What is throughput in stop and wait protocol?

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What is throughput in stop and wait protocol?

Throughput. The number of bits that a receiver can accept in total time duration (i.e. transmission time(Td) + 2 * propagation delay(Tp)). It is also called effective bandwidth or bandwidth utilization. In Stop and Wait, in the total duration, the receiver can accept only one frame.

What are the issues of stop and wait protocol?

Disadvantages of Stop and Wait protocol

  • Problems occur due to lost data. Suppose the sender sends the data and the data is lost.
  • Problems occur due to lost acknowledgment. Suppose the sender sends the data and it has also been received by the receiver.
  • Problem due to the delayed data or acknowledgment.
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What is the main disadvantage of stop and wait protocol?

disadvantages of stop-and-wait: fairly slow: the sender can send at most one new packet per RTT. not robust: if the ack can get lost, when the receiver gets a packet, the receiver cannot tell if it is a retransmission or a new packet.

How is network efficiency calculated?

The amount of data retransmitted per flowthe network traffic between network objects is used to calculate the Network Efficiency metric.

  1. Efficiency = 100\% * (transferred – retransmitted) / transferred.
  2. Network Loss = 100 – Efficiency.

What is the difference between stop-and-wait and wait ARQ?

Working of Stop & Wait ARQ is almost like Stop & Wait protocol, the only difference is that it includes some additional components, which are: Time out timer. Sequence numbers for data packets. Sequence numbers for feedbacks.

How does simple stop and wait protocol works?

In this, the sender will transmit one frame at a time to the receiver. The sender will stop and wait for the acknowledgement from the receiver. This time (i.e. the time joining message transmitting and acknowledgement receiving) is the sender’s waiting time, and the sender is idle during this time.

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What is computer network efficiency?

In network science, the efficiency of a network is a measure of how efficiently it exchanges information and it is also called communication efficiency. The underlying idea (and main assumption) is that the more distant two nodes are in the network, the less efficient their communication will be.

How does simple stop-and-wait protocol works?

How many Acknowledgements are needed for a stop-and-wait flow control for N data packets sent?

For stop-and-wait flow control, for n data packets sent, how many acknowledgments are needed? Explanation : For stop-and-wait flow control for n data packets sent, in acknowledgements are needed.

What are the advantages and disadvantages of stop and Wait protocol?

Stop and Wait is a flow control protocol. In which the sender sends one packet and waits for the receiver to acknowledge and then it will send the next packet. In case if the acknowledgment is not received, the sender will retransmit the packet. This is the simplest one and easy to implement. but the main disadvantage is the efficiency is very low.

What is the advantage of stop and wait over Wan?

Receiver will keep waiting for another data packet for infinite time. Stop and Wait protocol performs better for LANs than WANs. Efficiency of the protocol is inversely proportional to the distance between sender and receiver. So, the protocol performs better where the distance between sender and receiver is less.

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What is the difference between stop and wait and sliding window protocol?

The stop & wait protocol is half-duplex whereas sliding window protocol is full-duplex. The sender node sends a data packet to the receiver node. Then, waits for the feedback of the transmitted packet. As soon as the receiver node receives a data packet it starts processing it.

How to improve the efficiency of stop & wait ARQ?

The Stop & Wait ARQ is very less efficient because the sender window size is 1, which allows the sender to keep only one frame without feedback. So, the sender sends a data packet and waits for the feedback, and it gets the feedback it sends another data packet. In order to improve efficiency, we can increase the window size on both ends.