What is the purpose of a firewall?
To scan a file system for viruses
To store recently visited websites
To filter packets as they are sent/received between networks
Firewalls make use of rules that will consider which of the following?
The type of computer and amount of available RAM
IP addresses, port numbers and protocols
The type of software installed for word processing purposes
Firewalls are used to protect against which of the following?
Slow system start-up due to lots of programs loading at start up
Unauthorised access to a system
Energy surges
What process involves deliberately scrambling data before it is sent across a network?
Keylogging
Encryption
Firewall
Which of the following is not part of the theory associated with encryption?
Files copy themselves and attach to other files before repeating the process
The simple key is kept secure by using public and private keys during transmission of data
Only the correct combination of public and private key will allow access to the simple key