Chapter 7: Stack and Heap Memory Management

1. Last In First Out.
2. The stack pointer, ESP.
3. Source address, destination address. 
4. False; jnz causes execution to jump if the zero flag is not set.
5. Stack frame.
6. False; \x90 is the NOP (no-op).  The question is alluding to \x00.
7. Little-endian is a reference to byte order; the least significant bits (the "little end") go first. It is the standard of IA-32 architectures.