首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
计算机
Digital data can also be represented by (71) signals by use of a modem.The modem converts a seriesof binary voltage (72) into
Digital data can also be represented by (71) signals by use of a modem.The modem converts a seriesof binary voltage (72) into
admin
2019-05-15
65
问题
Digital data can also be represented by
(71)
signals by use of a modem.The modem converts a seriesof binary voltage
(72)
into an analog signal by encoding the digital data onto a carrier frequency.The resuming signal occupies a certain spectrum of
(73)
centered about the carrier and may be propagated across a medium suitable for that carrier.The most common modems represent digital data in the voice
(74)
and hence allow those data tO be propagated over ordinary voice-grade
(75)
lines.At the other end of the line,another modem demodulates the signal to recover the original data.
(73)
选项
A、medium
B、frequency
C、modem
D、carrier
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/A8kZ777K
本试题收录于:
网络管理员上午基础知识考试题库软考初级分类
0
网络管理员上午基础知识考试
软考初级
相关试题推荐
下列关闭资源管理器的方法不正确的是(39)。
What refers to the protocols used to determine who goes next on a multi-access channel?(29)
如果想将在甲电脑上制作的演示文稿在乙电脑上演示,而乙电脑未安装PowerPoint应用程序,而且演示文稿中使用的链接文件或TrueType字体在乙电脑上不存在,以下操作______能保证此演示文稿在乙电脑上的正常演示。
(73)isusedtoensuretheconfidentiality,integrityandauthenticityofthetwoendpointsintheprivatenetwork.
(74)isanetworklayerdevicethatsupportsmultipleLANinterfacesandsegmentsLANsintosmallercollisionandbroadcastdoma
Whenyouuseacomputertocreate,editandprint________,wordprocessingisused
Thefunctionof______istoconvertinformationfromonephysicalrepresentationtodigitalelectricalsignals.
______enablesuserstosearch,access,anddownloadinformationfromInternet.
In(66)the strength of the carrier signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address
In8011terminology.allcommunicationwastogothroughthebasestation,calledan(75)
随机试题
独立的内分泌器官是
制备时一般不加崩解剂的片剂有
防止毒物继续进入人体,减少肺毛细血管渗出,改善肺通气功能等措施,适用于哪种毒物中毒
在我国,里地线多采用临街宗地进深的()确定。
某农副产品加工企业,生产多种类别产品,每种产品的收入成本都进行分别核算,制造费用按照合理方法在不同产品之间进行分摊,2018年发生下列业务:(1)2018年7月1日进口一批农产品,用于生产儿童零食,取得海关进口增值税专用缴款书,不含税金额200万元,税额
与学生主体性内涵不相一致的特点是()
我国幅员辽阔,各地各方面的差异很大,为了使教学不脱离实际而补充必要的乡土教材,贯彻的教学原则是()。
下列法律谚语与其蕴含的法学理念对应正确的是:
计算机中对数据进行加工与处理的部件通常称为【】。
在报表中,不能实现的功能是
最新回复
(
0
)