CCNA培训 1第一章互连网概念综述（国外英文资料）.doc

CCNA培训 1第一章互连网概念综述（国外英文资料） In this paper, by yhtalang2 contribution Powerpoint documents may be a poor experience at the WAP end. It is recommended that you choose TXT, or download the source file to the native view. First chapter on the concept of interconnection In 1999, Cisco Systems Inc. 2-1 Defining network components Home office user Internet Mobile office user division In 1999, Cisco Systems Inc. The companys headquarters ICND - 2-2 Defining network components (continuing to define network component continuation) division The layer 2 Server group ISDN home office Layer 1 typical network ICND - 2-3 The remote In 1999, Cisco Systems Inc. Hierarchical network structure definition Core layer The distribution layer Access layer In 1999, Cisco Systems Inc. ICND - 2-4 Access layer features Access layer Connect the device to the network access point In 1999, Cisco Systems Inc. ICND - 2-5 The distribution layer features What is the connection point of the access layer? Routing data? Split the broadcast domain multicast domain/multicast domain? Dielectric conversion? Security? Access point distribution layer for remote access In 1999, Cisco Systems Inc. ICND - 2-6 The core features Core layer High-speed transfer data? Do not do any processing of the data In 1999, Cisco Systems Inc. ICND - 2-7 Summary of the OSI model The main purpose of establishing the seven-story model is to solve the compatibility problems encountered in the interconnection of heterogeneous networks. The main purpose of establishing the seven-story model is to solve the compatibility problems encountered in the interconnection of heterogeneous networks. Its the biggest advantage is the service, interfaces and protocols, a clear distinction between the three concepts: the biggest advantage is the service, interfaces and protocols a clear distinction between the three concepts: service description what a layer for a layer to provide some functions, interface explaining how the lower level of service,