通信工程师 - 中级 - 综合能力

为你找到 1381 个题目。

对于B类地址来说默认的子网掩码是（）

A. 0.0.0.0

B. 255.0.0.0

C. 255.255.0.0

D. 255.255.255.0

（）既是项目结果的需求者，又是项目实施的资金提供者。

A. 明确的目标

B. 独特的性质

C. 特定的委托人

D. 资源成本的约束性

根据我国网络的实际情况，信令网采用3级结构，第1级HSTP间采用（）连接方式。

A. 分区固定

B. 随机自由

C. 网状

D. AB平面

4G, short for fourth generation, is the fourth generation of mobile telecommunications technology, succeeding 3G. A 4G system must provide capabilities defined by ITU in IMT Advanced. Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, 3D television, and cloud computing.
Two 4G candidate systems are commercially deployed: the Mobile WiMAX standard (first used in South Korea in 2007), and the first-release Long Term Evolution (LTE) standard (in Oslo, Norway, and Stockholm, Sweden since 2009). It has however been debated if these first-release versions should be considered to be 4G or not, as discussed in the technical definition section below.
In March 2008, the International Telecommunications Union-Radio communications sector (ITU-R) specified a set of requirements for 4G standards, named the International Mobile Telecommunications Advanced (IMT-Advanced) specification, setting peak speed requirements for 4G service at 100 megabits per second (Mbit/s) for high mobility communication (such as from trains and cars) and 1 gigabit per second (Gbit/s) for low mobility communication (such as pedestrians and stationary users). Since the first-release versions of Mobile WiMAX and LTE support much less than 1 Gbit/s peak bit rate, they are not fully IMT-Advanced compliant, but are often branded 4G by service providers.
Based on the paragraph above,we know that there are (98) sorts of 4G standard.The highest speed of 4G is （99）Mb/s. It’s （100） that these first-release versions is branded as the true 4G.
（98）空应该选择？

A. one

B. two

C. three

D. four

（13）关于电信业务经营者的互联义务，下列说法错误的是（）

A. 电信业务经营者应当执行工信部制定的相关网间互联技术规范、技术规定

B. 电信业务经营者应当保障网间通信畅通，不得擅自中断互联互通

C. 电信业务经营者在互联互通中，可以适当收取规定标准外的费用

D. 发生网间通信中断或网间通信严重不畅时，电信业务经营者应当立即采取有效措施恢复通信

通信系统模型中，信源的作用是把待传输的消息转换成原始电信号，由信源输出的原始电信号是（）信号。

A. 基带

B. 频带

C. 模拟

D. 数字

计算机网络的性能指标中，（）表示单位时间内通过网络的数据量。

A. 传输速率

B. 带宽

C. 吞吐量

D. 最高数据率

下列选项中，公开、公平、公正属于（）的基本原则之一。

A. 电信业务经营者经营的基本原则

B. 电信业务经营者为电信用户提供服务的原则

C. 电信业务经营者竞争的原则

D. 电信监管的基本原则

在基于TCP/IP的网络安全体系结构基础框架中，安全电子交易是（）的安全协议。

A. 应用层

B. 传输层

C. 网络层

D. 物理层

数字通信相对于模拟通信具有（）。

A. 占用频带小

B. 抗干扰能力强

C. 传输容量大

D. 易于频分复用

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