Anetwork has n subscribers. each subscriber is connected directly to all other subscribers.
(a) what is the total number of lineslin the network? (b) what is the value oflforn= 2, 10, 100, and 1,000? (c) how many lines must be built to each subscriber? (d) is this kind of network structure suitable for a public telecommunications network? explain.

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.

When using a public computer or network, you should always

Which type of file can be used to import data into a spreadsheet?