(a) The transmission time of a bit or group of bits is sometimes referred to as their "width" on the line. What is the width of an L-frame on a LAN link? (b) How wide is an L-frame (as embedded inside larger frames) on a MAN link?
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- Frames of 1000 bits are sent over a 106 bps duplex link between two hosts. The propagation time is 25 ms. Frames are to be transmitted into this link to maximally pack them in transit (within the link). 1.1 What is the minimum number of bits (1) that will be required to represent the sequence numbers distinctly? Assume that no time gap needs to be given between transmission of two frames.4. In this problem, you will derive the efficiency of a CSMA/CD-like multiple access protocol. In this protocol, time is slotted and all adapters are synchronized to the slots. Unlike slotted ALOHA, however, the length of a slot (in seconds) is much less than a frame time (the time to transmit a frame). Let S be the length of a slot. Suppose all frames are of2. Consider a bus-topology network with five stations. A reservation access method is used. Each station has infinite data to transmit. Each reservation slot has 10 microseconds (note that 1 microsecond = 106 second). For each station, one data transmission sends 1000 bits. The transmission rate over the medium is 10 Mbps. For a station, which is its throughput (in unit "Mbps")?
- Suppose you are hired to design a reliable byte-stream protocol that uses a sliding window (like TCP). This protocol will run over a 50-Mbps network, the RTT of the network is 80 ms and the maximum segment lifetime is 60 seconds. How many bits would you include in the Advertised Window and Sequence Num fields of your protocol header?3.4-8 Channel utilization with pipelining. Suppose a packet is 10K bits long, the channel transmission rate connecting a sender and receiver is 10 Mbps, and the round-trip propagation delay is 10 ms. What is the channel utilization of a pipelined protocol with an arbitrarily high level of pipelining for this channel?A frame containing http request is sent from Computer (A) [in whichever subnet it is now, make sure to show it in your figure], to the access point it is associated with. Draw the address fields (1, 2, and 3) of the frame travelling from Computer A to AP and the source and destination addresses of the frame travelling from AP to R1. The MAC addresses of AP1, AP2, and AP3 are M1, M2, and M3 respectively, and the Router R1’s MAC address connected to this Switch/AP is MRA. IP address values are already given, and the port addresses could also be used as given. The Router’s MAC address facing WAN side is MRW.
- The following character encoding is used in a data link protocol: A: 01000111; B: 11100011; FLAG: 01111110; ESC: 11100000 Show the bit sequence transmitted in binary for the four character frame: A B ESC FLAG when each of the following framing methods is used: a) Character count b) Flag bytes with byte stuffing c) Starting and ending flag bytes, with bit stuffing. Please solve within 30 minutes. Asap.Consider a datagram network using 8-bit host addresses. Suppose a router uses longest prefix matching and has the following forwarding table: (refer to image) For each of the four interfaces, give the associated range of destination host addresses and the number of addresses in the range.The following bit stream : 0111110001010011111111100101111111111110 represents data that needs to be framed by the link layer on the sender’s side. Derive the resultant bit stream by adding necessary flag bits and performing bits stuffing. assume that the link layer uses the flag bits with bit stuffing approach for framing, with the following details: The beginning and end of a data frame are indicated by the special flag bits 01111110 (i.e., 0x7E). To handle accidental occurrence of the flag bits within the data, a 0 bit is stuffed every time 5 consecutive 1s are found in the data. For simplicity, assume that no other header/trailer information is added to the data. I got this answer below but it is wrong. 0111111001111100001010011111011110010111110111111011001111110
- Computer Science A Go-Back-N (GBN) ARQ scheme has been designed with window-size W = 10 such that it is fully efficient when there are no errors on the channel. Assume that frame size is 20000 bits and the overhead bits are negligible. What is the bit probability error (as seen at Layer 2) that makes the Go-Back-N ARQ 50% efficient?Networking question: Consider the following bit stream-a. 00000000 b. 11111111 c. 01010101 d. 00110011 Draw the graph of the i. differential Manchester scheme using each of the given data streams, assuming that the last signal level has been positive. From thegraphs, guess the bandwidth for this scheme using the average number of changes in the signal level.Problem 3 Consider the problem of deciding whether to implement a virtual- circuit or a datagram network. Assume a network protocol that allows the system to operate as either a virtual circuit network or a datagram network. That is, its packet header format is specified such that it incorporates both a VCI (Virtual Circuit Identifier) and an arbitrary source/destination addresses. When operating as a virtual circuit, it requires a 4-byte header. When operating as a datagram network, it requires a 40-byte header. Assume that there are 4 hops from source to destination, and that a set up or tear down request packet is 80 bytes (including the header). The total message length is 4096 bytes, the data rate is 9600 bps on all links and the packet size is 256 bytes (including the header). i) If we operate in the datagram mode, how long does it take for the first packet to reach the destination? If we operate in virtual-circuit mode, how long does it take for the first packet to reach the…