1. A proxy loop occurs when a proxy repeatedly connects to itself, causing a recursive loop. The outcome can only end in disaster, or at least running out of available resources.

1. Just ask those who have tried to parse HTML for errant script code how difficult that task can be without a strict format.

1. Apple moved to the x86 architecture in 2006. Prior to that, Apple used the PowerPC architecture. PCs, on the other hand, have always been based on x86 architecture.

2. This isn’t completely accurate: many network cards can perform some processing in hardware.