Spam - unnecessary or unprecedented emails
Answer:
Operating systems now use networks to make peer-to-peer connections and also connections to servers for access to file systems and print servers. The three most widely used operating systems are MS-DOS, Microsoft Windows and UNIX.
Explanation:
BIOS stands for basic input and output system. It is a program used during the start-up (or booting process) of a computer or device. Hope this helps! :)
