What is the order of elements that are contained in a stack after the following operations are performed. myStack. push(new Integer(8)); myStack. push(new Integer(6)); Integer num1 = myStack. pop(); myStack. push(new Integer(3)); myStack. push(new Integer(4)); myStack. push(new Integer(15)); myStack. push(new Integer(12)); myStack. push(new Integer(9)); myStack. pop(); myStack. pop(); myStack. pop(); myStack. push(new Integer(19)); The resulting stack (from bottom to top) is:

Which of the following is a way the operating system prevents unknown or unauthorized users from accessing the system?

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)

You begin your first day of responsibilities by examining the recent is security breach at gearup to get ideas for safeguards you will take. at gearup, criminals accessed the company's improperly-secured wireless system and stole customers' credit card information as well as employee social security numbers. what kind of computer crime did gearup face?