Computer unit2 revision internet

What is meant by the term internet service provider?

• Internet service provider is a company that provides access to the internet

What is meant by the term network interface card?

• Network interface card is a component that takes information from the computer and sends it out onto the network

What is meant by the term wifi?

Wireless fidelity uses radio waves to provide wireless high-speed internet

What is meant by the term modem?

• A modem is hardware that allows the computer to send and receive data over a communication cable or link

What is meant by the term router?

A router s hardware that allows two or more networks to be connected

What is meant by the term firewall?

A firewall is a hardware or software that prevents unauthorised access to the system by monitoringa and controlling all the incoming and outgoing network traffics

What is meant by the term pan?

Personal Area Network is a connection of devices for an individual person within a small office or room

GIve two components of pan

• Network interface card

• Interconnection

What is eant by the term lan?

Local Area Network can be used in a sigle room or a building

Give two components of lan

• Network interface card

• Interconnection

What is meant by the term man?

Metropolitian Area Network is used to connect the lans together

Give two components of man

• Network interface card

• Interconnection

What is meant by the term wan

• Wide Area Network is used to connect computers accross the country pr around the world

GIve two components of wan

• Interconnection

• Networ Interface Card

What is meant by the term San?

• Storage area Network can be span over a geographical area and useful for companies

GIve two components of San

• Server

• Cable

• Storage devices

What is meant by the term VPN?

Virtual private network is a private network accessible over a public network

GIve two components of vpn

• Internet connection

• Firewall

GIve the five type topology?

• Bus

• Mesh

• RIng

• Starting

• Tree

GIve two advantages of bus topolgy and disavantages

• Less cable are needed

• Cheap

• If one cable fails the network stops

• If too many computers are connected it becomes slow

GIve two advantages and disavantages of star topology

• Data flows in one direction

• Equal access to all computers

• If the main computer fails the network fails

• DIfficult to troubleshot

GIve two advanges and disavantages of star topology

• Easy add and remove computers

• If one cable fails the other still works

• If main cable fails the network stops

• Uses more cable

GIve two advantages and disavantages of mesh topology

• Very reliable

• If one cable fails it will find another path

• Very expensive

• Difficult to install

Give two advntages and disavantages of tree topology

• Useful for companie

• Easy to expand

• complex to manage

• If main computer fails the network stops

What is meant by the term intranet?

Intranet is a private network accessib only to people of an organisation

What is extranet?

Iextranet is a private network that allows outsiders to communicate with intranet users

What is meant by the term dta backup?

Data backup is the process of making copis of existing data

What is meant by the term Data protection act?

Data protection act is a law to protect personal infromation held electronically

GIve two key features of data protection act

• Any information should be colleced legally

• Any information should be kept secure and safe

What is meant by the term ownership?

Ownership is whne you buy something or created something, you own it endnote for someone else

What is plagiarism?

Plagiarism is a form of stealing anothe person's resources and claim it as one's own

What is meant by the term copyright?

Copyright is a law given to the owner of a work the right of saying how people can use it

GIve two ways to avoid plagiarism

• Use plagiarism checker

• Use quotation mark

GIve two examples of plagiarism checker

• DupliChecker

• Papaerrater