Create a class called Quiz. This class manages up to 25 Question objects (create at least 10). Attached below is the Question interface, which your questions must implement. Define two methods in Quiz: public void addQuestion(Question q) - This accepts a question object and adds it to it's list of questions public double giveQuiz() - This presents each question, one by one, to the user and asks for their answer. After each answer, it checks if the answer is correct and keeps track of the results. Finally, it returns the score the user got. Create at least 3 classes that implement Question. You have some freedom in choosing the exact types, but I suggest: MultipleChoiceQuestion TrueFalseQuestion ShortAnswerQuestion Again, each question class MUST implement the Question interface. Implement these methods appropriately for the question type. DO NOT MODIFY THE QUESTION INTERFACE IN ANY WAY. Create a new class called QuizTime, which only has a main() method. In this method, create all of your Question objects and a single Quiz object. Add all of your questions to the quiz, then call giveQuiz() and print out the results to the user. Follow ALL of our rules of encapsulation and proper project design For extra credit, after the quiz is over go through each of the wrongly answered questions and printout the question followed by the correct answer.

1. the program must provide following functions to extract some statistics. note that the data_list parameter specified in these functions may be the same for all functions or different for different functions—that is your choice. a skeleton file is provided on mirmir. a) open_file()prompts the user to enter a year number for the data file. the program will check whether the year is between 1990 and 2015 (both inclusive). if year number is valid, the program will try to open data file with file name ‘year.txt’, where is the year. appropriate error message should be shown if the data file cannot be opened or if the year number is invalid. this function will loop until it receives proper input and successfully opens the file. it returns a file pointer and year. i. hint: use string concatenation to construct the file name b) read_file(fp)has one parameter, a file pointer read. this function returns a list of your choosing containing data you need for other parts of this project. c) find_average(data_list) takes a list of data (of some organization of your choosing) and returns the average salary. the function does not print anything. hints: i. this is not the average of the last column of data. it is not mathematically valid to find an average by finding the average of averages—for example, in this case there are many more in the lowest category than in the highest category. ii. how many wage earners are considered in finding the average (denominator)

Why should characters such as / \ " ' * ; - ? [ ] ( ) ~ ! $ { } < > # @ & | space, tab, and newline be avoided in file names?

Anetwork security application that prevents access between a private and trusted network and other untrusted networks