TCP/IP stands for

The third option is the correct answer. TCP/IP stands for Transmission control protocol/Internet Protocol. Its a datalink protocol that is used on the internet. TCP is responsible for data delivery once an IP address has been found. Whereas, IP obtains the address to which the data is sent.

The four layers of the TCP/IP model are

1. Datalink layer(link layer)
2. Internet layer(network layer)
3. Transport layer(Transport layer)
4. Application layer

The option is 3. TCP/IP is a set of networking protocols that allows two or more computers to communicate.

TCP/IP(Transmission control protocol/Internet Protocol) decides how the data will be exchanged over the internet. It is a suite of communication protocols that are used to connect/interconnect network devices on the internet.

TCP/IP model layers are divided into four on the basis of their functionality.

1. Application layer
2. Transport layer
3. Network layer
4. Internet layer

Application layer

The application layer includes the protocols that required to communicate directly with the end-users. Some important protocols in the application layer are

• HTTP (Hypertext Transfer Protocol)
• FTP (File Transfer Protocol)
• SMTP (Simple Mail Transfer Protocol)
• DHCP (Dynamic Host Configuration Protocol)

Network Layer

It handles the physical parts of sending and receiving data using the device driver in the computer, network interface card, Ethernet cable, wireless network, and so on.

Internet layer

It controls the movement of packets around the network.

Transport layer

It ensures the transmission of the correct message or data in proper order.

TCP/IP main points

• It refers to Transmission Control Protocol
• It has 5 layers.
• It does not have very strict boundaries.
• It is more reliable
• uses both presentation and layer session in the application layer itself.
• It does not provide assurance delivery of packets.
• Protocols cannot be replaced easily in the TCP/IP model
• It follows a horizontal approach.
• The network layer only provides connectionless services.

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