2. 职业资格
  3. 阅读下面的短文，回答问题 【A popular service that has attracted the interest of companies and home users alike is the sending of voice si

阅读下面的短文，回答问题 【A popular service that has attracted the interest of companies and home users alike is the sending of voice si

admin2018-11-06  27
问题 阅读下面的短文，回答问题
    【A popular service that has attracted the interest of companies and home users alike is the sending of voice signals over an IP-based network such as the Internet．The practice of making telephone calls over the Internet has had a number of different names，including packet voice，voice over packet，voice over the Internet，Internet telephony,and Voice over IP(VoIP)．But it appearsthe industry has settled on the term“Voice over IP”in reference to the Internet Protocol，which controls the transfer of data over the Internet．There are currently three ways to deliver VoIP tousers．The first technique is found at the corporate level．Many companies are offering VoIP systems that operate over a local area network．These systems involve a fair amount of equipment，such as VoIP servers，special IP-enabled telephones，and routers that can direct telephone calls．Today，a large portion of corporate sites have converted their older internal telephone systems toVoIP systems that operate over a LAN，thus converging two systems into one．A second comInon solution is the one often encountered at home．Using existing telephones，a special converter is added between the telephone and a high-speed Internet(DSL or cable modem)connection．Theconverter digitizes the voice signal and creates a stream of packets that are then sent over an IPconnection．The third technique involves smart cell phones．Newer cell phone technologies are allpacket-based，thus requiring a telephone call to be converted to digital packets and sending those
packets over IP networks．】
    From the paragraph above，a popular service that has attracted the interest of companiesand home users，is termed as(98)。The data transfer over the Internet is controlled by the(99)．At corporate level，many companies have replaced their older internal telephone systems with(100)that operate over a local area network。
(100)
选项 A、VoIP systems
B、IP-enabled telepl30nes
C、VoIP servers
D、routers
答案A
解析 短文翻译为：
有一项服务吸引了公司和家庭用户的兴趣，那就是通过基于IP网络来发送语音信号。通过因特网打电话的尝试已经有了许多不同的名字，包括分组语音、基于分组的语音、基于因特网的语音、因特网电话，以及IP语音(VoIP)。但是，工业上确定与因特网协议相关的“IP语音”为其名称，该协议控制着因特网上的数据传输。目前有三种方法将VoIP传输给用户。第一项技术发现于公司层面上。许多公司正在提供基于本地局域网的VoIP系统。这些系统包括大量的设备，例如VoIP服务器、特殊的IP激活电话，以及可以管理电话呼叫的路由器。今天，很大比例的公司已经将他们旧的网络电话系统换成运行于局域网(LAN)的VoIP系统，这样就将两个系统合成了一个。第二类常见的解决办法在家庭中经常碰到。使用现有的电话，在此电话和高速因特网(DSL或者线缆调制解调器)连接之间增加一个特殊的转换设备。此转换设备将语音信号数字化并创建分组流，然后将该分组流通过IP连接发送出去。第三类技术包括智能手机。较新的手机技术全都是基于分组的，因此，电话需要转换成数字分组，并通过IP网络将那些分组发送出去。
题目翻译为：
从上文中，一种流行的服务已经吸引了公司和家庭用户的兴趣，被称为(98)。通过因特网进行传输的数据被(99)所控制。在公司层次上，许多公司已经将他们旧的因特网电话设备替换为(100)，通过本地局域网运行。
(98)A．基于因特网的语音  B．基于分组的语音  C．基于IP的语音(VoIP)  D．因特网电话
(99)A．分组  B．因特网协议  C．工业  D．VoIP服务器
(100)A．VoIP系统  B．IP激活电话  C．VoIP服务器  D．路由器
本题考查的是短文理解，可以从译文中直接得到答案。
转载请注明原文地址:https://kaotiyun.com/show/1JIS777K
本试题收录于： 初级通信专业综合能力题库通信专业技术人员职业水平分类
0

初级通信专业综合能力

通信专业技术人员职业水平

相关试题推荐
随机试题
最新回复(0)