Keywords 9 - Security

Question 1

Computer security

Answer 1

The protection of computers from unauthorised access and the protection of data from loss

Question 2

Server

Answer 2

A computer that handles requests from other computers

Question 3

Request

Answer 3

A communication that asks for data to be transferred

Question 4

Physical security

Answer 4

Security which physically prevents access to a computer

Question 5

Authentication

Answer 5

Security which prevents access to a computer even if the user has physical access

Question 6

Anti-virus software

Answer 6

Software which finds and removes viruses from a computer by scanning it

Question 7

Encryption

Answer 7

A method of modifying data to make it difficult to understand if intercepted

Question 8

Key

Answer 8

Information that describes how a message is encrypted or decrypted

Question 9

SSL (Secure Socket Layer)

Answer 9

A protocol (set of rules) that allows secure communication between computers

Question 10

TLS (Transport Layer Security)

Answer 10

A recent, more secure version of SSL (Secure Socket Layer), which allows secure communication between computers

Question 11

Malware

Answer 11

Software designed to disrupt or modify a computer system and its data

Question 12

Virus

Answer 12

Self-replicating software that causes data loss by deleting or corrupting data

Question 13

Worm

Answer 13

Self-replicating software that fills a computer’s memory, causing it to slow or stop

Question 14

Trojan Horse

Answer 14

A program disguised as another program that works like a virus, deleting or corrupting data

Question 15

Spyware

Answer 15

Software to collect personal and sensitive data and transmit this to the spyware’s authors

Question 16

Phishing

Answer 16

Asking for data using an email that looks like it comes from a trusted source

Question 17

Pharming

Answer 17

Using emails to trick a user into visiting a fake website and giving away personal or sensitive data

Question 18

DoS attack (Denial of Service)

Answer 18

Preventing access to a server through sending a large number of requests from one computer at the same time, overwhelming the server

Question 19

DDoS attack (Distributed Denial of Service)

Answer 19

Preventing access to a server through sending a large number of requests from many computers at the same time, overwhelming the server

Question 20

Biometrics

Answer 20

Use of physical characteristics as a means of identification on a computer (e.g. eye or fingerprint recognition)

Question 21

Firewall

Answer 21

A security technology (hardware or software) that monitoring incoming and outgoing traffic, blocking traffic as needed

Question 22

Proxy server

Answer 22

Prevents direct access to a server by directing traffic via an intermediary (proxy) server

Question 23

Symmetric encryption

Answer 23

Encryption which uses THE SAME KEY to encrypt and decrypt data

Question 24

Asymmetric encryption

Answer 24

Encryption which uses DIFFERENT KEYS (public and private) to encrypt and decrypt data