2022年通信工程师-中级通信工程师考试题库难点易错点剖析附答案有详解21.docx
《2022年通信工程师-中级通信工程师考试题库难点易错点剖析附答案有详解21.docx》由会员分享,可在线阅读,更多相关《2022年通信工程师-中级通信工程师考试题库难点易错点剖析附答案有详解21.docx(25页珍藏版)》请在三一文库上搜索。
1、2022年通信工程师-中级通信工程师考试题库(难点、易错点剖析)附答案有详解1. 单选题NB-IoT is built in the cellular network which only consumes about 180kHz bandwidth and uses the license band. The NB-IoT is the abbreviation of( ).问题1选项A.Narrow Band Internet of ThingsB.Narrow Board Internet of ThingsC.Next Band Internet of ThingsD.Next Bo
2、ard Internet of Things【答案】A【解析】考查NB-IoT 的缩写:Narrow Band Internet of Things,故本题选A2. 单选题软件是计算机执行某种操作任务的程序集合,包括系统软件和应用软件, ( )属于应用软件。问题1选项A.Harmony OSB.LinuxC.Microsoft OfficeD.Windows NT【答案】C【解析】计算机软件系统按其功能分为系统软件和应用软件两大类,其中系统软件的主要功能是对整个计算机系统进行调度、管理、监视及服务等,包括操作系统、程序设计语言和数据库管理系统等。应用软件是用户利用计算机及其提供的系统软件为解决
3、各种实际问题而编制的计算机程序,是指除了系统软件以外的所有软件,由各种应用软件包和面向问题的各种应用程序组成。系统软件是为了方便用户控制和管理计算机的各种资源,充分发挥计算机系统的功能,围绕计算机系统本身开发的程序系统叫作系统软件,包括操作系统、程序设计语言和数据库管理系统等。A、B、D都属于操作系统软件。应用软件:软件公司或用户为解决某类应用问题而专门研制的软件称为应用软件。应用软件分为3大类:通用应用软件、专用应用软件及定制应用软件。常见的应用软件有文件处理软件(例如WPS、Word等)、网络应用软件(例如QQ、MSN、淘宝旺旺等)、人事管理软件、工程设计绘图软件、办公事务管理软件、图书情
4、报检索软件、医用诊断软件、辅助教学软件、辅助设计软件、网络管理软件及实时控制软件等。本题选C。3. 单选题通信方式是指通信双方之间的工作方式或信号传输方式,对于点对点之间的通信,按(),通信方式可分为单工、半双工及全双工通信。问题1选项A.消息传递方向的不同B.消息传递的方向与时间的关系C.消息传递的方向与使用的频率的关系D.消息传递时使用的频率不同【答案】B【解析】通信方式是指通信双方之间的工作方式或信号传输方式。(1)按消息传递的方向与时间分类,通信方式可分为单工、半双工及全双工通信;单工通信,是指消息只能单方向传输的工作方式。半双工通信,是指通信双方都能收发消息,但不能同时进行收和发的工
5、作方式。全双工通信,是指通信双方可同时进行收发消息的工作方式。一般情况全双工通信的信道必须是双向信道。(2)按数字信号排序分类:并行传输和串行传输。本题选B。4. 单选题PCM是一种将模拟语音信号变换成数字信号的编码方式,下图表示的是PCM过程中的()信号。问题1选项A.压缩B.抽样C.量化D.编码【答案】D【解析】(1)抽样信号在时间上的离散化:模拟信号首先被抽样。模拟信号被抽样后,成为抽样信号,它在时间上是离散的,但其取值仍然是连续的,所以是离散模拟信号。(2)量化信号在幅值上的离散化:量化后的结果是使抽样信号变成量化信号,其取值是离散的,故量化信号已经是数字信号了,它可以看成是多进制的数
6、字脉冲信号。量化电平数越多,量化噪声越小,量化信噪比越高。(3)编码:量化后的信号,已经是取值离散的多电平数字信号。将多电平信号转换成二进制符号的过程就是编码过程。在PCM中,采用“四舍五入”的原则量化为整数值,再对整数值进行二进制编码。编码后的PCM信号是一个二进制数字序列。本题选D。5. 单选题The COVID-19 pandemic is taking a colossal toll in human suffering and lives.A significant amount of new scientific research and data sharing is under
7、way due to the pandemic which is still rapidly spreading. There is now a growing amount of coronavirus related datasets as well as published papers that must be leveraged along with artificial intelligence (AI)to fight this pandemic by driving news approaches to drug discovery, vaccine development,
8、and public awareness. AI can be used to mine this avalanche of new data and papers to extract new insights by cross-referencing papers and searching for patterns that AI algorithms could help discover new possible treatments or help in vaccine development. Drug discovery is not a trivial task and AI
9、 technologies like deep learning can help accelerate this process by helping predict which existing drugs.or brand-new drug-like molecules could treat COVID-19. AI techniques can also help disseminate vital information across the globe and reduce the spread of false information about COVID-19. The p
10、ositive power and potential of AI must be harnessed in the fight to slow the spread of COVID-19 in order to save lives and limit the economic havoc due to this horrific disease.There is now a ( )amount of coronavirus related datasets as well as published papers that must be leveraged along with arti
11、ficial intelligence(AI)to fight this pandemic by driving news approaches to drug discovery, vaccine development, and public awareness.问题1选项A.growB.growingC.reduceD.reduction【答案】B【解析】新冠肺炎大流行正在给人类带来巨大痛苦和生命损失。由于这一流行病仍在迅速传播,目前科学家们正在进行大量新的科学研究和数据共享。现在有越来越多的冠状病毒相关数据集和已发表的论文,这些必须与人工智能(AI)结合,通过推动药物发现、疫苗开发和公
