Network

Description:

• A bunch of Router talking to eachother
• has Internet protocol suite running with OSI model standard

LAN vs WAN

CDN

Network Flow Problem

Network monitoring:

• Monitoring tools can be 1 of:
  1. basic connectivity: test ability to communicate between 2 nodes and report information about path, performance. example: ping command, tracepath command
  2. Packet capturing/packet analyzer: intercept and display the contents of traffic. example: Wireshark, tcpdump
  3. Scanning: Connect to addresses of specific nodes or segment, port and report. example: nmap command