Q1: The virtual highway around the world to exchange the data.
Ans: Internet backbone
Q2: The tools used to fix the errors in computer system.
Q3: An attempt to locate and save deleted, formatted or lost data in usable form.
Q4: A network serving in different place of the world or the same organization or site that is modeled after the internet.
Q5: Email message you get that you didn’t ask for.
Ans: Junk email / Spam email