W_Exploration_Network_Chapter01.ppt

Living in a Network Centric World Network Fundamentals – Chapter 1 Objectives Describe(描述) how networks impact(重要性) our daily lives(日常生活). Describe the role(角色) of data networking in the human network. Identify(识别) the key components(组成) of any data network(数字网络). Identify the opportunities(机会) and challenges(挑战) posed(引起) by converged(融合) networks. Describe the characteristics(特性) of network architectures(结构): fault tolerance(允许的差错率), scalability(), quality of service(服务质量) and security (安全). Install(安装) and use IRC clients and a Wiki server. Living in a Network Centric World 1.1 Communication in a Network-Centric World 1.2 Communication-An Essential(基本) Part of Our Lives 1.3 The Network as a Platform(平台) 1.4 The Architecture(架构) of the Internet 1.5 Trends(趋势) in Networking 1.1 Communication in a Network-Centric World 1.1.1 Networks Supporting the Way We Live 1.1.2 Examples of Today‘s Popular(流行) Communication(通讯) Tools 1.1.3 Networks Supporting the Way We Learn 1.1.4 Networks Supporting the Way We Work 1.1.5 Networks Supporting the Way We Play 1.1.1 Networks Supporting the Way We Live Communication is almost as important to us as our reliance(依靠) on air, water, food, and shelter. 1.1.1 Networks Supporting the Way We Live The way we live is supported by services delivered by the data network. Online Banking(在线银行) Traffic conditions(交通运输) Weather Forecast(天气预报) World News(世界新闻) Lab: Using Google Earth? to View the World 1.1.2 Examples of Todays Popular Communication Tools Instant messaging Real time communication between 2 or more people based on typed text Weblogs (Blogs) Web pages created by an individual Podcasting Website that contains audio files available for downloading 1.1.2 Examples of Todays Popular Communication Tools IRC：Internet Relay Chat 的英文缩写，中文一般称为互联网中继聊天。IRC的工作原理非常简单，您只要在自己的PC上运行客户端软件，然后通过因特网以IRC协议连接到一台IRC服务器上即可。它的特点是速度非常之快，聊天时几乎没有延迟的现象，并且只占用很小的带宽资源。相比于ICQ来说，它更具人性化，而且是即时式的聊天，更接近真实的聊天情景。 ICQ：聊天软件，名称来自I seek you （我找你）。它是互联网上最流行的即时信息传递