Delays, throughput, and packet loss Flashcards
A ___ is basically an instance of communication between 2 hosts/nodes
hop
What is the queuing delay?
The time the packet resides in the queue before being processed
The ______ delay is analyzed using _______ methods and is rarely included in calculations
queuing, statistical
The _______ delay is the time it takes for a packets header to be analyzed and its content to be checked for bit level errors
processing
What is the transmission delay?
The time it takes for all L bits in the packet to be inserted into the transmission medium. L/(Bits per second) is the rate.
The ___________ delay is the time taken by each bit to travel the distance d from the source to the destination. How is it calculated?
propagation, d/v
What are the 2 reasons as to why packets may be lost
- The queue is full
- The packet is corrupted
The transmission delay total is calculated with …
header + (data/N_packets)
What is the delay for a single packet at each node?
d_proc + d_prop + (d_data + d_head) + d_queue
Ignore the queuing delay
What would be the delay for a single packet between the source and the receiver (end to end)
The delay for the packer at each node * N_transmissions
With packet switching:
- _____ is increased
- The _____ of waiting for each packet to arrive is reduced
- The amount of data needed to be _____ is reduced if a packet lost
overhead, delay, resent
Increasing the number of ______ increase _____ up to a certain point. Then the _____ starts becoming a problem.
packets, efficiency, header
What is the generalized end-to-end delay with packet switching?
[d_proc + (d_data + d_head)] * [N_trans + (N_packets - 1)] + [d_prop * N_trans]
In circuit switching, what does the overhead consist of?
Establishing and breaking the connection between sender and receiver
__________ throughput is the amount of data that can pass through from one edge system to another
end-to-end
