查询词典 digital network

In this paper, the concept of network security and security structures of OSI and Internet is introduced, and various threats confronting the computer network are also discussed. Several kinds of network information security technologies, including firewall technology, virtual private network, intrusion detection system, data encryption technology, identity authentication and security protocol etc. are also examined. The security of internal network is the biggest problem in the construction of each network. The solution to this problem lies in setting up a firewall. The theory of a firewall and the approach to its actualization is studied. Intrusion detection system, an important part of the computer network security system, has gained extensive attention. IDS monitors the computer and network traffic for intrusion and suspicious activities. It not only detects the intrusion from the extranet hacker, but also the intranet users. The emergence of virtual private network paves the way for realizing secure connection of LAN quickly and at a relatively low cost. The concept, function, key techniques, including the tunnel technology, and the ways to realize VPN are expounded in this paper. Also introduced is the data encrypt network technology, which is called the soul of computer network security, such as digital digest, digital signature, digital certificate, digital encrypt arithmetic and so on. At the same time, the principle and the process of implementing network security by digital certificate and digital signature, the basic principle and characters of security protocols, and finally, three of the security protocols, concerning the security problems in network, IPsec, SLL and SET are analyzed in detail Computer network system should be a system of dynamic defence, both dynamic and static, passive as well as active, and even offensive, combined with management and technology.

本文系统地介绍了网络安全的概念、OSI及Internet的安全体系结构，并讨论了计算机网络面临的各种安全威胁；内部网络的安全问题是每个建网单位面临的最大问题，可以认为防火墙技术是解决网络安全的一个主要手段，本文研究了防火墙的原理及其实现手段；作为一种主动的防御措施，入侵检测系统作为网络系统安全的重要组成部分，得到了广泛的重视，TDS对计算机和网络资源上的恶意使用行为进行识别和响应，不仅检测来自外部的入侵行为，也监督内部用户的未授权活动；虚拟专用网技术的出现，为实现网络间的连接提供了快速安全但又相对便宜的手段，本文较深入的探讨了实现VPN的隧道技术，并对VPN的概念、功能、实现途径、基本构成、关键技术及发展前景等问题进行了全面论述；数据加密技术是网络安全核心技术之一，本文从数据加密算法、数字摘要、数字签名及数字证书等几方面简要介绍了数据加密技术，并分析用数字证书和数字签名实现网络安全的原理和过程；对安全协议的基本原理、主要特点进行了较为深入的研究，并就网络的安全性问题剖析了三种安全协议：IPsec协议、SLL协议和SET协议。

Usually Advanced Digital Network refers to speeds at or above 56 Kbps.

通常高级数字网络指速度为 56 Kbps 或更高速度的网络。

So we founded Yishun digital network mall, where people can directly get to know products. Our website can provide more exhaustive profiles, histories and comments from other customers than those in the store; on the other hand, it will tempestuously decrease the cost of running a shop, so that it can sell goods to customers at a low price.

因此我们创办一瞬数码网络商城网站，让产品在网站上直接面对消费者，一方面网站可以提供比在商店购物中更为详尽的资料、历史渊源以及顾客评论等信息，顾客可以方便的从琳琅满目的各类商品中快速查询出需要的产品；另一方面也大大的减少商店运营成本，将价格实惠转让给顾客。

As to promote China's fixed and mobile data communications, cable television networks and value-added services digital network development

成为推动中国固网、移动数据通信、有线电视网络增值业务及网络数字化发展的

In addition, the influence of pervasive modern technology and the digital network leads her to believe that "the virtual life might leave more truthful traces or existence".

林欣与其同代人一样，受现代科技、数字网络充斥于生活的影响，使她认为&虚拟的生命也许有着更为真实的存在痕迹。&

OBJECTIVE: To discuss the challenges and opportunities for traditional pharmacies in digital network time.

目的：探讨数字网络时代传统药房面临的挑战和机遇。

Fascinated by the spiritual forces such as human ancient civilization, the mystery of Prehistoric Art, symbolism, originality, and the temptation of post-information age digital network life which deeply obsess me, I've been used to accept the prettified fixed world, but at the same time trying to build another new world.

对人类远古文明、史前艺术的神秘、象征、原始等精神力量的迷恋，以及后信息时代数字网络生活的诱惑，深深的困扰着我，已习惯于去接受被粉饰的既定世界然而又力图建构新世界的同时对这一切的质疑使我不断地游离于历史与现实、本我与自我、理智与放纵、具象与抽象之间。

Dealing with concretes, Working decently 〓 Shanghai New Ladder Digital Network Limited Company was founded in 1998, its predecessor is Shanghai Xinlan Electronic Limited Company, who is the agency factor for main boards and chips selling.

崇本务实正派经营〓上海新阶梯数码网络有限公司成立于1998年，前身为上海欣岚电子有限公司，从事电脑主机板及板卡代理销售服务，1999设立自属门市。

Thirdly, the comparison between traditional paper carrier and the digital network carrier was probed.

比较研究了传统纸质载体与数字化网络载体兼容并存的客观条件，提出目前信息载体多元化存在的基础；然后，阐释网络环境下，信息用户呈现出的新特征和新变化；最后，分析影响传播效果的因素，从五个方面点明信息传播取得理想效果的重要依据。

Our company specializes in the operation of multimedia conferencing systems, projectors, central control system, POLYCOM remote audio and video conferencing systems, large-screen rear projection machine and digital network surveillance VPON conferencing equipment for the educational system and foreign design and installation of multimedia systems and institutions.

我公司专业经营多媒体会议系统，投影机、中央控制系统、POLYCOM远程音视频会议系统、大屏幕背投一体机及VPON数字网络监控等会议设备，为教育系统及外企事业单位设计安装多媒体系统。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。