Host A sends a 1500-byte packet to Host B.
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- We send real-time voice from Host A to Host B over a packet-switched network (VolP). Host A converts analog voice to a disital 64 Kbps bitstream on the fly then groups the bits into 64-byte packets. As soon as Host A gathers a packet, it sends it to Host R (Obviously a data packet must be generated first before any bit inside it can be transmitted). There is one link between Hosts A and B; its transmission rate is 10 Mbps and its propagation delay is 10 msec. As soon as Host B receives an entire packet, it converts the packet's bits to an analog signal How much time (in milliseconds) elapses from the time a bit is created from the original analog signal at Host A) until the bis arrived at Host B and gets decodedas part of the analog signal at Host B)? Hint Calculate the time to generate a packet of 648 time to transmit this packettime to propagate Your aewwer should only contain umbers rounded to the hundredth (For example 123 S) PrviousConsider sending real-time voice from Host A to Host B over a packet-switched network (VolP). Host A converts analog voice to a digital 64 kbps bit stream on the fly. Host A then groups the bits into 56-byte packets. There is one link between Hosts A and B; its transmission rate is 2 Mbps and its propagation delay is 10 msec. As soon as Host A gathers a packet, it sends it to Host B. As soon as Host B receives an entire packet, it coverts the packet's bits to an analog signal. How much time elapses from the time a bit is created (from the original analog signal at Host A) until the bit is decoded (as part of the analog signal at Host B)?A packet switch receives a packet and determines the outbound link to which the packet should be forwarded. When the packet arrives, one other packet is halfway done being transmitted on this outbound link and four other packets are waiting to be transmitted. Packets are transmitted in order of arrival. Suppose all packets are 1,200 bytes and the link rate is 2 Mbps. What is the queuing delay for the packet? More generally, what is the queuing delay when all packets have length L, the transmission rate is R, x bits of the currently-being-transmitted packet have been transmitted, and n packets are already in the queue?
- Consider two systems P and Q connected via a router R with the bandwidth of 2 Gbps. The length of the packet is 1000 bytes. The propagation delay between P and Q is 200 microseconds. The distance between the P and R is 10 km while the distance between R and Q is 5 km. The propagation speed in meter per second if each link is having the same 10³ km/s? propagation speed isConsider a two-link network in which Host A has a 1 Mbps connection with a 10 ms propagation delay and the router has a 15 Mbps link with a 25 ms propagation delay. Host A sends Host B a 1500-byte packet. What is the packet transmission delay from the router to Host B (in milliseconds)?Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered 0 through 3, and packets are to be forwarded to the link interfaces as follows: Destination Address Range Link Interface 11100000 00000000 00000000 00000000 through 11100000 00111111 1111111 11111111 11100000 01000000 00000000 00000000 through 11100000 01000000 1111111111111111 11100000 01000001 00000000 00000000 through 11100001 01111111 11111111 11111111 otherwise 0 1 2 3 a. Provide a forwarding table that has five entries, uses longest prefix matching, and forwards packets to the correct link interfaces.
- 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?A sender with window size (W=3) is connected to a selective repeat receiver by a link with bandwidth =106 bytes/second and propagation delay of 0.25 msec. The receiver sends Positive ACK for correctly received packets. For each packet sent, the sender sets a timer with time out value of 5 msec. On receiving an ack for a packet, the timer for that packet is cancelled. If the timer expires, that packet is retransmitted immediately. Assume that the sender sends packets 1, 2, and 3 (at t=0, packet size =1000 Bytes) and packet 2 is lost. NO other packet is lost. Under this scheme , at what time in msec would all the packets been received at the receiver.Consider a datagram network in which a packet travels through two switches S1 and S2 from source to destination. Packet experiences wait at each switch before it is forwarded. Transmission time, propagation time and wait time at each node is 3 ms, 1.5 ms, and 0.25 ms respectively. Find the total delay.
- 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 isConsider two hosts, A and B that are connected by a transmissions link of2.1 Mbps. Assume that packets are of length 2.0 Kb (Kilobits) and the length of the link is 100Km. a. What is the propagation delay from A to B, that is the amount of time from when the first bit of the packet is transmitted at A, until it is received at B? b. What is the transmission time of the packet at A (the time from when the first bit of the packet is sent into the wire and the time at which the last bit is sent into the wire). c. Suppose now that that length of the link is doubled. What is the propagation delay from A to B now and what is the transmission time? d. Now suppose that node C is connected to node B also by a 2 Mbps, 100 Km link. How long does it take from when the first bit is transmitted by A to when the last bit is received at C, assuming B operates in a store-and -forward manner?Consider a network with a ring topology, link bandwidths of 100 Mbps, and propagation speed 2 × 108 m/s. What would the circumference of the loop be to exactly contain one 1500-byte packet, assuming nodes do not introduce delay? What would the circumference be if there was a node every 100 m, and each node introduced 10 bits of delay?