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SMTP
SMTP stands for Simple Mail Transfer Protocol and used to sending email messages between different email servers. SMTP is reliable and efficient way to transfer email. Today mostly email systems used SMTP to transfer their email on the Internet and t...
OSI LAYERS MODEL
OSI stands for Open System Interconnection. OSI model is also known as OSI reference model. It is used for designing network architecture. It was designed by the International Standard Organization to provide a logical framework for how data communic...
What is Fiber Optic Cable?
In twisted-pair cable and coaxial cable, data is transmitted in the form of electric frequencies. So copper wire has to be protected from water and electromagnetic waves. In fiber optic cable, these types of problems are not occurred. ...
VPN (Virtual Private Network)
A Virtual Private Network is a method or technique to connecting your private network using public network (Internet) with privacy, security through encryption and others security measures. Using VPN you can communicate between two different location...
Protocols
Protocols are set of rules and procedures for communicating. There are many protocols are used but some are commonly used protocols. They are: TCP/IP NetBEUI DECnet X.25 IPX/SPX and AppleTalk But the most important protocol is TCP/IP. ...
ISDN (Integrated Services Digital Network)
ISDN stands for Integrated Services Digital Network. It is a set of standards used to digital transmission of voice and data over already existing telephone line. The ISDN uses the multiplexing technique to carry three or more data signals at once th...

