[CCNA学习指南] 第一章 网络互联 Internetworking
网络 Network
@ZYX 写于2020年07月01日
第一章 网络互联 Internetworking
摘要
CCNA考点
- Describe how a network works>
- Describe the purpose and functions of various network devices
- Select the components required to meet a network specification
- Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network
- Describe common networked applications including web applications
- Describe the purpose and basic operation of the protocols in the OSI and TCP models
- Describe the impact of applications (Voice over IP and Video over IP) on a network
- Interpret network diagrams
- Describe the components required for network and Internet communications
- Identify and correct common network problems at layers 1, 2, 3, and 7 using a layered model approach
- Differentiate between LAN/WAN operation and features
- Configure, verify, and troubleshoot a switch with VLANs and interswitch communications
- Explain network segmentation and basic traffic management concepts
- Implement an IP addressing scheme and IP Services to meet network requirements in a medium-size Enterprise branch office network
- Explain the operation and benefits of using DHCP and DNS
- Configure, verify, and troubleshoot basic router operation and routing on Cisco devices
章节顺序
- Internetworking basics
- Network segmentation
- How bridges, switches, and routers are used to physically and logically segment a network
- How routers are employed to create an internetwork
1.1 网络互联基础 Internetworking Basics
- 模拟一个交流场景 Bob -=- HUB -=- Sally
- This network is actually one collision domain and one broadcast domain
- they’re both on the same LAN connected with a multiport repeater (a hub).
- Bob is actually going to use Sally’s MAC address to get ahold of her.
- How to get MAC?