Computer networks

Computer Networks

Computer networks are systems that allow different devices, such as computers, servers and storage devices, to communicate via physical or wireless connections.

Network topology

Network topology refers to the way devices are interconnected in a network. There are different types of topologies, such as star, ring, bus and mesh.

Network protocols

Network protocols are sets of rules and procedures that enable efficient communication between devices on a network. Examples of protocols include TCP/IP, HTTP and FTP.

Router

A router is a device responsible for routing data between different networks. It acts as a connection point between the local network and the internet, allowing information to flow through.

Switch

A switch is a device that acts as a connection hub for devices on a local network. It directs data only to the target device, increasing communication efficiency.

Firewall

A firewall is a security system that monitors and controls data traffic between networks. It helps protect the network from external threats, such as hacker attacks and malware.

IP address

The IP address is a unique identifier assigned to each device on a network. It allows devices to communicate with each other and to be identified on the Internet.

VPN

A VPN (Virtual Private Network) is a virtual private network that allows devices to connect securely via a public network, such as the internet. It guarantees the privacy and security of the data transmitted.

LAN and WAN

LAN (Local Area Network) is a computer network limited to a specific geographical area, such as an office or a home. A WAN (Wide Area Network), on the other hand, covers a larger geographical area, such as a city or a country.

Cloud Computing

Cloud computing is a cloud computing model that allows remote access to computing resources, such as servers, storage and applications, via the Internet. It offers companies scalability and flexibility.