12、众意识的新方法来抗击这一流行病。人工智能可以用来发掘大量的新数据和论文,通过交叉引用论文,搜索人工智能算法可以帮助发现新的可能的治疗方法或帮助研发疫苗,从而取得新的进展。药物研发不是一项简单的任务,像深度学习这样的人工智能技术可以帮助预测哪些现有药物或新的类药物分子可以治疗COVID-19。人工智能技术还可以在全球传递重要信息,减少关于COVID-19的虚假信息的传播。为了挽救生命,限制这一可怕疾病带来的经济损失,我们必须充分利用AI的积极力量和潜力来减缓COVID-19的蔓延。6. 单选题The COVID-19 pandemic is taking a colossal toll in h
13、uman suffering and lives.A significant amount of new scientific research and data sharing is underway due to the pandemic which is still rapidly spreading. There is now a growing amount of coronavirus related datasets as well as published papers that must be leveraged along with artificial intellige
14、nce (AI)to fight this pandemic by driving news approaches to drug discovery, vaccine development, and public awareness. AI can be used to mine this avalanche of new data and papers to extract new insights by cross-referencing papers and searching for patterns that AI algorithms could help discover n
15、ew possible treatments or help in vaccine development. Drug discovery is not a trivial task and AI technologies like deep learning can help accelerate this process by helping predict which existing drugs.or brand-new drug-like molecules could treat COVID-19. AI techniques can also help disseminate v
16、ital information across the globe and reduce the spread of false information about COVID-19. The positive power and potential of AI must be harnessed in the fight to slow the spread of COVID-19 in order to save lives and limit the economic havoc due to this horrific disease.The title of this paragra
17、ph is( ).问题1选项A.Characteristics of Artificia IntellgenceB.Characteristics of Covid-19C.Artifial Inteligence and COVID-19:A Multidisciplnary ApproachD.How to Fight Against COVID-19【答案】C【解析】新冠肺炎大流行正在给人类带来巨大痛苦和生命损失。由于这一流行病仍在迅速传播,目前科学家们正在进行大量新的科学研究和数据共享。现在有越来越多的冠状病毒相关数据集和已发表的论文,这些必须与人工智能(AI)结合,通过推动药物发现、
18、疫苗开发和公众意识的新方法来抗击这一流行病。人工智能可以用来发掘大量的新数据和论文,通过交叉引用论文,搜索人工智能算法可以帮助发现新的可能的治疗方法或帮助研发疫苗,从而取得新的进展。药物研发不是一项简单的任务,像深度学习这样的人工智能技术可以帮助预测哪些现有药物或新的类药物分子可以治疗COV ID-19。人工智能技术还可以在全球传递重要信息,减少关于COVID-19的虚假信息的传播。为了挽救生命,限制这一可怕疾病带来的经济损失,我们必须充分利用AI的积极力量和潜力来减缓COVID-19的蔓延。7. 单选题With the advantages of global coverage and ne
19、twork security, satellite mobile communication system can directly provide terminal users( )international roaming and low-cost communication.问题1选项A.toB.withC.forD.of【答案】B【解析】解析:卫星具有全球覆盖和网络安全的优势,移动通信系统可以直接为终端用户提供国际漫游和低成本通信。故本题答案选B8. 单选题信源编码是一种以提高通信有效性为目的而对信源符号进行的变换,最原始的信源编码是()。问题1选项A.H.264/AVCB.算术编码C
20、莫尔斯电码D.Huffman编码【答案】C【解析】信源编码有两个基本功能:一是提高信道传输的有效性,即通过某种数据压缩技术设法减少码元数目和降低码元速率;二是完成模/数(A/D)转换,即当信源给出的是模拟信号时,信源编码器将其转换成数字信号,以实现模拟信号的数字化传输。最原始的信源编码是莫尔斯电码,另外ASCII码和电报码都是信源编码。现代通信应用中常见的信源编码方式有无损编码和有损编码,无损编码包括Huffman编码、算术编码、L-Z编码,有损编码如脉冲编码调制、差分脉冲编码调制、自适应差分脉冲编码调制、增量调制等。本题选C。9. 单选题The COVID-19 pandemic is t
21、aking a colossal toll in human suffering and lives.A significant amount of new scientific research and data sharing is underway due to the pandemic which is still rapidly spreading. There is now a growing amount of coronavirus related datasets as well as published papers that must be leveraged along
22、 with artificial intelligence (AI)to fight this pandemic by driving news approaches to drug discovery, vaccine development, and public awareness. AI can be used to mine this avalanche of new data and papers to extract new insights by cross-referencing papers and searching for patterns that AI algori
23、thms could help discover new possible treatments or help in vaccine development. Drug discovery is not a trivial task and AI technologies like deep learning can help accelerate this process by helping predict which existing drugs.or brand-new drug-like molecules could treat COVID-19. AI techniques c
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 2022 通信 工程师 中级 考试 题库 难点 易错点 剖析 答案 详解 21
