How the inefficiency of stop and wait protocol is overcome in sliding window protocol?

How the inefficiency of stop and wait protocol is overcome in sliding window protocol?

8. How the inefficiency of Stop-and-Wait protocol is overcome in sliding window protocol? Ans: The Stop-and-Wait protocol is inefficient when large numbers of small packets are send by the transmitter since the transmitter has to wait for the acknowledgement of each individual packet before sending the next one.

What is the efficiency of stop and wait 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 sliding window flow control compared to stop and wait flow control?

1 – What is the advantage of sliding-window flow control compared to stop-and- wait flow control? The stop-and-wait approach requires acknowledgements after each frame. The sliding-window flow control technique can send multiple frames before waiting for an acknowledgement.

What are the issues of stop and wait protocol how selective repeat protocol resolves issues of stop and wait protocol?

The above 3 problems are resolved by Stop and Wait for ARQ (Automatic Repeat Request) that does both error control and flow control.

• Time Out:
• Sequence Number (Data)
• Delayed Acknowledgement: This is resolved by introducing sequence numbers for acknowledgement also.

What is stop and wait protocol explain stop and wait protocol in details?

From Wikipedia, the free encyclopedia. Stop-and-wait ARQ, also referred to as alternating bit protocol, is a method in telecommunications to send information between two connected devices. It ensures that information is not lost due to dropped packets and that packets are received in the correct order.

How stop and wait ARQ protocol differ from simple stop and wait protocol?

Working of Stop & Wait ARQ is almost like Stop & Wait protocol, the only difference is that it includes some additional components, which are:

1. Time out timer.
2. Sequence numbers for data packets.
3. Sequence numbers for feedbacks.

Why is stop and wait protocol inefficient?

Stop-and-wait ARQ is inefficient compared to other ARQs, because the time between packets, if the ACK and the data are received successfully, is twice the transit time (assuming the turnaround time can be zero). The throughput on the channel is a fraction of what it could be.

What is efficiency of a protocol?

So, the number of packets actually delivered in a given amount of time will average the number of packets sent divided by (1)/(1-p). The efficiency of the protocol will be this number divided by the number of packets sent. Therefore, the efficiency will be (1-p).

Why is stop and wait ARQ inefficient?

Why Sliding window protocol is better than stop and wait protocol explain?

In Stop and Wait protocol, sender sends single frame and waits for acknowledgment from the receiver. In Sliding window protocol, sender sends multiple frames at a time and retransmits the damamged frames. Stop and Wait protocol is less efficient. Sliding Window protocol is more efficient than Stop and Wait protocol.

What is the drawback of stop and wait protocol what would be the solution?

Simple Reliable Transmission: 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.

Why is stop and wait protocol inefficient for satellite links?

Stop-and-wait ARQ is inefficient compared to other ARQs, because the time between packets, if the ACK and the data are received successfully, is twice the transit time (assuming the turnaround time can be zero).

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

Following are some of the important differences between Stop and Wait protocol and Sliding Window protocol. In Stop and Wait protocol, Sender window size is 1. In Stop and Wait protocol, Receiver window size is 1. In GoBackN protocol, Receiver window size is 1. In Stop and Wait protocol, Minimum Sequence Number is 2.

What is the difference between gobackn protocol and stop and Wait protocol?

In GoBackN protocol, Acknowledgement type is cumulative. In Selective Repeat protocol, Acknowledgement type is individual. In Stop and Wait protocol, no specific order is needed at receiver end. In GoBackN protocol, in-order delivery only are accepted at receiver end.

How can the efficiency of stop and wait ARQ be improved?

The efficiency of stop and wait ARQ can be improved by increasing the window size. This allows the sender to keep more than one unacknowledged frame in its window. Thus, sender can send frames in the waiting time too. This gives rise to the concept of sliding window protocols. Get more notes and other study material of Computer Networks.

What is the difference between Selective Repeat and stop and Wait protocol?

In Selective Repeat protocol, Efficiency formular is N/ (1+2*a) where a is ratio of propagation delay vs transmission delay and N is number of packets sent. In Stop and Wait protocol, Acknowledgement type is individual.