TERMINOLOGIES

IP Masquerade 

IP masquerade is the name given to one type of network address translation that allows all of the hosts on a private network to use the Internet at the price of a single IP address.
IP Masquerading and network address translation Configuring  IP masquerade

While working on Solaris

x86 refers to larger family of 64-bit and 32-bit x86 compatible products.
x64 points out specific 64-bit information about AMD64 or EM64T systems.

Patches in Solaris
A patch is a piece of software designed to fix problems with, or update a or its supporting data.
Systems running on Solaris OS can be patched or upgraded online, with only a single reboot required to activate changes.

Flash archives 
mirrored images of a system that can be installed on another system of the same architecture. The flash archive can include third-party packages as well as optional Solaris components like Solstice DiskSuite.

GRUB Menu
GRand Unified BootLoader