What is queuing delay

The delays, here, means the time for which the processing of a particular packet takes place. We have the following types of delays in computer networks: 

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Transmission Delay: 
The time taken to transmit a packet from the host to the transmission medium is called Transmission delay. 

For example, if bandwidth is 1 bps (every second 1 bit can be transmitted onto the transmission medium) and data size is 20 bits then what is the transmission delay?

Transmission delay vs propagation delay

If in one second, 1 bit can be transmitted. To transmit 20 bits, 20 seconds would be required. 

Let B bps is the bandwidth and L bit is the size of the data then transmission delay is, 

This delay depends upon the following factors:

• If there are multiple active sessions, the delay will become significant.

• Increasing bandwidth decreases transmission delay.
• MAC protocol largely influences the delay if the link is shared among multiple devices.
• Sending and receiving a packet involves a context switch in the operating system, which takes a finite time.

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