Computer Network Revision

TCP is responsible for establishing and maintaining a connection between two devices on a network, ensuring that data packets are delivered in the correct order and without errors.

SMTP

The purpose of DNS is to translate domain names into IP addresses.

TCP is connection-oriented and provides reliable data delivery, while UDP is connectionless and does not guarantee delivery.

The role of a router in a computer network is to forward data packets between different networks.

The OSI model is significant in networking as it provides a framework for understanding how different networking protocols and technologies interact, and it helps in standardizing communication protocols and allows for interoperability between different network devices and systems.

The difference is that half-duplex allows for transmission in both directions but not at the same time, while full-duplex allows for simultaneous transmission in both directions.

The purpose of HTTP in internet technologies is to facilitate the transfer of hypertext and other data between a client and a server on the World Wide Web.

The function of a firewall in a computer network is to monitor and control incoming and outgoing network traffic based on predetermined security rules, acting as a barrier between trusted and untrusted networks.

A hub operates at the physical layer and broadcasts data to all devices on the network, while a switch operates at the data link layer and forwards data only to the intended recipient.