Authentication

Question 1

Iris Recognition - Advantages

Answer 1

• very high accuracy
• short verification time

Question 1

Iris Recognition - Disadvantages

Answer 1

-very expensive to install
-very intrusive
-uses alot of memory

Question 2

Face Recognition - Advantages

Answer 2

• non intrusive
• relatively inexpensive

Question 3

Face Recognition- Disadvantages

Answer 3

-can be affected by lighting

Question 4

Voice recognition- Advantages

Answer 4

-non intrusive
-short verification time
- inexpensive technology

Question 5

Voice recognition- Disadvantages

Answer 5

-a persons voice can easily recorded and used with unauthorized access
-low accuracy
-illness can cause voices to change leading to the method prevailing inefficient

Question 6

Digital certificates

Answer 6

a pair of files on the user’s computer these files ensure security when data is being sent over the internet.

made up of six parts:
-the sender’s email address
-the name of the digital certificate owner
-a serial number
-expiry date
-public key
-digital signature of certificate authority

Question 7

Secure Socket Layer

Answer 7

A type of protocol which ensures that data is sent and received securely over the internet.
-online banking
-online shopping
-sending and receiving emails
-instant messaging

Question 8

Encryption

Answer 8

it is used to protect data in case it has been hacked or accessed illegally, this doesn’t prevent hacking but instead makes the data meaningless.

Question 9

The Process of encryption

Answer 9

encryption uses a secret key, when the key is applied the text becomes unreadable. only if the recipient has the same key the encrypted message will decode.

Question 10

Firewalls

Answer 10

can be a hardware or software, it sits between the user’s computer and the external network. It’s main function is to prevent destructive forces away from the user’s computer, it filters incoming and outgoing network traffic.

Question 11

Tasks carried out by the firewall.

Answer 11

-filters the incoming and outgoing traffic between the user’s computer and the external network.
-checks whether network traffic meets the certain criteria.
-If criteria is not met, the firewall will block the traffic and send out an warning to the user
-criteria’s can be set so that firewalls can prevent access to undesirable sites

Question 12

Two Factor Authentication

Answer 12

is a form of verification which needs two factor of verification to verify who the user is.

Question 13

Ways passwords can be protected.

Answer 13

-create a strong password
-change passwords on a regular basis
-run anti spyware to ensure the password is not being relayed back to someone.