic C. multimedia D. network
（67）A.device B.protocol C. network D. controller
（68）A.format B.text C. wave D. center
（69）A.Video B.Faxmail C. Graphic D. Audio
（70）A.messages B.packets C.frame D.information
● Certificates are ___(71)___ documents attesting to the ___(72)___ of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to ___(73)___someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a certificate also contains an ___(74)___date, the name of the CA that issued the certificate, a serial number, and perhaps other information. Most importantly, it contains the digital ___(75)___ of the certificate issuer. The most widely accepted format for certificates is X.509 , thus, Certificates can be read or written by any application complying with X.509.
（71）A.text B.data C.digital D.structured
（72）A.connecting B.binding C.composing D.conducting
（73）A.impersonate B.personate C.damage D.control
（74）A.communication B.computation C.expectation D.expiration
（75）A.signature B.mark C.stamp D.hypertext
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