Correct option is C
In packet switching, several types of delays can occur as packets travel through the network:
Queuing Delay:
This delay occurs when packets wait in a queue before being processed or transmitted. Queuing delays happen when the network is congested, and the router or switch has to hold packets until it can forward them to the next hop.
Transmission Delay:
Transmission delay is the time taken to push all the packet’s bits onto the link. It depends on the packet's size and the transmission rate of the link.
Transmission delay is calculated as Packet Size/Transmission Rate.
Processing Delay:
Processing delay is the time it takes for a router or switch to process the packet header, check for errors, and determine the next hop for the packet. This delay is typically very small but can accumulate as a packet traverses multiple routers.
