通信中级设备环境考试试题之每日一练【4、11】

2018年通信设备环境考试将于10月份进行，为了帮助各位考生更好的备考，以下是关于通信设备环境考试试题的整理，供大家一起交流与学习。

1、为了使网络外部性内部化，以增加整体社会福利，解决的办法是实行互联互通和（）。
A．增加业务种类
B．提高市场进入壁垒
C．降低市场进入壁垒
D．对用户提供补贴
参考答案：D

2、ATM网可提供光接口和电接口连接，标准接入速率是（）。
A．155Mbit/s B．51Mbit/s
C．2Mbit/s D．192kbit/s
参考答案：A

3、面向连接的通信方式（）。
A．控制机制简单
B．带宽利用率高
C．有利于突发性强的业务
D．有利于数据可靠传输
参考答案：D

4、下列属于系统软件的是（）。
A．字处理软件B．CAD软件
C．安卓  D．媒体播放器
参考答案：C

5、（）是计算机存储数据、表示数据的最小单位。
A．字节 B．字C．比特D．字符
参考答案：C

6、目前我国的频率资源是有限的需要以（）的方式以保证互通。
A．统一划分 B．拍卖
C．先用先得 D．协商
参考答案：A

7、以下关于ATM业务特点的叙述中，正确的是（）。
A．ATM业务提供一直或半一直连接，不具备交换功能
B．ATM采用同步时分复用，有效利用了带宽
C．ATM采用高速电路交换，降低了网络时延
D．ATM能满足低速到高速多层次的业务需求
参考答案：D

8、以下（）不是CHINANET提供的业务。
A．电子信箱B．公众信息服务
C．域名服务D．无线寻呼
参考答案：D

9、SDH光通信系统采用（）技术提供网络的数字通道。
A.时分复用  B.波分复用
C.码分复用 D.频分复用
参考答案：A

10、【The Internet ofthings(IoT)is the inter-networking ofphysical devices，vehicles，buildings，and other items embedded with electronics，software，sensors，actuators，and network connectivity which enable these objects to collect and exchange data.
In 2013 the Global Standards Initiative on Internet ofThings(IoT-GSI)defined the 10T as"a global infrastructure for the information society，enabling advanced services by interconnecting(physical and virtual)things based on existing and evolving interoperable information and communication technologies"and for these purposes a"thing"is"an object ofthe physical world(physical things)or the information world(virtual things).which is capable ofbeing identified and integrated into communication networks".The 10T allows objects to be sensed or controlled remotely across existing network infrastructure，creating opportunities for more direct integration of the physical world into computer-based systems，and resulting in improved efficiency.Accuracy and economic benefit in addition to reduced human intervention.
When IoT is augmented with sensors and actuators，the technology becomes an instance of the more general class of cyber­physical systems，which also encompasses technologies such as smart grids，virtual power plants，smart homes，intelligent transportation and smart cities.Each thing is uniquely identifiable through its embedded computing system but is able to interoperate within the existing Intemet infrastructure.Experts estimate that the 10T wi l1 consist of about 30 bi l1ion objects by 2020.】
Based on the paragraph above，we know that the applications ofthe 10T include( ).RFID technology makes it possible to automatically( )every object on the Internet ofthings，and is the foundation ofnetworking.From the industry point of view，IoT is mainly involved in industries including(  ).
A.environmental monitoring
B.intelligent transportation
C.energy management
D.all ofthe above
A.identify  B.find C.track D.encrypt
A.electronics
B.communication
C.software
D.all of the above
参考答案：D|A|D

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