data integrity Flashcards
what causes data loss
accidental deletion
malicious virus
hardware malfunction
software malfunction
how to reduce data loss
set the data to read only.
use correct shut down procedures
what to decide for backups for data loss
what info to backup, how often, where to keep the backup
how do firewalls work
- they prevent unauthorized access
- it acts as a filter for incoming/outgoing data
- checks that the data meets criteria
- logs incoming and outgoing criteria
- blocks access to specified IP address
how do anti-virus work
they compare the virus signature against a database of known signatures
what do proxy servers do (their job)
- keeps user IP address secret
- prevents direct access to a web server
- filters traffic
- speeds up traffic using cache
- helps prevent hacking of a web server
what are some ways you could keep data safe
- encrypt the data
- password protection
- virus checking software
what are the two types of on screen security methods
on screen keypad, drop down boxes
what is an on screen keypad
they are 8 digit code which the user has to use an on screen keypad.
what do on screen keypads prevent
they prevent spyware/keylogging as there are no keypresses. Numbers on the keyboard is made random as well
what do drop down boxes prevent
this stops key presses from being monitored
boxes can be placed in a different order everytime
what are two different types of passwords that can be used
text (not included in this flashcard deck as its simple logic) , biometric
what is a biometric password
scanned physical measurement that is compared to the stored physical measurement
(eg. finger print, face scan)
data will be converted to digital to be compared
