Description
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In the following figure, four PCs (with indices 1, 2, 3, and 4) are connected through two bus-topology local area networks (LANs). The address configuration is also shown in the figure, where a capital-case letter means an IP address and a number means a physical address. Any data frame in the network has the following format:
Assume a process with port address ‘a’ on PC 2 sends a message to a process with port address ‘b’ on PC 3. In the following table, please indicate the source & destination addresses used in the header of Layers 2, 3, and 4, for the data frame from PC 2 to the router and the data frame from the router to PC 3. (6 points)
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Data frame from PC 2 to the router
Data frame from the router to PC 3
Source address Destination address
Source address Destination address
Layer 2 header
Layer 3 header
Layer 4 header
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What is the minimum Hamming distance for the following cases: i) detection of up to six bit errors; ii) correction of up to six bit errors? (2 points)
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How many bit errors can be detected and how many bit errors can be corrected if the minimum Hamming distance is i) 10; ii) 11? (4 points)
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Using the code In Table 10.2 on Slide 21 of Lecture 3, indicate the decoded dataword if one of the following codewords is received: a) 10101; b) 11010; c) 00011; d) 11011. Please show your steps. (8 points)