Computer Protocols- TCP/IP, POP, SMTP, HTTP, FTP and More. In order for computers to communicate with one another, standard methods of information transfer and processing have been devised. These are referred to as protocols and some of the more common ones such as TCP, IP, UDP, POP, SMTP, HTTP, and FTP are discussed here.
One of the possible uses for this function is as a hash key. See the notes at the beginning of this section about storing hash values efficiently. You can also use SHA1() as a cryptographic function for storing passwords. SHA() is synonymous with SHA1() .
Whatâs the purpose of the scroll lock key? What does scroll lock do? With modern windowing operating systems we donât need the scroll lock or scrlk key very often, but it solved a very real problem in the days of DOS. The scrlk key is an abbreviation for scroll lock. Some keyboards abbreviate it even further. I one keyboard that just says âscrâ on that key. However your keyboard abbreviates it, itâs almost always the key in between the print screen and pause keys.