通信中級設備環(huán)境考試試題之每日一練【4、11】

2018年通信設備環(huán)境考試將于10月份進行，為了幫助各位考生更好的備考，以下是關于通信設備環(huán)境考試試題的整理，供大家一起交流與學習。

1、為了使網(wǎng)絡外部性內(nèi)部化，以增加整體社會福利，解決的辦法是實行互聯(lián)互通和（）。
A．增加業(yè)務種類
B．提高市場進入壁壘
C．降低市場進入壁壘
D．對用戶提供補貼
參考答案：D

2、ATM網(wǎng)可提供光接口和電接口連接，標準接入速率是（）。
A．155Mbit/s B．51Mbit/s
C．2Mbit/s D．192kbit/s
參考答案：A

3、面向連接的通信方式（）。
A．控制機制簡單
B．帶寬利用率高
C．有利于突發(fā)性強的業(yè)務
D．有利于數(shù)據(jù)可靠傳輸
參考答案：D

4、下列屬于系統(tǒng)軟件的是（）。
A．字處理軟件B．CAD軟件
C．安卓  D．媒體播放器
參考答案：C

5、（）是計算機存儲數(shù)據(jù)、表示數(shù)據(jù)的最小單位。
A．字節(jié) B．字C．比特D．字符
參考答案：C

6、目前我國的頻率資源是有限的需要以（）的方式以保證互通。
A．統(tǒng)一劃分 B．拍賣
C．先用先得 D．協(xié)商
參考答案：A

7、以下關于ATM業(yè)務特點的敘述中，正確的是（）。
A．ATM業(yè)務提供一直或半一直連接，不具備交換功能
B．ATM采用同步時分復用，有效利用了帶寬
C．ATM采用高速電路交換，降低了網(wǎng)絡時延
D．ATM能滿足低速到高速多層次的業(yè)務需求
參考答案：D

8、以下（）不是CHINANET提供的業(yè)務。
A．電子信箱B．公眾信息服務
C．域名服務D．無線尋呼
參考答案：D

9、SDH光通信系統(tǒng)采用（）技術提供網(wǎng)絡的數(shù)字通道。
A.時分復用  B.波分復用
C.碼分復用 D.頻分復用
參考答案：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
參考答案：D|A|D

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