Computer Systems (Security Precautions) Flashcards
1
Q
What is data usually split into before it is sent across a network?
A
Packets
eg. an image file is not sent as one single file but instead a separate packets which are used to assemble an image file once they are recieved
2
Q
What do firewalls do?
A
Ensure that data packets meet specific criteria before entering a network
Deny unauthorised access
3
Q
What is Encryption?
A
Encryption is the method of scrambling data up in order to stop any unauthorised person(s) from reading it
4
Q
When using encryption, what is it pivotal to ensure?
A
Make sure that the sender and receiver pf the encrypted data are following the same code or key
5
Q
What are firewall rules made from?
A
Port Number
Protocols
Sender IP address
Receiver IP address
