红头发CCNA视频教程PPT__第1章 概述.ppt

第一章概 述 CISCO认证体系介绍 课程摘要 CCNA+课程目标 通过CCNA+课程的学习，您可以完成如下任务： 在什么情况下应用集线器、交换机和路由器 利用Cisco软件确认端口、协议、地址和可连接性 根据要求互连交换机和路由器 配置交换机和路由器以支持LAN和WAN 服务 设置IP子网以便于有效地管理网络 通过配置访问列表来控制对网络段或网络资源的访问 确认交换机、路由器及其配置的网络服务是按我们的预期在运作 判断网络故障的原因并解决之 对一些实际工程案例有一定的分析和解决能力 常用图例 网络一览图 ? 1999, Cisco Systems, Inc. ICND—2-* ? 1999, Cisco Systems, Inc. 2-* 网络基础 OSI TCP/IP IOS IP VLSM CIDR ACL 路由协议 RIP IGRP EIGRP OSPF 交换网络 VLAN VTP TRUNK STP 广域网技术 HDLC PPP FR ISDN ADSL NAT 第 1单元 第 2单元 第 3单元 第 4单元 广域网 “云” 访问 服务器 ISDN 交换机 数据服务单元/ 通道服务单元 Web服务器 桥 交换机 路由器 以太网 串行线 快速以太网 DSU/CSU 文件服务器 个人电脑 调制解调器 虚拟局域网 (颜色可能不同) 集线器 网络云或广播域 电路交换线 多层 交换机 网络 交换机 Purpose: This chapter reviews general networking theory and introduces students to some of Cisco’s product line. Timing: This chapter takes approximately 1.5 hours to present. Note: This section has a product selection tool laboratory exercise at the end. Contents: Objectives—This section explains what the student will be able to do at the end of this chapter. Defining Network Components—This section displays where devices are placed in the network. Mapping Business Needs to a Hierarchical Model—This section describes the heirarchical model used in network design. OSI Model Overview—This section reviews the OSI model. Communicating Between Layers—This section describes encapsulation and de-encapsulation. Written Exercise 1—This section has a written exercise to test the students’ knowledge of the OSI model. Physical Layer Functions—This section describes the physical layer of the OSI Model. Data Link Layer Functions—This section describes the data link layer of the OSI Model. Network Layer Functions—This section describes the network layer of the OSI Model. Transport Layer Functions—This section describes the transport layer of the OSI Model. Purpose: This chapter reviews general networking theory and introduces students to some of Cisco’s product line. Timing: This chapter takes approximately 1.5 hours to present. Note: This section has a product