The real answer is: No, it's not possible there are no known Mac OS X viruses in the wild at this writing, so the likelihood of getting one is zero.
Yes, just like any other computer Mac OS X can get infected with a virus, albeit not as often as a Windows computer, as there is a much smaller percentage of Macs to Windows.
It is possible but there has never been a real world virus attack the Mac OSx.
There are no viruses affecting Mac OS X.
I have been running my iMac for over 5 years with no anti-virus or anti-spyware software installed. I have had not one infection. You can install a free anti-virus software if you wish but as there has never been even one virus infection of OSx in the real world, you have little to worry about. You can get spyware if you are not wise but you have little chance of a virus.
Not unless you are running Windows on your Mac. You do not need anti-virus software on your Mac slowing it down. There has never been a real world virus infect the Mac OSx. There have been a handful of malwares infect a Mac but if you are safe and smart they will not infect your Mac. Been using an iMac for 4 years without one infection and I run no security software.
No, you can only get that discount on a new iMac not a refurbished iMac.
The original iMac was the G3 which came out in (1998). It was followed by the G4 (2002), then the G5 (2004), then the Intel iMac plastic version (2006). The 5th iMac was the aluminum iMac which came out in (August 2007), followed by the iMac Aluminum Unibody (2009). The newest iMac is simply called 2012 iMac and it came out on November 30, 2012.
There is no "iMac Air".
An iMac is a computer, but a computer is not necessarily an iMac, so they are not the same thing.
No
The iMac
The original iMac was created in 1998.
I do not have a 24" iMac. I have a 20" iMac. Apple no longer sells the 24" iMac. If you will click the Apple logo on the top left of your screen and then click About This Mac then More Info you can find the answer.
The iMac was invented and went on sale in 1998. The iMac as it looks today was introduced in 2006.