Computers and Technology, 23.06.2020 23:01, emilyanneK2540
When all the input has been read, your program should produce a summary report that includes a list of all the tokens that appeared in the input, the number of times each token appears in the input and the class of each token. Your program should also list how many times tokens of each category appeared in the input. The token format: keyword -> if | then | else | begin | end identifier -> character | character identifier integer -> digit | digit integer real -> integer. integer special -> ( | ) | [ | ] | + | - | = | , | ; digit -> 0|1|2|3|4|5|6|7|8|9 character -> a|b|c ... |z|A|B|C ... |Z
Answers: 2
Computers and Technology, 22.06.2019 16:50, Tyrant4life
Consider a slotted aloha system, where the time slot equals the fixed duration of each packet. assume that there are 4 stations a, b,c, d sharing the medium. (a) stations a, b,c, d receive one packet each from higher layers at times 1.3, 1.5, 2.6,5.7 respectively. show which transmissions take place when, according to the slottedaloha protocol; describe all transmissions until all four packets have been successful. when needed, each station has access to the following sequence of random number, provided by a random number generator and drawn uniformly between 0 and 1: (1) station a draws numbers: 0.31, 0.27, 0.78, 0.9, 0.9, 0.11, 0. (2) station b draws numbers: 0.45, 0.28, 0.11, 0.83, 0.37, 0.22, 0. (3)station c draws numbers: 0.1, 0.2, 0.3, 0.4, 0. (4) station d draws numbers: 0.36, 0.77, 0.9, 0.1, 0.1, 0.1, 0.1, 0. (b) in slotted aloha, a station transmits in each time slot with a given probability. what probabilities would you assign to each of the four stations so as to: (i) maximize the efficiency of the protocol? (ii) maximize fairness among the four stations? (c) will the efficiency increase or decrease if we modify slotted aloha as follows: (i) get rid of slots and allow stations to transmit immediately? (ii) implement carrier sensing? (iii) implement collision detection? (iv) implement collision avoidance?
Answers: 3
Computers and Technology, 22.06.2019 23:30, TheBurntToast
What is the digital revolution and how did it change society? what are the benefits of digital media?
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Computers and Technology, 24.06.2019 00:00, BluedragonKBT44
The gene form of a trait is called a(n)
Answers: 2
When all the input has been read, your program should produce a summary report that includes a list...
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