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- Let the two host X and Y connected via a packet switch with 107 bits per second links. Switch is placed at 50 km from X. X and Y are located at 100 Kilometer apart also the propagation speed along the link is 2 × 108 m/s. The switch begins forwarding a packet after 0.1 milliseconds it receives the packet. If 1000 bytes of File are needed to be transmitted and each packet size is 500 bytes, the time elapsed between the transmission of the first bit of data and the reception of the last bit of the data in millisecond isA link has a transmission speed of 1010 bits/sec. It uses data packets of size 2000 bytes each. The efficiency of the stop-and-wait protocol in this setup is exactly 30%. Determine the value of the one-way propagation delay in milliseconds. Assume that the acknowledgement has negligibletransmission delay, and its propagation delay is the same as the data propagation delay. Consider the same transmission speed and packet size for Go back-N protocol with window size 8 and find the channel utilization.In selective repeat ARQ, packet size is 2000 bytes transmission time for one packet is 1ms. If distance between hosts is 10km and signal speed is 4ms per km (4ms/km) and frame sequence number are 6 bit long in frame format then the throughput (in Mbps) is
- A link has a transmission speed of 106 bits/sec. It uses data packets of size 1000 bytes each. Assume that the acknowledgment has negligible transmission delay, and that its propagation delay is the same as the data propagation delay. Also assume that the processing delays at nodes are negligible. The efficiency of the stop- and-wait protocol in this setup is exactly 25%. The value of the one-way propagation delay (in milliseconds) isConsider a network connecting two systems located 4000 kilometers apart. The bandwidth of the network is 500 x Mbps. The propagation speed of the media is 4 × 106 meters per second. It is needed to design a Go-Back-N sliding window protocol for this network. The average packet size is 107 bits. The network is to be used to its full capacity. Assume that processing delays at nodes are negligible. What is the minimum size in bits of the sequence number field?PLZ AS FAST AS POSSIBLE I WANT THE SOLUTION OF THIS QUESTION A pipeline protocol is used between a sender and a receiver. The sender wants to send 6 packets with a rate 1packet/1ms. The propagation time is 3 ms for any packet and the time out is 8 ms. The time for processing packet and the transmission time are negligible. Assume that Selective Repeat is used, window size is 3 and the packet with sequence number 2 is lost (start sequence number from 0) a. Fill up the below figure with information about sending packet from sender to receiver and ACK packet in reverse direction. b. Calculate the total time required in c. order the receiver receives the 6 packets correctly. Specify the number of data packets and acknowledgments sent and sequence number of data packets and acknowledgments. Receiver H Sender Ims
- Consider the Go-Back-N (GBN) and Selective Repeat (SR) protocols with a sender window size of 4 and a sequence number range of 1024. For each of these protocols, describe what happens if only the ACKs of the first and last packets, in the sender window size, reached the destination.Protocol 6's frame arrival code includes a part for NAKs.If the incoming frame is a NAK and another condition is satisfied, this section is called.Give an example of a situation in which the existence of this other condition is critical.A TCP message of 19.2KBytes is sent in a network system with a 1000Byte MTU. Source and destination are 7 hops apart. The distance between hops is 250 km. Each router has a processing delay of 1000nSec (nano seconds). The throughput in the network is 10Gbps except for the device in the last hop which only has a throughput of 5Gbs. Find the end-to-end latency in the system considering this is a Packet Switched network. Consider each packet has 40Bytes of header overhead. The speed and light for this problem will be 200,000 km/s.
- Host A is sending data to host Bover a full duplex link. A and B are using the sliding window protocol for flow control. The send and receive window sizes are 5 packets each. Data packets (sent only from A to B) are all 1000 bytes long and the transmission time for such a packet is 50 µs. Acknowledgment packets (sent only from B to A) are very small and require negligible transmission time. The propagation delay over the link is 200 µs. What is the maximum achievable throughput in this communication?Consider sending real-time data from Host A to Host B over a packet-switched network. Host A takes an 8-bit measurement every millisecond, and Host A collects these into 64-byte packets. There is one link between Hosts A and B; its transmission rate is 5 Mbps, its propagation delay is 2 × 108 meters/sec, and its length is 3 km. As soon as Host A gathers a packet, it sends the packet to Host B. How much time elapses from the time that Host A begins to take the first measurement in a packet until the entire packet reaches Host B?In a two-phase, total-order multicast system, messages are sent in the following sequence from node S to G1 and G2. G1 and G2 are the members of the group. S sends m1 to G1 S sends m1 to G2 S sends m2 to G2 S sends m2 to G1 Use the basic implementation of the Lamport clock. The clock s at each node start at: S: 4, G1: 6, G2: 1. Show the exchange of messages and their acknowledgments in a clock diagram using the basic implementation of Lamport's clock. In which order and at what times are m1 and m2 delivered?
