1. Consider the hexadecimal value 0x12345678. A big-endian machine stores the hexadecimal value____ at the lowest address of the 4 memory bytes.
   1. 78
   2. 12

2. LOAD and STORE instructions require a single memory address operand.
   1. True
   2. False

3. The two kinds of main memory are _________.
   1. random access memory (RAM) and read-write-memory (RWM)
   2. random access memory (RAM) and read-only-memory (ROM)
   3. read-write memory (RWM) and read-only-memory (ROM)

4. The two kinds of RAM memory are _________.
   1. TRAM/LRAM
   2. DRAM/LRAM
   3. DRAM/SRAM

5. Most CPUs contain high-speed memory called __________ memory.
   1. ROM
   2. cache
   3. RAM