Networks & Internet

• Personal Area Network is a network connecting a user's devices such as their smartphone, tablet and laptop.
• A local Area Network is a network within a building, office , school or campus usually owned by a single organisation.
• A Wide Area Network is a network that covers a large geographical area and consists of many LAN's.
• A LAN is a network in a single location.
• Twisted-Pair Cable consists of two insulated strands of copper wire twisted around each other.
• Unshielded Twisted Pair(UTP) indicates that it is a Twisted Pair(TP) cable with no metallic shielding around the copper wires.
• Shielded Twisted pair means that the copper wires are enclosed in a shield that removes the corrupting EMI.
• Electro-magnetic Interference occurs when when other nearby signals travelling over copper wire, such as machinery, corrupt the signals travelling over the same wire.
• Fibre Optic Cable is a network cable that contains extremely thin tubes of glass fibres inside an insulated casing.
• A Network Topology refers to the layout of the devices in a given network.
• An IP address is a numerical label assigned to each device connected to a computer network.
• A client-server network means that there is a dedicated computer called a server that controls all the aspects of the network.
• A Wireless LAN is the equivalent of a wired LAN, without the wires.
• Wi-Fi is the nickname for Wireless Fidelity and is basically the wireless LAN technology.
• A Wireless Access Point provides wireless access to a cabled network.
• A hotspot is a site that offers Internet access over a wireless local area network with the use of a router to link to an ISP.
• Bluetooth is a wireless technology standard for sending data over short distances. It is wireless and inexpensive.
• Near Field Communication provides wireless connection between two devices within close proximity. it is most commonly used in constactless payment systems.
• Satellite Internet is a great way of providing internet service to rural areas. you will need a dish antenna, satellite modem and a subscription plan.
• A Virtual Private Network(VPN) connects remote users to a private internal network using the Internet.
• A Network consists of the following basic components: Hardware, Network Software and a Communication method
• A Workstation is a desktop computer connected to a network.
• A Client, which is a broader term, refers generally to computing devices that can interact with the network and use the network resources.
• A File Server is a powerful computer that provides shared resources, such as files, email and internet facilities.
• A Switch is a device used to connect computers in a network with cables so that communication can occur between computers.
• A large network will have many switches connecting all the computers in the network.
• Network Software is software that controls all the communication and security in a network.
• A good password will include the following: at least 8 characters; upper and lowercase letters; use of wildcards; numbers and symbols.
• Spyware refers to software that tries to monitor and track the way you use your computer, and then to report this information to a 3rd party.
• Adware is "free" software that is not really free.
• Adware is ad sponsored software that is installed on your computer without your knowledge.
• Fixed Internet access connections include ADSL and Fibre.
• WiFi is wireless technology that uses radio waves to transmit data.
• A hotspot is a place where a WiFi network has been created so that people can connect to the network.
• WiMAX is an upgrade to WiFi.
• VoIP allows calls over the Internet to anyone around the world.
• FTP(File Transfer Protocol) is the protocol(rule for communication) used for the fast, easy transfer of files between remote computers that have an Internet connection.
• RSS is a technology that automatically provides users with updated content, such as new blog entries, feeds from websites and news.
• Cyber-bullying is the use of electronic communication to harass, threaten, or embarrass another person.
• Cyber-stalking is the act of harassing someone online.