Networks Flashcards
What is a Network ?
An arrangement of computers and other devices connected together to share resources
What is meant by LAN (Local Area Network) ?
It is a network that covers a relatively small geographical area
What is meant by WLAN ( Wireless Local Area Network) ?
A local area network in which connected devices use high frequency radio waves to communicate
What is meant by WAN (Wide Area Network) ?
A network that covers a large geographical area. It connects two or more LANs and is usually under collective ownership
What is a client-server network ?
Network that has at least one server to provide services to the client computers
What is a peer-to-peer network ?
Network that doesn’t have any centralised servers. Each computer in the network can act as the client and the computer.
What is a Network Topology ?
It describes how the devices on a network are connected together
Describe the term Interet
A worldwide system of interconnected networks that enables information to be exchanged and shared
What is communication media ?
How data is transmitted between devices on a network
What is Protocol ?
A set of rules that govern how communications on a network should be formatted and what data they should include
What is meant by Eavesdrop ?
Having unauthorised sight of data being sent from one computer to another over a network
What is Bandwidth ?
The amount of data that can be stored on a network in a given period of time
What is a checksum ?
An error detection technique
What is a packet ?
A small quantity of data being sent through a network
What is a web server ?
powerful computer systems which stores web pages and any multimedia that the pages might contain
What is meant by network secrurity ?
Activities designed to protect a network and its data from threats
What is Denial of Service (DoS) ?
An attack on a network that attempts to prevent legitimate users from accessing its services
What is Access Control ?
Determines which users have access to which data and what they are allowed to do with it
Describe hacking
Gaining unauthorised access to a computer system and the data it contains
What is physical security ?
controlling access to critical parts of a network using physical methods
What is Malware ?
Software that is designed to disrupt the use of a computer system
Describe the term USB
Universal Series Bus socket found on most modern computer system
What is a Cyberattack
Any kind of malicious on a network-connected device
What is social engineering
any kind of attack on a computer that exploits how people behave and respond to certain situations
