CS401 Quiz 1 Set 7

Q1. Registers are normally part of _______________.

1. CPU
2. Hard disk
3. CPU and Cache
4. RAM

Correct answer: CPU

Q2. "mov [bx], ax" moves the two bytes contents of the AX register to the address contained in BX register in the current ________.

1. Extra Segment
2. Code Segment
3. Data Segment
4. Stack Segment

Correct answer: Data Segment

Q3. 8088 is a ___________ processor with its accumulator and all registers of ____________.

1. 16 bit, 16 bits
2. 8 bit, 8 bits
3. 32 bit, 32 bits
4. 16 bit, 32 bits

Correct answer: 16 bit, 16 bits

Q4. Which type of jump(s) cover the whole memory? I. Short II. Near III. Far

1. III
2. I and II
3. I
4. II

Correct answer: III

Q5. Which of the following is an illegal instruction?

1. MOV AX, BX
2. Mov BX, 10
3. MOV AX, [BX+BP]
4. MOV AX, 65

Correct answer: MOV AX, [BX+BP]

Q6. Call instruction changes the values of __________ and __________ registers.

1. IP, DX
2. IP, SP
3. IP, AX
4. IP, AL

Correct answer: IP, SP

Q7. The intent of the processor is carried to the memory for read/write operations through the _________________.

1. control bus
2. both data bus and address bus
3. address bus
4. data bus

Correct answer: control bus

Q8. In ____________________, every bit moves one position to the right, and the bit dropped from the right is inserted at the left. The dropped bit is also copied into the carry flag.

1. Rotate through Carry Left (RCL)
2. Rotate Left (ROL)
3. Rotate Right (ROR)
4. Rotate through Carry Right (RCR)

Correct answer: Rotate Right (ROR)

Q9. Which of the following bit is dropped into the carry flag after the execution of “Shift Logical Right” operation?

1. 1 bit
2. 0 bit
3. Right most bit
4. Left most bit

Correct answer: Right most bit

Q10. Keeping in view the downward compatibility between the two systems, the codes written for the Intel 8088 are ____________ on the Intel 386 processor.

1. control
2. altered
3. invalid
4. valid

Correct answer: valid