The end of an event or use case is when the system is at rest in a consistent state.

A network architect is designing a remote access solution for mobile workers with laptop computers and will use GPRS technology for over-the-air communications. Because workers access sensitive information, what protection is required to protect GPRS traffic?

a. GPRS’s over-the-air encryption is sufficient and no VPN is needed. b. GPRS’s over-the-air encryption has been compromised and a VPN is needed. c. GPRS has no over-the-air encryption and a VPN is needed. d. GPRS is not suitable for Internet communications and should not be used.

What is the output from the following?

``` >>> a = 3 >>> b = -5 >>> a = b >>> b = 22 >>> x = a * b >>> print x ```