Network

1. Types

1.1. LAN

1.1.1. A local area network is a network that connects devices in a small geographic area like an office or a building.

1.2. WAN

1.2.1. A wide area network is a network that connects devices over a larger geographic area like cities, countries, or continents.

1.3. WLAN

1.3.1. A wireless local area network is a network that uses wireless signals instead of cables to connect devices in a small geographic area.

1.4. MAN

1.4.1. A metropolitan area network is a network that connects devices in a metropolitan area like a city or a town.

1.5. Internet

1.5.1. The internet is a global network of networks that connects billions of devices and allows people to share information and communicate.

1.6. Intranet

1.6.1. An intranet is a private network that is used within an organization to share information and resources.

2. Network Components

2.1. Router

2.1.1. A router is a network device that forwards data packets between computer networks.

2.2. NIC

2.2.1. A network interface card is a hardware component that connects a computer to a network.

2.3. Modem

2.3.1. A modem is a device that converts digital signals to analog signals and vice versa.

2.4. Switch

2.4.1. A network switch is a device that connects devices in a local area network and forwards data packets between them.

2.5. Hub

2.5.1. A network hub is a device that connects devices in a local area network and forwards data packets between them.

2.6. Cables

2.6.1. Cables are physical media used to connect devices in a computer network.

3. Network Protocols

3.1. FTP

3.1.1. File Transfer Protocol is a network protocol used to transfer files between computers on a network.

3.2. TCP/IP

3.2.1. Transmission Control Protocol/Internet Protocol is a suite of communication protocols used for connecting devices on the internet.

3.3. HTTP

3.3.1. Hypertext Transfer Protocol is a network protocol used to transmit and receive data over the World Wide Web.

3.4. HTTPS

3.4.1. Hypertext Transfer Protocol Secure is a secure version of HTTP.

4. Network security

4.1. Methods of securing

4.1.1. Encryption

4.1.1.1. The process of converting plain text into a code to prevent unauthorized access to sensitive information.

4.1.2. Firewall

4.1.2.1. A security device that monitors and controls incoming and outgoing network traffic.

4.1.3. Access Control

4.1.3.1. The process of managing and restricting access to a network

4.2. Risks and threats

4.2.1. Hacking

4.2.1.1. Unauthorized access to a network or computer system with malicious intent.

4.2.2. Virus

4.2.2.1. A type of malicious software that replicates itself and spreads to other computers.

4.2.3. Malware

4.2.3.1. Malicious software that is designed to cause harm to a computer system, network, or device.

4.2.4. Phishing

4.2.4.1. A form of online fraud where attackers trick individuals into providing sensitive information.