各類網路傳輸延遲

1. Transmission delay is the amount of time required to push all of the packet's bits into the wire. (網卡把所有資料都丟到 網路線上所花時間)

2. Propagation delay is the amount of time it takes for the head of the signal to travel from the sender to the receiver over a medium. (電子訊號在網路線上傳遞，由傳送端到接收端所花時間)

3. Processing delay is the time it takes routers to process the packet header. Processing delay is a key component in network delay.
During processing of a packet, routers may check for bit-level errors in the packet that occurred during transmission as well as determining where the packet's next destination is. Processing delays in high-speed routers are typically on the order of microseconds or less. After this nodal processing, the router directs the packet to the queue where further delay can happen (queuing delay).

4. Queuing delay is the time a job waits in a queue until it can be executed. (影響甚鉅，Router 無法將封包馬上送到網路上，在 Queue 中等待的時間)