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1●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。
A.共享IP地址
B.信息缓存
C.信息转发
D.信息加密
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2●为保证用户在网络上边下载边观看视频信息，需要采用____(60）__技术。
A.流媒体
B.数据库
C.数据采集
D.超链接
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3●要在网络上发布彩色动画文件，可以采用的存储格式是___(59)___ 。
A.BMP
B.JPEG
C.MP3
D.GIF
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4●使用200DPI的扫描分辨率扫描一幅2×2.5英寸的黑白图像，可以得到一幅___(58)___ 像素的图像。
A.200×2
B.2×2.5
C.400×500
D.800×1000
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5● ___(57)___ 标准中定义了MP3音乐标准。
A.JPEG
B.MPEG-1
C.MPEG-2
D.MPEG-3
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6●在Windows 系统中，___(63）不是网络服务组件。
A.RAS
B.HTTP
C.IIS
D.DNS
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7●在OSI 参考模型中，数据链路层处理的数据单位是___(64）。
A.比特
B.帧
C.分组
D.报文
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8●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。
A.Object
B.Grid Service
C.Web Service
D.XML
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9● 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.
A.personal
B.electronic
C.multimedia
D.network
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10● 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.
A.text
B.data
C.digital
D.structured
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