Key Area 2.5 - Networks And Security

Question 1

What is a LAN

Answer 1

Local Area Networking

A small network in a room, floor or building such as a school or home network

Question 2

What is a WAN

Answer 2

Wide Area Network

A large network that is spread across countries and companies such as Argos

Question 3

What is wireless networking

Answer 3

They use radio waves, satellites or microwaves to transmit data. There must be a transmitter on each machine and a central device such as a router

Easy to install
Computer can be moved
No cables required
Vulnerable to hackers
Complicated to set up

Question 4

What is wired networking

Answer 4

Computer connected by cables such as CAT 5 or fibre optic

Faster connection
Easy to secure and connect
Less risk of hackers
Wires running across floors
Incomparable with new or smaller devices

Question 5

What is the Internet

Answer 5

A global system of interconnected computer networks
Composed of web pages stored on other devices and servers
Connected by hyperlinks

Question 6

What is the cloud

Answer 6

Gives users the ability to rent equipment, software, storage facilities and access to the Internet on a pay as you go basis

Question 7

What is a peer to peer network

Answer 7

A network in which the computers are managed independently of each other and have an equal status. They share the same files and peripherals

Question 8

What is a client/server network

Answer 8

A network composed of a client user. A server is a computer that controls a resource that makes it available in the fluent network such as a data file and peripherals

Question 9

What is a worm

Answer 9

A program that makes copies of itself spreading through the system to damage it

Question 10

What is a Trojan

Answer 10

A program that tricks you into running it and messes with the system

Question 11

What is a virus

Answer 11

A program that makes copies of itself, attaches itself to installed programs and damages the computer

Question 12

What is a hacker

Answer 12

A person who breaks into a computer system to steak or corrupt data

Question 13

What is spyware

Answer 13

Programs that gather information about you using the computer

Question 14

What is a key logger

Answer 14

A program designed to track and monitor the users keystrokes

Question 15

What is online fraud

Answer 15

The use of the Internet to commit crimes such as identity theft

Question 16

What is fishing

Answer 16

An attempt to get your personal details by pretending to be a charity or site asking for details via email or email links

Question 17

What is a DOS attack

Answer 17

Denial of Service Attack
Attacks that consume so many network resource such as processors or memory so that there are none left for legitimate users
Attacks on a specific network resource such as disabling a server
Flooding the network with useless traffic

Question 18

List some security precautions

Answer 18

Security suites
Antivirus software
Biometrics
Encryption
Firewall
Passwords

Question 19

What is a stand alone computer

Answer 19

Computers that can be used on their own without being connected to a network