Transport layer This is the fourth layer of the OSI model. The data unit at this layer is known as segment. The network layer deals with sou...Read More
Network Layer This is the third layer of the OSI model. The data unit at this layer is known as packet. There is no need of the network laye...Read More
Data link layer : Data link layer is the second layer of the OSI model. It handles data transfer between network and physical layers. Data u...Read More
Physical layer is the first or the bottom most layer of the OSI model. This layer is used to establish or terminate a connection to a commun...Read More
E-mail client is a program used to manage, send and receive e-mails ,organize meetings, arrange appointments and keep a contact list. Micros...Read More