Write a program that allows you to create a file of customers for a company. the first part of the program should create an empty file suitable for writing a three-digit id number, six-character last name, and five-digit zip code for each customer. the second half of the program accepts user input to populate the file. for this exercise, assume that the user will correctly enter id numbers and zip codes, but force the customer name to seven characters if it is too long or too short. issue an error message, and do not save the records if the user tries to save a record with an id number that has already been used. save the program as createcustomerfile. java.

What machine listens for http requests to come in to a website’s domain? a. a router b. a browser c. a server d. a uniform resource locator

Which of the following is not an enhancement to the standard wiki to make it more attractive for corporations? encryptionwork spacespermission toolspredictive text

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?