Answer following multiple choice questions

1.ISA stands for _________ and is responsible for what?

.a International Set of Abstractions Its responsible for allocating memory from programmers

b. Instruction Set Architecture Its responsible for implementing how our software commands our hardware.

c. Instruction Set Architecture Its responsible for the OS

d. International Set of Abstractions Its responsible for dealing with registers, memory acces, I/O, and so on.

2. Why is Moore's law hitting a wall in recent years?

a. Its becoming increasingly too costly to continue adding more transistors to a single chip.

b. Because they are running out of new ways to innovate.

c. None of these

d. Because its reaching limitations imposed by the law of thermodynamics and quantum physics.