It is the first or lowest layer of the OSI model. It is the layer where the data is either put onto the media or received off the media. The data is in the form of bits. It is responsible for sending bits from one computer to another.

Network Control protocol: It allows users to access and use computers and devices at remote locations and to transmit files between computers.

User Datagram Protocol is connection less unreliable protocol working at the transport layer. It is used in video conferencing applications or computer games.

The full form of SMTP is Simple Mail Transfer Protocol. It is a TCP protocol for mail transport running at the application layer. It is used in sending and receiving E-mail from one computer to another.

It is a hardware device that acts as a gate between two networks. It can translate information between different network data formats.

It is the transfer of files from your own computer to another computer.

It is the layer where the data is segmented and used by the TCP protocol to ensure accurate and reliable data is transferred and provides end-to-end or host-to-host communication services for applications within a layered architecture of network.

Internet Control Message Protocol is used to perform network error reporting and status. It works at the transport layer. It is also useful in IP network management and administration.

It is the process of converting analog signals or information of any form into a digital format that can be understood by the computer.

It is the layer where framing of data takes place. It is the protocol layer in a program that handles the moving of data in and out across a physical link in a network.

It is the third level of the OSI Model. It provides data routing paths for network communication. Data is transferred in the form of packets.

It is the simultaneous transmission of a single message to all nodes on the network.It is usually a MAC address consisting of all F's. The broadcast address for a specific network includes all the ones in the host portion of the IP address.

Transport control protocol is a connection oriented reliable protocol working at the transport layer. It is the main protocol in TCP/IP networks and enables two hosts to establish a connection and exchange streams of data.

Link Control Protocol: It is responsible for setting up a link between two computers over a circuit-switched telephone connection, and for resolving any issues of authentication.

It is a device that enables a computer to transmit data through telephone or other communication lines. Modem converts its digital signal into analog signals. It is used in modulation and demodulation.