Joe wanted to enter the data center but does not have access. he put his hand in the palm scanner and the system allows him access. this is an example of: true positive false negative true negative false positive

Which computer tools allow you to communicate with coworkers, family,and friends

Select all that apply. select all functions of an operating system. displays a gui. allows you to multitask. allows you to use the software that you want to use. allows you to edit images. coordinates the interaction of hardware and software. defrags the hard drive. allocates the computer's resources. saves data. retrieves files. keeps confidential documents secure. copies information from one document to another.

Write an application that allows a user to enter the names and birthdates of up to 10 friends. continue to prompt the user for names and birthdates until the user enters the sentinel value “zzz” for a name or has entered 10 names, whichever comes first. when the user is finished entering names, produce a count of how many names were entered, and then display the names. in a loop, continuously ask the user to type one of the names and display the corresponding birthdate or an error message if the name has not been previously entered. the loop continues until the user enters “zzz” for a name. save the application as birthdayreminder.java.