Answer the following questions about Patterson and Hennessy, Chapter 2. You only need to turn in those that have a point count assigned.

1. (1 point) Briefly describe the fields for each of the MIPS instruction coding types.
   1. R-type
   2. I-type
   3. J-type
2. (1 point) Which instruction coding type is used for each of the following:
   1. register arithmetic instructions
   2. immediate operand arithmetic instructions
   3. load and store instructions
   4. conditional branch instructions
   5. J and JAL instructions
   6. JR and JALR instructions
3. (1 point) What would you do with arithmetic-logic unit (ALU) in a load or store instruction?
4. Suppose a processor uses special circuitry outside the ALU for all new program counter (PC) value computations. What would you do with the ALU in a conditional branch instruction?
5. (1 point) What does a scanner (lexical analyzer) do?
6. How do compiler symbol tables differ from assembler symbol tables?
7. (1 point) What is just-in-time (JIT) compilation?
8. (1 point) What is the most important benefit of compiling into the machine language of a virtual machine?