Since a child class inherits the members of its parent class and adds some of its own members, we say that the child class __________ the parent class.

_____ is a protocol used to share files between a Mac OSX and a Windows 8 computer

Fill in the blank(s) with correct word

Search engines use_________, which are programs that run automated tasks on the Internet, to traverse the web in search of the keywords entered by users.?

Fill in the blank(s) with the appropriate word(s).