Read the following specification.The character in column 1 should be either A or B and in the column 2 should be a digit. If bothcolumns contain appropriate values then update is made. If the input of column 1 is incorrect, i.e.neither A nor B, then message X will be displayed. If the input in column 2 is incorrect, i.e. input is nota digit, then message Y will be displayed.A file must be updated, if the character in the first column is either "A" or "B" and in the secondcolumn it should be a digit.If the value in the first column is incorrect (the character is neither A nor B) then massage X will bedisplayed.If the value in the second column is incorrect (the character is not a digit) then massage Y will bedisplayed.Draw a Cause-Effect graph for the above situation and generate test cases through the correspondingdecision table.

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Answered: Read the following specification. The…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Summary.py: A student roster file roster1.dat has these fields: name, major, gpa, credits Write a file roster1.out with these new fields: major, avgGpa, avgCredits, count where avgGpa is the average GPA for students in that major, avgCredits is the average number of credits for students in that major, and count is the number of students in that major.
Answer the given question with a proper explanation and step-by-step solution. Write a function named file_sum that takes as a parameter the name of a text file that contains a list of numbers, one to a line, like this:```23.7711694-12.8014.999```The function should sum the values in the file and write the sum (just that number) to a text file named sum.txt.The file must be named: **file_sum.py**
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Question 4: Complete the below function that takes a file name and a list as arguments and reads the text within the corresponding file, then creates a dictionary whose keys are the characters of the provided list, and the values are the counts of these characters within the text. If a character in the list is not included in the text, "0" should be written in the dictionary as the value of this character. The function returns the created dictionary as a result. If the file does not exist, then the function returns an empty dictionary. Here is an example case, assuming a file named "sample.txt" exists with the following content: sample.txt This is an example sentence. This is yet another sentence. ----. >> text2dict("sample.txt", ['a', 'b', 'c', 't']) {'a':3, 'b':0, 'c':2, 't':4} def text2dict(filename, characters):
Assignment 2 will require Array of records (structs) with file I/O is needed. the program will read its data from a text file named coins.txt. There can be 0 and up to 10 input lines, each line is formatted like the example below; Jane 30 cents in AU$ Joe 85 cents in EUR Jane 15 cents in US$ Names are one-word strings. The same name can be repeated in the data file but the coin values/currencies can be different. If the name is the same, your program must assume it relates to the same individual. You are asked to write a program that reads the data from this file. For each individual, the program must add up the coin amounts that belong to the same currency to obtain a total amount for that individual in that currency. It needs to compute the change to be given for that individual for each currency that individual owns. e.g, the example above shows Jane has 30 + 25 = 55 cents in AU$ and 15 cents in US$. The program needs to calculate how many coins (hereinafter referred to as change)…

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