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通信工程师 - 中级 - 传输与接入(无线)

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电信条例规定,经营基础电信业务的公司的股权结构中,国有股权或股份不得少于()。


A. 40%

B. 50%

C. 51%

D. 61%

开放系统互连 (OSI)参考模型中,(  )不属于通信子网的范畴。

A. 物理层

B. 数据链路层

C. 网络层

D. 传输层

(  )是通过滤波器的作用,增强小振幅的频率分量并衰减大振幅的频率分量,从而获得平坦的接收频率响应。

A. 集接收

B. Rake接收技术

C. MIMO技术

D. 均衡技术

(  )是通信网的核心设备,主要完成呼叫处理、信令处理和操作维护管理(OAM)等功能。

A. 服务器

B. 交换设备

C. 传输链路

D. 终端设备

卫星通信地球站中的上、下变频器是用来在射频与中频之间进行(  )。

A. 调制

B. 解调

C. 频谱搬移

D. 频率变换

采用蜂窝系统组网最大的优越性之一就是可以实现(  )。

A. 无线资源再生

B. 频率复用

C. 干扰降低

D. 噪声降低

阅读下面的短文,回答问题

Scope, complexity ,and scale of even a single 5G network are massively larger than in today's networks.The main challenge is automation on all levels of the 5G ecosystem.without it, the network simply will not work; neither for the anticipated scale nor for the desired functional complexity.
Fundamentally, automation is realized by a largely self-governed network bound to varying business goals: ifs configuration, its services, how they are provided, and how it is managed. A governance model, ideally realized by policies, defines how these goals are implemented and monitored. Those policies can be low-level configuration parameters, mid -level strategies or high-level intents and goals. Using a mix of these -policies implies translation between: top-down for realization and bottom-up for action / benefit and validation purposes.
Networks and models must address multiple, diverse constituencies. Human intervention should be kept to a minimum( oversight ). Management means monitoring and repair; not control . Classic self capabilities are the benefits
The main idea of this shot article is(  ).

A. the main challenge of 5G

B. the complexity of 5G network

C. a automation model

D. human intervention

( ) technology is an approach to cloud computing that facilitates network management and enables programmatically efficient network configuration in order to improve network performance and monitoring.

A. SDN

B. CDN

C. Big data

D. All-IP

 IMS的每个(   )都有自己的任务,协同工作、相互配合来共同完成对会话的控制。


A. 核心架构

B. 功能实体

C. 体系结构

D. 功能模块

在硬件之上覆盖的第一层软件称为(  ),它是管理计算机硬件资源、方便用户使用的一个软件集合。


A. 操作系统

B. 系统软件

C. 应用软件

D. 工具软件

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