Which protocol is used for communication on the internet? A. DNS B. TCP/IP C. SNMP D. DMZ

The correct answer is: B. TCP/IP

TCP/IP is a suite of protocols that is used for communication on the internet. It is a layered protocol, which means that it is made up of a number of different protocols that work together to provide a reliable and efficient way for computers to communicate with each other.

The TCP/IP suite is divided into four layers:

• The application layer is the highest layer and provides services to applications such as web browsers and email clients.
• The transport layer is responsible for reliable delivery of data between applications.
• The internet layer is responsible for routing data between networks.
• The network access layer is responsible for communicating with the physical network.

TCP/IP is a very important protocol because it is the foundation of the internet. Without TCP/IP, the internet would not be possible.

Here is a brief explanation of each option:

• DNS (Domain Name System) is a system that translates human-readable domain names into IP addresses.
• SNMP (Simple Network Management Protocol) is a protocol that is used to manage network devices.
• DMZ (Demilitarized Zone) is a network security zone that is used to protect internal networks from external threats.