Network

1. Device

1.1. Router

1.2. Switch

1.3. Network

2. Network Structure

2.1. Tully

2.2. Tree

2.3. Nesh

2.4. Ping

2.5. Bus

3. Protocol and their port

3.1. DNS

3.2. FTP

3.3. IP

3.4. HTTP

4. App and service

4.1. Storage

4.1.1. Wide web

4.1.2. Digital Video, audio

4.2. Server

4.2.1. Printer

4.2.2. Fax Machine

5. Digital telecomunication Network

5.1. Data Link

5.1.1. Cables

5.1.2. Wireless

6. Network Link

6.1. Electrical Cable

6.2. Optical Fibe

6.3. Radio wabe