You are in the process of creating a new application.
This new application has to be able to read all data from a text file.
What should you do?（）

You are currently in the process of creating an application that reads binary information from a file.
You need to ensure that the only the first kilobyte of data is retrieved.
What should you do?（）

You have recently completed the creation of a new application.
Certkiller .com requires you to ensure that this new application creates a file that contains an array of bytes.
What should you do?（）

Certkiller .com has asked you to create a file management application to monitor the hosts file.
Certkiller .com has instructed you to change the hosts file if it has been changed.
You, therefore, need to display the size and whether the hosts file is set to read-only.
What should you do?（）