CET 3510

1. Central Processing Unit (CPU) contains three main components. They are: a. ALU, Control Unit, and Registers b. Memory. CPU, and Input/Output c. x86 Intel CPU, Memory, ALU d. Cache memory, Processor, Instructions 2. How many bits are in a word? a. 2 bits b. 16 bits C. 32 bits d. 8 bits 3. Suppose AX holds the hexadecimal value of OxA08F, what is the hexadecimal value for EAX after zero extends AX to EAX? a. FFFFA08F b. 0000A08F c. AFFFA08F d. AAAAA08F 4. Which of the following registers is 64-bit? a. EFLAGS b. RAX c. ESP d. FLAGS 5. Suppose BX holds the hexadecimal value of B8EF, what is the hexadecimal value for EBX after sign extends BX to EBX.? a. FFFFB8EF b. 0000B8EF c. AFFFB8EF d. AAAAB8EF The assembly language instruction CMP EAX, EBX performs a computation of subtraction and updates 80x86's flags register. Which of the follow flags is set in an Intel type CPU if and only if EAX -EBX? 6. a. The sign flag S is set b. The zero flag Z is set c. The overflow flag O is set d. The carry flag C is set