Unit 1 and 2 Revision

Unit 1 and 2 Revision

1. NETWORKS

   • WAN
     • A wireless area network is networks connected over a large geographical area
   • WPAN
     • A wireless personal area network is a computer network for interconnecting devices centered on an individual person's workspace
   • LAN
     • A local area network is devices connected over small geographical ares

2. CONNECTION TYPES

   • Bluetooth
     • Bluetooth is a wireless connection type that allows you to connect to 7 peripherals at a time over one device
   • WIFI
     • The term WiFi stands for Wireless Fidelity, but really just means wireless internet
   • GPRS
     • General Packet Radio Service is a packet oriented mobile data standard on the 2G and 3G cellular communication network's global system for mobile communications
   • ETHERNET
     • Ethernet is a family of computer networking technologies commonly used in local area networks

3. NETWORK HARDWARE

   • Router
     • A router is a networking device that forwards data packets between computer networks
   • Modem
     • a hardware device that converts data into a format suitable for a transmission medium
   • Server
     • a server is a computer program or a device that provides functionality for other programs or devices

4. NETWORK THREATS

   • Phishing
     • Scamming but online
   • Hackers
     • A security hacker is someone who explores methods for breaching defenses and exploiting weaknesses in a computer system or network
   • Malware
     • any software intentionally designed to cause damage to a computer, server