物理链路 meaning in English
physical link
Examples
- Many network users use tcp / ip protocols that were composed of a series of protocol layers to finish their communication tasks . the user ' s data information is divided into a great many of data blocks . when the data blocks are transported through the layers of the protocols , they are added the controlled information in their headers
网络用户终端大多使用tcp / ip通信协议完成信息的传输任务， tcp / ip协议是层次结构的通信协议，用户数据信息被划分成一个个的数据分段，经过各层协议时，添加上各层协议的控制信息，作为数据分段的头部信息，这个头部信息说明了各相应层通信的规则，数据分段经各层封装后最终形成物理数据帧通过物理链路送到通信网络上传输。 - The software system provides the switch with the ability to support each user monopolize lombps bandwidth , through which the user can use vod , voip and other digital services , and it also allows the switch to support multicasting , trunk , and traffic isolation . this thesis consists of five parts . the first chapter introduces ethernet access technologies and requirements for the switches
通过软件系统的配置，接入交换机能够使用户独享10mbps带宽，使用视频点播、 voip等实时业务，支持组播以提高网络带宽的利用率，支持链路聚合，在互连交换机的多条可用的物理链路间实现自动的负载均衡。 - The thesis is organized as below : in chapter 1 , the background knowledge is given which is needed for study on bluetooth security mechanism and implementation . first bluetooth technology is overviewed including its develop history , radio interface , physical links , interference , network topology , core protocol , etc . next communication security is introduced according to the model of network security architecture from osi . finally some primary cryptographic techniques are discussed based on symmetric encryption , asymmetric encryption and advanced encryption standard published years ago
本文研究了利用蓝牙技术提供各种安全服务和实现的课题，并通过一些具体实现的实例进行阐述，具体安排如下：在第一部分，本文首先回顾了蓝牙技术及发展情况，主要包括蓝牙发展简史、蓝牙标准的射频接口、物理链路、干扰情况、网络拓扑结构以及核心协议等；然后介绍了通信安全的基础知识，讨论了osi系统中的四层网络安全结构模型；最后给出了各种加密技术的基本理论，包括对称加密体制如des和blowfish 、非对称加密体制( rsa公钥算法、数字签名和身份证明等)以及新一代的高级加密标准( advancedencryptionstandard ， aes )等。