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() .
Encapsulating data and methods not only ensures that they don't clutter up the rest of your code, it also ensures that the rest of your code doesn't interfere with them. You can use access modifiers to set the allowed access to not only classes, but also to all members of those classes. Here are the available access modifiers: The. keyword gives a type or type member public access, the most permissive access level. There are no restrictions on accessing public members.