Which of the following is true about collisions? a. They can only happen with switches. b. They are a problem with Token Ring networks. I c. They can occur on Ethernet half-duplex networks. d. Fewer computers mean more collisions.
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- Is that so, or not? Consider a TCP connection where the most recent SampleRTT was 1 second. It is recommended that the TimeoutInterval be set to more than one second.Write a program to simulate the behavior of the CSMA/CD protocol over Ethernet when ther are N stations ready to transmit while a frame is being transmitted. Your program should report the times when each station successfully starts sending its frame. Assume that a clock tick occurs every slot time (51.2 microsec) and a collison detection and sending of a jamming sequence takes one slot time. All frames are the maximum length allowed.Is it the case or not? Consider a TCP connection where the most recent SampleRTT was 1 second. The current TimeoutInterval setting for the connection must be larger than one second.
- Assume that there is a shared connection (for example, an Ethernet bus) with a speed of 1 Mbps. How much time (in microseconds) is required to send a frame with a length of 1000 bits over this link?Imagine for a moment that the desktop of your computer is completely covered with FIN WAIT 1 TCP connections, and that you have a large number of these connections. Is there a certain outcome that is more likely to take place than the others? Who precisely is to blame for this situation?Do you agree with the following statements? Justify your answer. i) Compared to circuit switching, packet switching is more suitable for mobile networks. Compared to the token-passing protocol, the polling protocol is more suitable for mobile networks. ii) i) The current window size is cwnd = 24 and ssthresh = 6. Suppose, a triple duplicate ACK occurs. Using TCP Reno, the updated values are cwnd = 1 and the threshold ssthresh = 1. iv) The current window size is cwnd = 24 and ssthresh = 6. Suppose, a triple duplicate ACK occurs. Using TCP Tahoe, the updated values are cwnd = 12 and the threshold ssthresh = 1.
- 9. On a spanning tree protocol-enabled switch, G0/0/17 and G0/0/18 have the same priority and are connected using an Ethernet cable. Which of the following statements is true? OA. GO/0/18 is blocked. B. G0/0/17 is blocked. OC. GO/0/17 stays in learning state. D. The two ports are blocked.Is it the case or not? Consider a TCP connection where the most recent SampleRTT was 1 second. Current TimeoutInterval value for the connection must be larger than one second.Your company is building a computer network, and you are asked to develop a scheme for dealing with the deadlock problem. A. Would you use a deadlock-detection scheme or a deadlock prevention scheme? B. If you were to use a deadlock-prevention scheme, which one would you use? Explain your choice. C. If you were to use a deadlock-detection scheme, which one would you use? Explain your choice.
- For NAT Network Address Translation Scenario: Jenny Bello is a small business owner selling and making customized computer peripherals. She has been finding it difficult to track her sales and inventories, however recently after an expert's advice, she adopted a Point of Sale (PoS) server. So, she can now track her sales and inventories at the store. However, she ran into another issue, the server can only be accessed within the store, because it has been assigned a private IPv4 address, it is not publicly accessible via the Internet. a) Why is not having the PoS server accessible over the Internet a problem for the business? b) What caused this problem? c) Propose a solution for the problem and explain how the solution works.Data collision occurs when multiple senders simultaneously attempt to access the communication medium. Various protocols have been developed to mitigate this issue. These protocols operate at different layers of the network stack. Could you please provide more specific information about the protocols you are interested in? Do these methods ensure reliable gearbox without any possibility of collisions? What alternative solutions are available if this approach proves ineffective?As another example, consider a circuit-switched network that connects computers in two remote offices of a private company. The offices are connected using a T-1 line leased from a communication service provider. There are two 4 × 8 (4 inputs and 8 outputs) switches in this network. For each switch, four output ports are folded into the input ports to allow communication between computers in the same office. Four other output ports allow communication between the two offices. Figure shows the situation