Ethics

Question 1

Define computer ethics

Answer 1

A set of principles set out to regulate the use of computers

Question 2

What are the forms of security protocol

Answer 2

Secure socket layer

Transport layer security

Question 3

Outline operation of ssl

Answer 3

To establish an encrypted link between browser and server
A security protocol that encrypts data
Uses digital certificates
Browser requests identification 
Server sends digital security certificate
Browser authenticates it
If authenticate
Connection is established
Encrypted data ready for sending
If not, browser blocks server
Uses public and private keys

Question 4

Outline operation of tls

Answer 4

A security protocol that encrypts data
Handshake layer
Handles encryption keys
Carries out authentication
Record layer
Handles data and allows for communication
Uses include
Vpn, email online shopping, online banking

Question 5

Define encryption

Answer 5

The conversion of regular text to ciphertext to protect data in case it has been hacked
types- asymmetric, symmetric

Question 6

Describe symmetric encryption

Answer 6

Uses 1 key to encrypt and decrypt message
Uses an encryption algorithm
Sender encrypts data using key
Data is sent
Sender sends key
Receiver decrypt data

Question 7

Describe asymmetric encryption

Answer 7

Uses 2 keys (public and private)
Sender uses private key to encrypt data
Private key encrypted using public key which is available to both sender and receiver
Sender sends message
Sender sends encrypted private key
Receiver receives both
Receiver decrypt private key
Receiver decrypts data using it

Question 8

Explain free software in detail

Answer 8

A type of software license
Distributed with source code
Free of charge
Can legally share/copy
Can legally modify code
Can resell code
Is not subject to copyright laws

Question 9

Explain freeware

Answer 9

A type of software license
Free of charge
Distributed without source code
Can legally share/copy
Cannot legally modify code
Cannot resell
Subject to copyright laws

Question 10

Explain shareware

Answer 10

A type of software license
Free trial available 
All features available for free trial
User charged after free trial 
Not distributed with source code
Subject to copyright laws
Should not be resold
Should not be modified