Characteristics of a Network

• Speed
• Cost
• Security
• Availability
• Scalability
• Reliability
• Topology

 

Two types of topologies:

• Physical topology:
  the arrangement of the cable, network devices, and systems (PCs and servers).←佈線方式
  
• Logical topology:
  the path that the data signals take through the physical topology. ←資料傳遞方式